End of the season

別にこのブログは楽しいオハナシばかりを伝える義務も無いのだが、それにしても九月が全て文句たらたらに終始しているのもひどい。とはいうものの遊びに行って浮かれたと言うような写真が在る訳でも無い。ーーーそれではとカメラのメモリ一を見るとしばらく前にサヨナラの埃拶に来た（らしい）友人の写真が出てきた。

(Photo left here was taken by the Mag lens, and the right was taken by rather normal  Sony 30mm Macro F3.5 on A7R camera — I can agree, it’s better to have macro photo in a sharp image.   😀 )

(So, this photo is the proper one = taken by Canon EF 100mm Macro F2.8 with Achromatic Proxer Lens —– since the Moth was outside of a double grazed window, a longer focal lens can see the subject more straight (not in acute angle like 30mm lens) the image would be sharper.)

My blog doesn’t have an obligation to show only positive image though, seeing only the collection of complaint text on September was too bad.         So, at least, I show you the image of a friend who apparently came to my window to say a goodby.   🙂

(And this was the morning sky in this morning at 5:30 by the Omni-focus toy lens on A7R camera)  —– And I can agree a point that we can do a lots in a trivial corner of the life, like in the photography, not such as to fly away to the space.     That’s what I learned.   😀 

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Screen shot by Soft lens (2)

I found this pretty image in the net.  The original was much sharper, rather normal picture.  When I took screen copy using my homemade Mag lens, in order to avoid a moire, I gave a bit of off-focus.  It was a character of the Mag Lens, when it was off focused, the image suddenly increases the aberration thus, the image become nice soft picture.

This image was not as much as off focused like the first picture. (Just enough not to see the screen pixel, hence neither moire)

Then give a bit more off-focus.  —– Isn’t this picture looks more sexy ?  (Shame, I was not the photographer to see the lotus flower in the first place)

I think, now you were convinced to appreciate soft image !

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Instamatic lens Re-try

Since, previous attempt to adopt Kodak Instamatic 304 lens had failed with my mistake, I tried it again while getting one more Instamatic Camera (still, it costed me only another £5 = somebody’s equivalent of a packet of cigaret)   😀

On the previous try, I spoiled the plastic lens, wiping with alcohol.  So, try again.  This half century old camera’s lens consists three lenses. — against to this, today’s many cheap cameras, such as one time use camera was made with just one plastic lens. (my homemade “Koda-Fun lens” etc  got all only one plastic lens. —– But, without having today’s  aspherical optical design, it needed to use three lenses then.  In deed, we came quite far. 

Though, it seems, even with three lens design, quality of the image wasn’t very good.  Somewhat acceptable was only in the center — rest of area was full of coma aberration.  (Is this, really the quality of “Kodak” camera with three lenses ?)

I think, this is something wrong.   😦

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Norman the evil AI

With a commonsense, we think that the word or notion “Scientific” is a synonym to “Rational” and often (quite opportunistically) think its nature IS virtuous, while forgetting a lots of evil science like atomic bomb.  And believe that the ultimate intelligence / AI could solve all the problem of human being.  Though, same to the Great Nature, the Science and the Rationalism is value-free.  To see or use it for good or evil is completely up to us.  Now the Australian is desperately  wanting a stormy rain, even though it has been killing thousand of people in India.  The rain itself was caused and acting completely out of poor human emotion = simply, too much moisture in the air has to come down in any manner.  Even AI wouldn’t change this.  (May give better weather forecast though)  😀

AI or Artificial Intelligence will work based on the all the information and all the ideas or theories known to the human society (that’s what they says).  Then use all those data to generate the answer to the question.  (It’s a famous story, when a Chinese institute asked AI about their country,  the AI answered “You are silly to live in this country. Emigrate to Canada” — Chinese authority shut down the institute.)  So, people think that like the all-known God the AI can give the best and ultimate answer to human —– but it was found to be not necessary true. —– Like a poor human, even AI can not necessary be rational and virtuous = it could be fatally biased by the first information like us misjudge by the wrong first impression.

AI-Powered Psychopath — Report by MIT

We present you Norman, world’s first psychopath AI. Norman is born from the fact that the data that is used to teach a machine learning algorithm can significantly influence its behavior. So when people talk about AI algorithms being biased and unfair, the culprit is often not the algorithm itself, but the biased data that was fed to it. The same method can see very different things in an image, even sick things, if trained on the wrong (or, the right!) data set. Norman suffered from extended exposure to the darkest corners of Reddit, and represents a case study on the dangers of Artificial Intelligence gone wrong when biased data is used in machine learning algorithms.

Norman is an AI that is trained to perform image captioning; a popular deep learning method of generating a textual description of an image. We trained Norman on image captions from an infamous subreddit (the name is redacted due to its graphic content) that is dedicated to document and observe the disturbing reality of death. Then, we compared Norman’s responses with a standard image captioning neural network (trained on MSCOCO dataset) on Rorschach inkblots; a test that is used to detect underlying thought disorders.

Note: Due to the ethical concerns, we only introduced bias in terms of image captions from the subreddit which are later matched with randomly generated inkblots (therefore, no image of a real person dying was utilized in this experiment).

 

Browse what Norman sees, or help Norman to fix himself by taking our survey.

(Or, if you like to read the original article Google it ” norman-ai.mit.ac ” )

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Mug shot (2)

Yet another collection of Mag lens images taken around the Oxford street, London.

Sony A7R’s AWB tend to give brownish adjustment when it has too much blue sky for alien lens.

Strangely this lens is pretty good to create 19thC townscape paintings like image.  May be Sony’s brownish AWB was contributing to this tendency too.

Only a trouble of this Mag lens is, its effect is sometime unpredictable.  😀

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Mug shot (1)

I’m not having any project or mission with my Mag lens still, I’ve been carrying around this lens the most.  Because this one is probably the most typical of my fuzzy homemade lens, together with a good capability of close-up shot (since its used be a magnifier.)  And to explain what and why this lens, often I demonstrate the effect of the lens by taking picture of the person.   Naturally I got a collection of portrait of those people I met in the town.

 

The closer the subject, the better the image quality, still it keeps fuzziness.  So, where ever I click, the product showed my fingerprint. =  That’s I like. —– When people take picture, the result looks all same.  Since, shoot same subject and use more or less the same camera = inevitably the result became same.  That is not a kind I was born to do.  = If I make something, its got to be totally unique, and nobody ever conceived kind (so, it should come to the top of google list, such as “yoshi Zappa” “Art figure St.lucia” etc ) —– (Why people are eager to sell their name is, nothing other than the name makes the difference of the work.) —– it’s hard to be an artist.

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Need lens ?

(Photo above by Gordon Cooper, Church Window, July 2018)

My friend cinematographer Gordon sent me the Photos he took on his holiday in the Cornwall.

While rest of us has been barely surviving in this heatwave, what a lucky guy, Gordon.  He sent photos while saying “Who need the lens” = In deed the photos were taken by the Pinhole which I made for him. —– Yes, exactly like us living without cloths, the camera can take a photo naked = without the lens.  With Pinhole.  That’s true.  I’ve been forgotten the Pinhole —– so, take them out and took some photos around.

(What I don’t like Sony A7R is, their AWB / color balance fluctuates a lot)

I got enough variety of Pinhole = this one was even fuzzier “Concentric Double Density Pinhole” = a smaller Pinhole inside of the other pinhole = create a void inside of yet another void = how can we ?.  (This is a physical and the philosophical problem.   😀 )

The advantage of the Pinhole is, (as long as the camera can co-op) we can take photo without bothering the focus. (= in any distance, image would have the same fuzziness which depend on the size of the hole)

So, the Pinhole convert the image into a constant pattern, almost like a paper cut-out.

And this is the comparison.  Those three photos were not Pinhole but by the Mag lens. Lens will make one focus = other than this distance, the image will be out of focus, which effect gives a feeling of the depth / three dimension.

This Mag lens image has the strong effect of the aberration together with rather messy out of focus bokeh.

On this photo, right amount of out of focus bokeh is giving a nice softness —– if this one was by the Pinhole, it would become rather messy image. = Pinhole is not necessary suit for all the subject. (better suit for bold pattern and that kind of image = in other words, for the some subjects, optical lens would make better image.  Needs lens !

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Vest Pocket image on the 6×7 camera

In the previous post, you might have seen the Vest Pocket lens’ image captured by a 35mm full size digital camera.  Though, the original size of the Vest Pocket camera was 6×9 (43mm x 65mm exact) —– so that, the image only on the cropped center wouldn’t show the full character of this 100 years old lens. —– (Strangely to say, don’t you agree this picture above looks like 100 years, even 200 years old painting ?)  

—– The fact, you must be noted is, 100 years ago then, the user of Vest Pocket camera seeing their picture contact printed on 6×9, card size B/W print.  Today’s reader of this blog can see the picture’s detail / sharpness easily enlarged, though there was no such luxury in old days = people just accept the picture made by the camera (with no focus adjustment).  As long as the picture showed the face looks like your boy, it was a good picture ! 

A funny story was,— there was a Photo-club in Japan,  namely “Vest Pocket camera appreciation club” (Ves-tan Club”/ べス単クラブ — Ves-tan stands, Single lens Vest Pocket ) of which the photo enthusiasts of the photo image made by the Vest Pocket camera was associated together.  And among the members, there was a special practice = use the camera while lens’ front hood which restricts the aperture smaller was removed (— See the previous post =  Lens was originally F6.6 but with the front hood makes it to F11). So, they appreciated the images with soft bokeh by the spherical aberration, the most.  In today’s standard, they might be branded as “Otaku”  (It was almost like a religion, same to prefer the images made by the Canon or Leica lens than the Nikon, saying that the Canon shows the atmosphere / or taste (aji / 味) more, but the Nikon lens pick-up just clinical flaw of the skin.  —– mind you, this was the story of 40, 50 years ago.   😀 )  

I mounted the lens on the Pentax 6×7 body using a camera’s body cap and tested its image character.  (You may say, 6×7 is not 6×9 though, don’t be too fanatic = it wouldn’t kill you anyway) 

(In order to mount the Lens unit to the body cap, an aluminium ring was cut out.  Because the lens has to be very close to the camera body, there was no space to put a focusing mechanism.  So that, the close focused image was made by adding an extension ring. )

So, I took some photos on the 15 years old,  Fuji, Provia  ISO400 film — but exposed as ISO160 as I anticipated the film’s loss of sensitivity in time. — (Since, the lens was set to maximum F-aperture (hood was removed = F6.6) the image was pretty fuzzy on the 6×7 Pentax view finder too = rather difficult to see the definitive focus.)

(Since the 100 years old single grass lens has no coating, image has a lot of halation as well.)

(Fussiness was created by not only its out of focus bokeh but by its aberration too.)

It seems, this photo above is the most peculiar image, unique to this Vest Pocket lens while its hood was removed ( = effectively, F 6.6)  —– in other words, this unique softness is the softness what Japanese Ves-tan Club members appreciated the most. (generally, the softness appeared around the well focused sharp image as “not well focused image” ( = so-called aberration) –—- though, this photo has no sharp core image even on the focused area.   I would only say “Strange ?”   😀

(In here you can see a lot of bokeh by the spherical aberration.= unlike the intentionally created bokeh of Helicoid Lens (A) or (B) kind, Vest Pocket lens’ fussiness looks more natural.)

So the painterly effect of this Vest Pocket lens looks rather subtle and looks natural. And the image has more atmosphere which gives more depth to the image too.  A depth of its image was induced by the emotional resonance (something like = I’ve seen this long time ago), not from the detailed data which will talk to the intellectual brain —– in fact, too much data in the image distract an emotional response, exactly like a noise in the music.

(Which the members of the “Ves-tan Club” most appreciated.)

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Vest Pocket Lens on A7R

On here, the images of Vest Pocket lens from the field test.  (Give a close eyes to this photo and see how the details and rich tones are there ! —– by the way, the image looks a bit more greenish on iPad screen.)

—– If the image looks fuzzy, the lens was fully open (F6.6).  (But mind you, the original Vest Pocket camera’s image was 6×9, therefore we are only seeing its cropped center here.)

(They are the sample)   Left = F6.6 / Right = F11) — Pantograph was fully extended for close up.

(Amazingly sharp image together with nice halation of spherical aberration from the F6.6 Vest Pocket lens ! )

(This photo above, look the cobbles and see their blurred pattern —– but, on the small contact print of card-size image, who would notice it ? )

Well, Vest Pocket lens on the Sony A7R was the camera who took those photos though, behind of those, there were many more minutely blurred photos, seemed to be caused by the wobbly lens structure.  Otherwise, some photos were amazingly sharp, considering that they came from such old single glass lens !  (And it would rise a very serious question, that is, the great effort the manufacturer spending to create 10, 20 elements lenses using ED glass etc, what sort of practical significance was made ? —– of course, unless otherwise, there couldn’t be such as 14mm F1.8 lens or 18mm~400mm Zoom etc etc still, —– ? )     In reality, often, those expensive technical samples were made for demonstration purpose and made only 100 or so to display in their showroom.  In contrast to the millions of  18~55mm plastic kit lens.  Funny fact was, even after the people was made to believe that “the Larger the Better” myth suddenly changed into iPhone camera. —– It indicates that, so-called fine sharp image might be just a formality nobody actually bother. )

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Kodak Vest Pocket Camera

  (Photo left = Vest Pocket A-127 camera.    Photo middle = Insert + Lens unit was pushed out. The round cup on the front panel is the Hood ring removed from the lens front.  Photo right = the half of the Vest Pocket camera was attached on the Sony A7R body)

Probably the most iconic vintage camera must be the Kodak A-127 Vest Pocket Camera.  Among the thousands of cameras, this camera was designed on the almost revolutionary “Cut the corner” philosophy.  On the surface, you might think that this camera was a toy though, actually the camera was 6×9 medium format (43mm x 65mm exact).  In today’s sense, if the camera was a medium format, it could produce quit high-resolution high quality picture —– but, you were wrong.  Virtually all the user of this camera had only seen their picture on a tiny 6×9 size contact print.  Think, how much a name-card size tiny picture could show the details ?  Imagine, to make a picture of photo-booth instant print, how many pixel was needed ?  (I guess, Kodak must have had many consumer test and found “good enough” compromise.)  The size of the picture to carry in a wallet (to show his baby or give his picture) IS 6×9 = card size.  To make 6×9 photo, lens focal length got to be at least 80 mm, and the size of the lens should be about 10mm.  So, on this Vest Pocket camera, the single glass lens was 12mm diameter though, a ring or hood which is restricting the aperture to 7.3mm was placed on front of the lens. (It’s mean, the lens was F6.6 but with the ring, F11. —– with this rather small aperture, a kind of pan-focus = focus-free was created = a bit of out focus may not to be a matter in a small print. ( = hence camera has no focus control) 

So the structure was designed in the same minimalist approach.   The camera consists  1) Outer shell    2) Insert with film gate   3) Lens / Shutter unit and the bellows to connect  Lens unit to Insert and the supporting pantograph   4) Bottom cover —– other than in the Shutter unit, very few screw was used, hence the Insert will be slide out with a simple push  (photo above middle)  Technically, Lens unit and the Insert, connected by the bellows and the pantograph can be seen as the Lens with focusing mechanism = it’s mean, just place the Lens unit / Insert to the front of a digital camera, we can make the pictures of Kodak Vest Pocket Lens, (which I did) — provided,  pantograph should be press-down to the correct point to have an image in focus. (photo right)

The test shot showed rather promising results. (But shoot with an extreme  care ! —– Photo above left = the iris of the lens (without front ring) was fully open = F6.6.    The next, with the front ring which makes F11  (Photo right ) —– F6.6 showed nice softness and when it was stopped down, the image became more solid ! —–  though, the field test showed the other trouble of this optics —– because of not very solid lens support structure, they are pretty susceptive to the vibration =  image get easy to blur = considering the shutter shock made by the small lens shutter (when it was on the Vest Pocket) and the Square shutter in the A7R’s body, the effect seemed to be completely different, especially if there was a funny resonance on the wobbly pantograph  frame. So, I’ll show you the field test shot on the next post.

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