Further modification

As I mentioned on the previous post that the 110 instamatic macro lens needs the helicoid focusing —– I did the work.

Photo right showed the finished work together with 60 mm Extension ring = both Rear lens cap and a camera body cap were fixed to the left over can !

To put a focusing helicoid, the barrel (water can) was cut first (Photo left) The internal diameter of the can happen to be 64.5 mm which was about match to a 58 to 62 mm step-down ring = so, it was connected to a 25 to 55, 58 – 58 mount focusing helicoid from China. Then they were connected to the Nikon Z with 58 to NZ reverse adaptor. (Its mean, to use a 58 mm reverse ring, the lens can be connected to any other camera as well)

Here, everything was conveniently happened to match well. —– in this kind of the work, it is always the luck of “Happen to be” works. When you need, you may find coveniently matching component etc or got pretty good idea etc ( —– If it was not on your case, think about = you might be rued to the God in your life. ) 😀

Photo left = Helicoid was shortest 25 mm, Middle = Helicoid was 55 mm, Right = + 60 mm extension ring

With this modification, the size of the subject could vary from 6.5 mm to 9 mm (x5.5 ~ x4) (with extension ring 5 mm – x7) and the focusing became very easy. = I did Nice job.

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O-M-G — Apple

OMG — the seeds started to germinate inside of fruit !

This photo was taken by a homemade lens called Yashica Macro. https://yoshizen.wordpress.com/2016/05/14/yashica-kyocera-macro-2/

This apple must be rather old — still, not started to rotten = must be sprayed with the strong chemical to make a long shelf-life. Still, the fruit itself has its own internal clock and timed for the moment to come-out.

Of course, the apple was not created to be eaten by a man let alone by Adam. In nature, the fruits will be fallen to the ground and the seeds germinates from its rotten but nutrition rich seeds bed. —– we are only intercepting their process and robbing their opportunity.

If you are “Pro-life” activist, you may plant this seed to a pot to grow an Apple tree —– but sorry Miss Apple, I’m not such tender person (in fact, I had too much trouble before to have too many such pots of plant) I’ll just throw you into a bin. (I’ve been killing too many lives, vegetables, fruits etc etc thrown into my cooking pan etc etc = too late to pretend to become tender hearted hypocrite.)

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Fuzzy Macro for flower

They are the photos made by a homemade lens called NZ-B = It’s a very peculiar lens, = utterly fuzzy though in the certain condition, strangely it shows quite sharp image.

This one may seemed to be taken by any ordinary macro lens though, with a much of amazement, even an annoyance, it was done by the same NZ-B lens on Nikon Z7, AV mode.

In certain extent, this lens would work just like a fuzzy 40 mm F2 lens.

Still, under close look, the image has quite a detail.

Don’t aske me why I didn’t come here a week ago. —– It’s happened as it happened. (That is what the life is.)

When it was far fore-focused, the image became like this = I like this. I think, no other lens ever made the image like this bokeh. And the bokeh image like this only exists photographically = never in the real world.

Hind-focused (photo left) = lens was sunk beyond the infinity position / Focused (middle) / Fore-focused (photo right) = lens helicoid was fully extended = like for a close-up shot.

(Only one exception, the photo above left was taken by the Pentax 110 Auto 24 mm lens)

Quite exotic flower — I have no idea who she is.

Very impressive though, I never seen her anywhere else. — (Is it a kind of Thunbergia ?)

But this one is very common, yet I love this painting like image. (It seemed that the loss of tonal dynamic range was not caused by the softness of the lens but by the brightness adjustment of Picasa and a very bright color = red.)

Still, the same lens can produce prosaically clean photography-like image as well.

The photographer is believing that they are the user of “Photography” though, in reality, the provider of the Photography (= camera maker, photo journalism etc) is using photographer to keep and run the industry and the idea. So that, “Photographer” was made to believe a type of photography which was provided and such stereotypical style “IS” only the photography.

= The belief IS “Photography is to make a faithful copy of the subject” while blindly believing that his own eyes is seeing the true face of the subject. —– In reality, no such certainty ever existed.

And rather fragile looking Scabious —– the lens showed peculiar DOF and the size of back bokeh is gorgeous.

(But have you ever seen such bokeh image in nature ? —– they exists only in the photographic image = they are not real neither your eyes are telling the truth —– So, how can you tell that the photography IS the faithful copy of the real, without knowing your own eyes could not tell what is real.) 😀

(For example, we are not seeing square building, since we got fisheye vision as our eyes are round ball, so that, our brain is reconstructing the image following the stereotype that the building is straight = therefore, the picture of the building has to be square ! —– You see what I mean.)

——- ! ? ? ?

Here a kind of anemone ? —– anyway, the matter is the image. (If you can make a soft image like this using PS I would like to see it !)

I’m not familiar with this flower —– pretty impressive, and it looks even cannivorous. I wouldn’t be surprised if I see the dead bodies of insects laying inside, half digested. (Do you know what IS the truth.)

And suddenly here rather humble looking flower = the color of blue jeans, Indigo came from this plant. (or larger sister of her)

(If I could stop down, the image could have deeper depth of field though this lens has no iris = always fully open F2. But considering the condition as it was fully open F2, the quality of close focused image was amazingly high !)

Then, funny looking chap = the nuts of ceder tree, not a Pokemon still, he looks very very happy today !

The world seems to be pretty peaceful.

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Retrofocus

Y-Mac + Div’lens

Behind the lots of experimental / homemade lenses, I got mountain of diverging lens which came from mountain of discarded lenses. —– Converging lens can be easily used as an image projecting lens in many occasions though, not many use of the diverging lens. I did used it to make Wide-angle Pinhole and for Two element homemade lens which was to extend the focal length of the disposable (one time use) camera lens for 35 mm SLR camera.

The diverging lens was simplly stack to the front of the Yashica macro lens (focus was made by its zooming helicoid) and the size of the image was depend on the distance between the Yashica lens and the diverging lens = if it was made adjustable it will become a zoom lens.

Scavenged homemade lens / Yashica Macro is quite good lens though, it got rather limited use only for the macro shot. — Why macro ? Because its focal length was too short to be used on the 35 mm SLR even on the mirrorless camera = When such lens was mounted on the full-size camera, it was same to the lens was focused to very close. = Close-up or Macro shot.

But the focal length of the lens can be extended by the diverging lens. = So, I tried it with a diverging lens which came from a Nikon Zoom lens = It worked well !

Somewhat similar to the situation of “Twisted lens” we are discovering the “inconvenient truth” of the optics. They may not be a residents of the holly land. (I’m talking about the optical effect — utilising its effect while making precise lens-shifting mechanism etc and make usable / reliable products is far beyond the ordinary man’s capability.)

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Leitz 50 mm-vs-Zeiss 55 mm

Casually I called Leitz Elmarit lens I used on the Nikon Z in the previous post, a homemade though, glass itself was a serious Leitz product. Hence, having a proper optical quality as we expect. —– ? was it ? = was that quality, within a normal standard ?

—– So, I made a comparizon.

This is the test image taken by the Leitz Elmarit P 50 mm F2.8 at F2.8. With the focus peaking. (Photo right was a part enlargement of the centre = the top of the tree) —– the small twig still maintain its detail though, is this fuzziness normal ?

So, to have a close comparizon, Zeiss Sonner FE 55 mm F1.8 lens was mounted to the same Nikon Z7 body and had the test shot on the same tree, same condition. (since Zeiss / Sony lens has a funny habit = keep move the focus, so that, click the shutter when focus was peaked) In the photo right, some leaves on the tree were coloured red = may be an effect of the chromatic aberration. Was it ? Wait a moment = this is not a £1 junk projection lens but a genuine Zeiss / Sony lens costed hundreds of the pounds. (Even though it was made in Thailand)

Then, I gave yet another test = Zeiss Sonner lens was mounted on the Sony A7R body and had exposure of F1.8 and F8. (manual focus) —– F1.8 image (photo above middle) was the sharpest among all the photos in this post. (Though, strangely F8 image = photo right, was soft —– very difficult to make a precise manual focus on this A7R camera)

Since the same Zeiss lens showed no chromatic aberration on the A7R body here, there is a possibility of either (1) Sony has correction program built into their image processor to compensate lens’s own aberration. or (2) The lens’s obstruction = keep moves its focus when the lens was not mounted on the Sony body = moves only a small part of lens, only to destruct the clear image, hence making big chromatic aberration on the Nikon Z body.

Yet those photos here showed very different strory. The photos were taken same as those photos above.

= Zeiss lens on the Sony A7R body. Exposed on F1.8 and F8. —– But here, F1.8 image (photo middle) showed funny chromatic aberration (red leaves)

(This is the puzzle = how those red leaves were created ? The Sony camera and their image processor seemed to hide too many puzzles.)

—– the correction program of Sony Image Processor may be working erratic. (still, how to make only some leaves red on the Nikon Z and on the Sony A7R as well looks too strange = In fact, the culprit mast be the Lens, not the camera, though, how this Zeiss FE lens can put the red color to a selected part of the image ? === this phenomenon needs to be investigated further !

This is a problem of the “Soft controled digital imaging” = it would make a pretty picture though, it may work, may not work like a Beauty App. That why I hate those artificial images. (Still, film photography can create strange phenomena too —– but, as I didn’t have an experience to enlarge a 35 mm color photo to 1.5 m big and examin the details, may be I was not aware )

Here, they are the shot to finish-off this argument (of Red Leaves) made by Zeiss Sonner 55 mm ZE lens. = The lens was tested at F1.8 if it showes chromatic aberration of red and green fringe on the roof pattern. = The result was as you see. (When the lens was fore-focused, the image has green fringe — photo above right)

And I found a very interesting bokeh pattern on the tree behind. The question is, is this the quarity of the lens which says “Sony / Zeiss Sonner” ? ? ? ( 55 mm is not special, neither F1.8 is difficult to design)

So, how about the chromatic aberration of the Nikon 50 mm F1.2 (photo middle) and F2.8 (photo right) —– a lots of red leaves seems to be here too ! = We shouldn’t be surprised. —– Otherwise we need to pay thousands of £ for a lens which shows no aberration on fully opened iris. === Only the question IS, why we need such perfect image ? ? ? (May be the obsession.) = If you want to see the perfect image, come down to the tree and see it close)

The reason why we don’t see such Chromatic aberration everyday, —– (1) We don’t use maximum F-aperture often, except in the very dark situation. And if it was dark, we can’t see such color fringe in the dark details. (2) In those lenses (Zeiss 55 mm, Nikkor 50 mm) when we stop down two or three stops, the aberration would be disappeared = hence we don’t became aware its existence. (3) We don’t enlarge the image to such big size. = so that, in the small print, the color fringe (even if it’s there) would be buried in the details. (If you are seeing the enlarged tree top photos in this post on a PC screen, it is the equivalent of seeing a 36×24 mm size photo enlarged to the 120 cm x 80 cm (43″x32″) and giving a close look.

The aberration is an optical phenomena, when the light was not converged into the focal point and spread to the surroundings as well, make the image fuzzy. Among the cause of such problem, if it was coused by the way how the light was bend differently by its color (= wave length) it was called Chromatic Aberration. As you might remember to see the rainbow 7 colors made by a prisome, when the light go through the glass they bend according to the wave length (= color). To solve this problem, converging lens which bend the red light more to outward and the diverging lens which bend the blue light more to outward were combined together to conpensate each other to the light concentrate to the same focal point (so to make a sharp picture). —– While making the light bend inward and outward, still make them to converge to the same focal point, optical designer use the fancy technique and special glass etc etc = that’s why good lens is using 10 or more glasses inside of one lens. (= making such lens hugely expensive) —– Sigh 😀

—– Still, it is rather rare to see such prominent Chromatic Aberration like the red leaves here, —– in most of the case, the fringe color appeared only on the edge of the details and make the picture just a bit soft. (Hence the most of the people doesn’t became aware such things ever existed in his lens. )

And in this point, why the Leitz projection lens I’ve talked on the begining of this post showed such character become clear, = the projection lens showes the 35 mm slide image hugely enlarged therefore the chromatic aberration would become quite visible yet, a bit soft image wouldn’t be much of the trouble as the larger the projected image, people view it from the larger distance.

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It seems, the battle between the camera, lens keep going on. 😀

The Moon of 15th August

As I said, in the old Moon calender 15th August is always full moon. So, to have a full moon tonight was just a coincidence and I found her behind a tree at rather late 22:00.

—– I took the pictures of the full moon many times, using Tamron SP 500 mm lens. But I didn’t want to do the same on this time, so took a picture of her with a kind of ordinary lens = Leiz Elmarit P 50 mm F 2.8 projection lens (costed me £1) modified to use on the Nikon Z camera, because, it was not a very sexy image with fuzzy lens. —– And after I open a photo on a PC screen, I noticed that there was a reflection of my room on the window glass = Oh, no, I should have put light off. How careless I was. The moon of 15th August has gone and we never have another chance for re-take. (Next full moon is not the 15th August one) We have only one life.

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Scarlet Pimpernel (’19)

Photo above were taken by the NZ-B lens.

I might have put as many posts of Scarlet Pinpernel after Cherry flowers. = I got a soft spot to this flower since I was very young. Easy reading villain’s novels kind is quite popular among the Japanese young boys (along side the robot comics) so, they are from Maurice Leblanc’s Arsene Rupin to even Alexander Duma or Scarlet Pinpernel. Still, Until I came to the west, I never seen this flower. —– So, the first sudden encounter was rather shock to me, especially it was the most unexpected kind of the place like an unassumed corner of the grass patch.

The photos here, the left was taken by a homemade, so-called Yashica-Macro and the right was by NZ-B lens.

Scarlet Pinpernel is a strang flower. Even if I got their seeds (very tiny) they never germinates from its seeds. Neither they came out the same place next year. —– How they were planted there = who put the seeds there is totally in a mystery ?

And they are very sensitive to the weather / humedity = when it was hot and dry, they close their flowers. = to see, fully open flowers, you got to see them on the morning.

The size of this flower is about 7 mm, in other words, to take picture of this flower filling a ful-frame needs to have a magnification of x3~x5. The photo above, left was the homemade lens called NZ-B, covering infinity to x0.6 on the Nikon Z7 body. And the right was called Yashica-Macro, originated from a broken Yashica-Kyocera compact camera, (the lens barrel and a part of the lens were used) having a magnification of about x3. (The draw back of those homemade lens is, they can be used as a manual focus lens though, they don’t have iris = always fully open. = focused point is very shallow. —– don’t worry, I got number of ordinally macro lens as well. 😀 )

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NZ – B – lens

I wrote about NZ lens more than a year ago. Since then I haven’t go out with that lens often. Big bright lens is too big to carry in my pocket.

So, only the front element was recycled then. But, how about many other lenses ? In that 18~200 mm Nikon Zoom lens, there were 3 more groups of glasses were used. = When I tested, I found that the third group was fit to the purpose straight. = easy to make-up as a usable optics — I mean, for my purpose. (Left top is USM / Silentwave motor and the D was the diverging lens I used for an experiment “Retrofocus” as the front element.)

So, the third group glass together with its sliding barrel was just glued to the Nikon-Z mount ring. In this structure, the movement of the glass makes a focus from infinity to x0.6.

As you might have guest, this lens wouldn’t give any clear sharp image. = still, may suit for some subject. Wait and see. 😀 ( I’m serious)

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Walkthrough south of Themes

Photo taken by 110 Petax 24 mm on Nikon Z7

Photo taken by a homemade so-called ZM-2 lens on Nikon Z7

By ZM-2

I don’t know what this building for ?

Remain to be vulga might be a tradition of this area.

Where ever, whatsoever, at least we can see the sky. Thanks goodness.

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Beach Rose (2)

I’m not a fun of cultivated garden rose yet I got a soft soft spot with Beach Rose. Beach Rose originated from north eastern side of the asia, China, Japan, Siberian sea shore. There was a popular misconception that the Beach Rose spread while riding on the sea wave —– but they came to the west by the human hand. Anyway the Beach Rose of which Japanese calls Hamanas makes impenetrable dense bush on the beach. And this Hamanas is a long cherished flower to the back-pack traverors — since they appeared in the many books, poems, sang in the songs — yet still, we could not see them often because this plant was not easy to handle with its dense sharp thorn = we had to go to the Hokkaido to see the Hamanas in a huge landscape. So, I dreamed like my far inspiring roman when I was in my secondry school boy —– and it took another 5 years for me to see the real flowers.

(This photo above was taken by 110 Pentax 24mm lens on Nikon Z7 — rest of the photos here were taken either by Helicoid (B) or ZM-2 lens)

Whatsoever, I’ve been seeing this rose in the past 18 years, since I came here. —– blaime, When I came here, I was a young(er) man. Ha ha ha.

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