Showing posts with label lens design. Show all posts
Showing posts with label lens design. Show all posts

Thursday, June 20, 2013

Let's Play!

I'm not sure what kind of week is this, as I'm typing this in the middle of the week to be posted on Thursday. However, one problem with the car and the whole week seems to be like a disaster.
I didn't post a thing last week despite the simple material that was available just because I did need some vacation from writing here, and because of the hectic life pace and with such heat that already exceeds 40oC at just 10:00 a.m. sometimes, my mind and brain were completely out of words and order and all what I was thinking of was sleep, sleep and sleep.
The material, however, was not much more than simply some floral shots that were taken around my work place just because I felt the need to work with my camera. I've done as I've done the 50mm challenge  before, when I would pick up my camera and the 50mm lens only and try to train my eyes to find something; the only difference here though is the fact that I've picked up my extension tubes with me.

New Born
Canon EF 50mm + tube, f/11, 30-1sec, ISO400.

Working out without a tripod and extension tubes is certainly not a work for the faint heart! One particular scene that really got my interest and surprise is some tiny blooms in a bud beside my work place, just like the one in New Born. These tiny blooms were actually almost 1 cm in diameter when fully open; and when I saw them first day I was without tubes, and when I visited them next day with the tubes, they were all gone. Most of them died because of the heat and probably the petals flew away with the hot wind. I was lucky to find this one in New Born and I had to dangle my body and holding the camera with one hand while balancing myself with the other against some rail and with the help of the on-camera flash, I've barely managed to get some stability (but not completely stable) at 30-1sec.

Floral Abstract
Canon EF 50mm + tube, f/22, 80-1sec, ISO400.

Generally speaking, one should not try to do macro without a tripod, either using a macro lens or extension tubes. Kids, don't try this at home!
However, sometimes it just happens that you need to try. After all, we do photography for fun here and not for a serious paid job to do, and yet we get somehow extra happy to find one or two shots that went out OK despite the instability of the situation. The situation becomes harder when you have to use high f-number (smaller aperture). Maybe you've noticed that New Born was taken with f/11, and Floral Abstract with f/22 and both were taken at ISO400. This is one of the reasons that I had to use the on-camera flash even though it is not a good source of light specially in macro shots but playing around can do some achievements anyway. The core purpose of the whole thing is to go light and take whatever comes your way, thus no speedlites were taken along. The shutter can be increased a bit though if the object is under the sun as in Floral Abstract which was half lit by the sun. If I'm to take this shot again I would have done it differently, with more close-up approach, and, of course, a tripod!

3D Seeds

One of the interesting findings, if I should call it so, is when I've discovered two images for the core of a sunflower that are close to each other with some change in perspective, which ignited in me directly the desire to make an anaglyph, or a 3D image. The different thing about 3D Seeds is the fact that the two shots were not exactly different in point of view, but they are different little bit in focusing distance. However, some points did coincide (not completely), mainly those in the center of the focus region of course. I'm not sure if this is a good 3D effect in fact but with red-cyan viewing glasses, the composition looks fine and almost no ghosting appears! Maybe a trend for some new studies for 3D composing? Who knows!

Revolving
It had been some time since I did a brainstorming session but some times you don't really need it when some items are available at hand to give you some kind of an idea to do and work with. This is exactly what happened when I've found a small plastic globe that my older sister brought to teach my nephews (from another sister and my brother) about geography for some of their tests.
I thought tabletop photography is, relatively, something easy to do indoors but believe me if I say it is lot harder (and even harder when you have to move your equipments out of home!). Moving stuff from my room to the guest room where I usually shoot is not any easier task, and while there is a table that is good to use for such projects, yet I can't use it because it is in a small place and I can't move it often here and there to do my projects. Thus, all I got is one small place in one corner of the guest room.

Test Shot

My plan was to record the movement of the globe with somewhat a spot light effect from the side or from top, while having a background of some old map (I do have this already on size A2 from previous project, and yet not a good size!). Lot of technical problems were in play here, mainly the question of how to rotate the globe and have a long exposure - and in the same time how to make a coherent exposure with my speedlite. In the beginning, the speedlite has to be set on 2nd shutter sync so that after the blur of the movement is recorded with the long exposure, the speedlite would freeze the motion to get a concrete image of the globe and its map at the END of the exposure. However, long exposure with an extra speedlite light meant possible overexposure, thus many test shots with varying exposure times were taken to make sure that the background is dark but not invisible while the globe is lit with the correct power from the speedlite (with honeycomb grid attached to it); a very delicate matter, and I was going to use some ND filters as well (as in the Test Shot above) but I've abandoned this idea later as the exposure was long enough just by switching off most of the lights in the room, and a double ND would tint the image magenta.

Welt im Wandel
Tamron 70-300mm @109mm, f/4, 4sec, ISO100.

However, despite the test shots, the whole game changed when the question of the motion came into play; mainly, how to do so?
After looking here and there, I've finally arrived to the idea to use my own vacuum cleaner which can be used to jet air from the other end as well as the regular vacuuming. It did achieve something in the beginning but I've realized that pointing the hose is not an easy task and the pointer should be precisely set (as I kept holding the hose with my own hand while putting the camera on timer to take the shot). However, this step rose many other problems, like the movement of the globe itself because of the power of the air (and to solve it I had to use lot of duct-taping skills!), and also, even though there was some blur movement but the freezing motion of the speedlite was dominant and the image appeared stable and not moving, thus probably requiring more exposure time and doing that I might screw the whole mathematics of the experiment! I think it was better to use one dominant light, like a desk lamp, instead of a speedlite here. Anyway, I had to satisfy myself with Welt im Wandel and few other experimental shots.

Revolving Australia
Tamron 70-300mm @109mm, f/4, 4sec, ISO100.

In one of the trial shots I was lucky to get something close to what I had in my mind, but it wasn't created with the effect of a spotlight from a speedlite, but rather by the sluggish movement of the globe as the air flow from the hose was not precise enough, but rotating the globe for a little then it would stop. The movement blur here is not quite strong and it might need more time, but with a speedlite I believe it would all stop completely and no motion blur would be obvious as well.

One point I'd like to mention here is a website that helped me now on keywording my images and I'd love to share it with you. I've mentioned some previous website in some previous post but this one now works better for me with its functionality. It belongs to Microstock, which is another photo stock website (but I didn't make up an account there yet).

It was such a long experimenting but the main part was to set and configure the gear around which consumed most of the time (and power). One of the major problems here as well even before working with the light and motion is the fact that the cable or cord from the camera to the speedlite was quite short and bulky to be dealt with - for this reason I had to keep close to the globe and bear with the reflections on the surface (but I've managed to clone some of it in Welt im Wandel). However, this problem will hopefully vanish soon with a new set of toys!

Let's Play!
What I didn't mention last week is the fact that I've placed a new order for some new stuff. Mainly light gear but one major bulky device that I've been waiting to have (and my hands got all itchy!).

Source: B&H
First item is the Sensei 48-58mm Filter Wrench which should be very useful when I deal with my IR filter and polarizer along with, probably, other attachments. It is probably more useful when attaching the IR filter and the polarizer together, since I had problems with these two before, specially in winter. I think in winter almost everything tends to jam a bit. These two wrenches will be useful in the near future.

Source: B&H
Next item is the Pearstone Onyx 30 Lens Case and this one is mainly to carry my dear Canon EF 15mm fisheye lens; my one and only lens that I usually use when creating panoramas (haven't done those in some long time now!). The cover or cap of this lens is easily removed and it doesn't click over the lens' front, thus I thought such a pocket is a better protection for it.

Source: B&H
Then we come to the fun part with the Rising Standard Pinhole; yes, pinhole. Just like in the old times. This one is specifically made for Canon mounts and I believe you can find it for other type of mounts. From what I gather, the larger the sensor/film, the better for the total sharpness of the image. The f-number for this pinhole is f/222 (but in the instructions manual it's f/223 for APS-C type cameras), so just imagine the depth of field (and the length of the exposure!). I'm still interested in the mathematics involved here though and who knows, I might be able to do my own pinhole measuring to something higher than f/222. Remember that Diameter (of aperture) = focal length / N; and from there we can start on manipulating stuff.

Source: B&H
And then comes the savior! The Vello Universal Duo TTL Off-Camera Flash Cord (33'), and by "(33')" it is meant to be 33 feet, approximately about 10 meters! Unfortunately, I've done the globe experiment above before the arrival of this cable (and till the moment of writing this, I didn't test the cable). This cable would and should push the limits of my speedlites significantly. One question hovers in my mind though: what would be the situation with High-Speed photography? I'm pretty sure there would be some time delay to transfer the signal (we are talking about microseconds here). In High-Speed photography, each single micro- or even nanosecond counts. We shall see about this matter in time.

Source: B&H
Finally, comes the one big toy that I should spend more and more time with. The X-Rite ColorMunki Photo Color Management Solution. Even though I do already have a ColorMunki device to calibrate my monitors (laptops and desktop), yet this device is here is far beyond calibrating monitors only (hence it costs more!). With this, I will be able, hopefully, to calibrate monitors, and make profiles from prints and analyze ambient light or even calibrate a projector! The perfect tool, I would say, for creating showrooms and proper digital darkrooms when needed. I'm thinking of installing this into my (old) desktop and my (new) laptop to make them ready for any task in the future. Just a point here about analyzing the ambient light; it is something important but unfortunately I don't see many people care about this tiny detail, at least in expos here in Kuwait. If you are a photographer and you really care about displaying your photos in printed form in a proper way as you envision them, it is not enough to calibrate your monitor to get the right colors. You have to get profiles for the printing but this is a matter that might be skipped for good in many cases (yet it is good to have profiles for various media). Then we arrive at the ambient light criteria. It is a good thing to know what kind of light and what color temperature the ambient light would be in the place where the photos are to be shown, because with this information, you would be able to examine the effect of such light on the colors of your photos on your (calibrated) monitor before even printing. Thus, you might think of making your photos more yellow-like to balance the extreme blue-colored light in a showroom or vice versa. It is all about taking care of the balance of colors and soft-proofing on your monitor before printing and displaying the photos.

Now with all these loads of new stuff, I think I do need an extra case to keep lot of these stuff and abandon that old small case (which was used for my old Canon 350D!). I'm thinking of getting one of those small traveling cases with wheels to keep my speedlites and related stuff in them. It is about time to organize some stuff (but not my room!).

Bücher
Source: Amazon
In the matter of books, I've finished my Lens Design book but in a fast rhythm. I've realized that such a book can't be read and completely digested without a tutor and without a practical workout. The many mathematical concepts involved are not so weird for me even though they include a high order of complexity, but in most times, many terms there within are familiar to me. However, in mathematics, at least with me, it never works without a practical workout and some tutor to walk step by step along the process. You'd think lot of the concepts here are relatively new but the fact is, most of such mathematical endeavor was developed long in the 18th and 19th centuries! Anyway, after passing through the pages quickly and read some articles, I've decided to look at some of my old books or even look into some books about optics in the library near by. That might help to achieve a better basic understanding for this topic.

Source: Amazon
I've started now reading the last book in the queue line, Handbook For Classical Research, in hope to flavor my mind with some archaeological spice. From the first few pages that I've read (and I didn't delve deep yet!) it seems that the whole book is about the Greco-Roman studies and culture. I was hoping for further expansion but anyway I still do think it is an interesting topic. The good thing about this book is that it is written by a single person, single author, and not scattered among various authors with an article or two for each. Such books with many authors involved are kind of scattered in thoughts and it's hard to keep a chain of thought going through the whole reading session. In linguistics and humanities, I've faced numerous books done in that manner and I have to say, it is kind of a waste of time to read but probably better be kept as a reference material when needed. I'm hoping this new book would give some amusement into my dull brain!

Unsettled Geltani
Maybe I didn't write much thoughts in my notebook about Geltani lately but nevertheless I was active in my mind. Yeah, I'm wondering why do I have a notebook anyway! However, I'm still planning slowly on assigning phonetic values and on the other hand I think I will abandon the newly-created system of possession articles. I think my problem was to create everything in idle and concise manner, but I think a language is more random than concise or systematic. Thus, I've decided to work on another method which might work as: pronoun-subject-suffix. For example, My Cat, would appear as: I-Cat-(suffix here). Development is slow naturally because of my stuffed schedule, and problems!

Finale
Scandinavian Eyes - Frida
Troubles on the home front keeps me busy and alert. I do say "front," yes. Because it seems that way; a game of dominance and reliance. There are moments that I do wish, and do imagine, how my life would be with another form of a family. They say you can't choose your family, but you can pick up your friends. However, under the current circumstances, it seems that I don't have the former, nor the latter. It feels like I'm floating with no support; not physically, nor emotionally. Mom is doing her best to keep me happy and I know it. I can see it in her eyes and actions. However, I'm the one who's supposed to keep her happy. I have a family that I can barely relate to.
Here and there, I'm keeping myself amused with some brush-up jobs with some photos from instagram users. It is something that I used to enjoy doing long before I take photography as a hobby. It might be just the desire to make something beautiful but trust me, if the original photo/person is not beautiful in the first place I would really have hard time creating the "uncreated". I think I do get satisfaction from the gratitude and happiness that those people show when I create some art with their pictures. I'm not a psychologist, but probably I'm projecting my needs outward - something that I've lost in my inner circle is satisfied with deeds to the outer world.
There had been some thoughts about resigning and chasing my own career but such thoughts are still cooking. It bears great responsibilities as well and even stepping into such realm should be done carefully without leaving the main job at once. However, with the current circumstances at work and the great disrespect that I face from the admins who think that my work place is something vain, I'm seriously getting sick of everyone around here and do wish to break free from all these master-slave relations. How, I don't know; but every good meal, needs a proper cooking...





Thursday, June 6, 2013

Şaşırmış...

I can't help but say, it is one weird week that has just passed me by. Despite the fact that I've stopped my fasting, in hope to continue by the beginning of the month of Sha`ban, yet I did feel tired excessively with some weak body and dryness most of time - talk about acting as a sponge.
On the other hand I was able to work with my camera just a little bit. I've made up ideas already from brainstorming my mind with the help of some of the websites I've mentioned in the previous blog post, but not all of these ideas are technically available for the time being, or maybe too much time consuming with my hectic schedule in the meantime. Mom is still taking much of my week, and despite some previous talk from the doctors that the dialysis time might be reduced in the near future, I can't see any of that happening soon. With this load, some problems from home are added. They usually call them Domestic Problems but in my case I'd rather call them a Jungle Survival game by keeping my dignity in this house. I've already started picking Mom to and from the dialysis center (before that I used to pick her from there only) because Mom is not happy to go with my sister in the morning in the traffic jam rush. Thus, she decided to go with me from now on in very early hours in the morning to avoid the high blood pressure that my sister causes her on the way to there.

Die geltanische Sprache
I hope you don't mind the German subtitle for this topic here. I'm not a German speaker myself but probably this is how I would write the adjective geltanische if I was German!
However, during this week I didn't put much thoughts on paper with Geltani, but mostly it was some work of thoughts in the mind and having mental notes about some drawings of the characters. In the meantime I'm having problems assigning phonic values for some of the characters. I didn't go through the syllabary system all over again as I've promised myself I would do this week. The major change in the syllabary system is about some characters' drawings and not the phonic values given already.
The language do sound, at the current time, a mix of an Arabic base with an English flavor in terms of general aspects; mainly when it comes to the feminine and masculine cases. However, I do have to work on the phonic values for lot of the combination of characters together and the situation is even more critical when it comes to diphthongs, that is the combinations of 2 vowels, or we might even face cases of more than two!
I'm trying to systemize the combinations of phonetics but I'm not sure yet that this would work. The only thing that would prove the usefulness of such approach is the excessive trial and error, with a pen and paper!

Silhouette
In the past few weeks I was trying hard to take a silhouette shot of my brothers depicting the evening life in a typical weekend here. Yet, despite its simplicity, I had to abandon the idea mainly for the cooperative attitude from the family members (and please note the sarcasm here) and then the unavailability of some suitable background or backdrop to represent the idea of an evening gathering. Majorly, I was trying to use some features in the guests room but this was a bad idea because it did cast a shadow and that complicates the matter further raising the necessity of using two speedlites (or even more) rather than one as I was planning. With more speedlites, then you'd need more light modifiers, and in my case, I don't have plenty of those.

Silhouetted Mother I
Canon EF 50mm, f/11, 250-1sec, ISO200.

Thus, just to keep up with the idea, I've decided to use Mom as a model! Yes, she's more flexible and the idea is simple enough and doesn't need much acting like I had in my mind when I was planning the silhouette shots with my brothers. It is just a profile or an outline of the head. To do this, I've simply placed Mom in front of a green curtain that's already there, and of course I had to use a green gel on my 580EX II speedlite, otherwise the color would get messed up; adding to that a reflector on the speedlite to spread the light to a larger area with a soft approach.

Silhouetted Mother II
Canon EF 50mm, f/18, 250-1sec, ISO200.

I've taken here two shots (close up and further away) just in case (and I was thinking somehow in a marketing venue as such images can fit into the stock sites for specific topics). Communicating with my speedlite, however, had to be done remotely without a cable, which means I'm stuck with the sync speed (250-1
sec). The speed was fine however as the lights in the room were not too strong and not so demanding to be killed out. The only change between the several shots was the aperture and this is how I controlled the intensity of the speedlite reflecting off the curtain. I don't quite remember why I've fixed the ISO to 200, but probably I've forgot it like that from the previous session! The noise level after all is not quite dramatic and was easy to smooth out, specially with such style of images not having so many colors.

Freeze Me!
Few days later after doing the silhouette shots of Mom, I headed to do another shot that I've been thinking of for some time and trust me if I say, I had to force myself and my mood to do so! The sole subject of this experiment was a glass vase brought to me as part of a bouquet by the group when Mom was still in the hospital back in March.

Pouring Down
Tamron 70-300mm @92mm,
f/16, 5000-1sec,
ISO1000.
I have to say that the vase is really seductive for many experiment, but the preparations to do such experiments is really exhaustive to myself, specially when preparing the props. The fact that my older sister wanted this vase too, made me do something, anything, just before the vase is taken away!
I've placed the vase on a table which has a glass surface in the center and placed my 430EXII speedlite below the glass. In typical situation I would actually place the speedlite light on the sides but I just wanted to do this experiment here, specially with the hardships involved because light is refracted through the glass table before reaching the subject. I've placed a white screen as a backdrop and in the beginning I've placed 2 black boards on the side (to emphasize the edges of the glass in a bright scene), but then however I've realized they are not necessary.
If you see the info in Pouring Down, you can see that I've used a telephoto lens (Tamron) while the shutter speed is 5000-1sec; quite faster than the sync speed. Thus, a cable is required to control the speedlite but with a telephoto lens, I need some distance away from the vase. In this case, I've used the Vello cable I have (which extends only 2 meters, hardly) and connected it to the 580EXII to control the 430EXII and enable me to use high shutter speeds above the sync speed. This is in case you were wondering why I did use 430EXII under the table in the first place and not the 580EXII. In the beginning, the master speedlite (580EXII) was turned off and it was set to control the 430EXII only, but then I've decided to turn it out and help me with the front little bit. It did make a little enhancement though and probably not a big deal, but I've kept it on.

There were many shots to test the light first and settle down with a certain type of lighting. I've made some light patterns because of the refraction that would look nice otherwise, except that I needed a plain background in this situation. After all is set, I added some dishes soap inside (you would think it's beer!) and set up the motion trigger. This is my first time to use the motion trigger. I have to say here that it is bulky and not quite the easy-to-handle thing. The motion sensor (with a long cable from the trigger body to the vase) was not easy to be placed to track the motion of water that I was going to pour down. How ironic it was when it triggers my body movement when I was going to the vase, but as I move my hand to pour down the water into the vase the trigger, sometimes, wouldn't respond. After some trial and error, I've finally made something right.

One of the failed trials at 1000-1sec.
Notice the movement blur.
Click to enlarge.
You might think about the high ISO here? Well, as I was trying to pour water down I did capture some amazing water texture and movement, but unfortunately, most of them were blurry. I've realized then that 1000-1sec shutter speed was not enough, and/or the depth of field is not deep enough. For this reason, I've poured down the water out of the vase (which was full after some trials) and filled it again with soap, and then worked again on fixing the light and this time with 2500-1sec shutter speed, but I've changed my mind quickly and made it 5000-1sec to ensure the freeze in motion. If I have more speedlites, I might as well have gone further than that speed! However, because of this change in aperture and shutter speed, I've realized that I must raise the ISO as well. The subject is here is not complicated and I thought that cleaning the noise in post-processing won't be such a hard task to do (specially that the experiment took a place in a cold environment and excessive chromatic sensor noise is unlikely).

Thoughts
After my experiment with the glass vase in Pouring Down, I think I've realized why I used to run away from using flashes or studio equipments in general and loved the free life of an architecture photographer, along side with doing abstracts and landscapes. Setting up a specific set, be it a tabletop or some studio is really an exhaustive process for me and by the time I sit behind the camera I think most of my power is gone already. More over, the fact that in architecture or landscape I deal usually with a light that is already there and all I have to do is control how it looks to my camera - this is quite easily done compared to the completely controlled environments of tabletop photography or studios in general where you have to imagine everything almost and do a lot of test shots before doing the actual work.
There is probably another problem that I have to put up with, but this time it is all inside my mind. This problem revolves around the processes in my mind and how my mind works in general when it comes to space orientation and organization. I'm not sure if this is a serious problem or not, or if it is somehow linked to a psychological problems as well or not, but I do have hard time setting up some configuration from scratch without having any clue about where to begin. Suppose you provide me with an empty room and some pieces of furniture and just ask me to arrange it for you freely - this is something that would be so hard to do from my side because I, simply, can't recognize what freely means in this context. I have to start up with something to build on my hypothesis of the space and how it should be arranged; say for example, how the sun rays get into the room from the window, if there is any, and how I would imagine some furniture pieces against such rays and then try to imagine a specific purpose or relation between the sun rays and the furniture pieces, and then and only then, my mind would start to arrange the objects.
Now, I reflect on such thoughts and how my processing goes with my photography projects and workflow. It seems it is pretty much the same, specially when it comes to tabletop and studio environments. I just can't make up my mind out of a free point in the space. Working with architecture is much easier when all I have to do is frame a previously configured set rather than do the whole thing by myself!

Finale
Source: Amazon
I'm still on reading my Lens Design book which far way too complicated than I thought and it is probably not so practical if I keep reading this without a practical trials or at least some visual aids to help me understand the mathematical formulations inside the book which describe many aspects about the lens (mainly the errors and aberrations aspects).
In the meantime, I've been active for a while on Instagram with all its hassle, but I'm lurking trying to catch photos of people (ahem, females) to edit. I didn't do such activities in a really long time now. Some people might thing that photoshopping or editing the photos is some kind of cheating, specially when it involves fixes. Well, I deal with art. Not all my edits are fixes in fact. Lot of them are simply artistic retouch and somehow a sway from reality at times. I feel the need to do such edits just because it endows my eyes with some beauty that I've been missing for a long time around me. One of the problems though in editing such images is that most of them are taken with phone camera (naturally) and the nature of the color space and the noise level is very questionable and vary significantly. I've seen great faces and great poses, with great facial features (mainly the eyes, I'm fond of those) but unfortunately, the low quality disturbs most of those, second comes the background or the nature of the light in the scene.
There are some ideas of ordering some new toys, but not sure what they will be exactly, but I'm still consulting my budget about this matter. Probably more details in next week's post, hopefully!

Strangely, I've been lately moved around following some foreign music, from Greek, to Uyghur, to Turkish and it keeps on rolling! I think I'm compensating for my inability to have a vacation and travel by listening to foreign music and dream; daydream, that is. Just like how it was in the old days when I was a kid, when my family used to visit only specific places, while I kept dreaming of the big world and couldn't see some of it until I reached 29 years old.
I'm living day to day, without really knowing what will happen the next day or what are my plans. Pressing hard to work my mind on photography projects yet the efforts are humble so far. Makes me ask myself more often, do people still got portions of their feelings, and does anyone out there who would really feel what burden I carry on my shoulders. Most likely, the answer is well-known and no need to state it. Einsamkeit ist ein Killer. Aber mit jemandem nicht versteht zu sein, das ist ein ewiger Folter.

Tatiana