Lens Comparison (2)

This photo — by the Zeiss 18mm F3.5 on Nikon D850 / ISO 800, 250th Sec —– (All the photos in this post were cropped only in its hight, and the width were kept as its original to show the relative angle of view of each lens —– for example, after the widest 18mm, next wide image was shown here by the Fun lens, which was originally an one-time use panorama camera and the viewing angle was the 35mm equivalent of 27mm lens.)

Seeing the same old sky, I took the picture of the same, with many different lenses —– and made more or less the same images.  😀

Still, they are only a half of my homemade lens stocks.  (It’s annoyed myself a bit) 😀

The first of this operation was, the Helicoid (B) with a setting of ISO100, 650th Sec —– since this lens has the brightness about fully open F2.2,and 2.2 only = no iris = needed to use lower ISO.

By the so-called Fun Lens / ISO 100, 15th

By the Helicoid (A) / ISO 100, 320th

By the G9 lens / ISO 100, 1250th

By the Double Density Pinhole / ISO 6400, 250th

By the G10 lens / ISO 50, 640th

By the Mag lens / ISO 50, 650th

By the Sony 30mm F3.5 / ISO 50, 500th —– I can not stop thinking, what this “sharper” image can give us, more than the other fuzzy images ?

By the Sony/Zeiss 55mm F1.8 / ISO 50, 2000th (It seems something wrong with this lens’ focus = even with manual setting, the lens moves away when the shutter was pressed = may be that’s why it was offered so cheap. (and lots of them in the Ebay)   😀 

100 years old Kodak lens (equivalent of 175mm F10 / ISO 400, 500th —– as a 175mm telephoto lens, the image was quite good, especially considering that the lens consists only symmetric 2 glasses, that’s all ! )

By the Koda-Fun lens / ISO 50, 4000th

By the SZ lens / ISO 50, 1250th

By the so-called Omuni (focus)lens / ISO 50, 1250th

More or less the same fuzzy images though, still got each character.  It’s not too bad to play with those lenses.  (Anyhow, they didn’t cost me much — still gave me a lots of fun)

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What on Photography

Although it was a bit cropped, still this was a quite wide-angle view (18mm) of a morning sky, and this was more or less the view what we are actually seeing = in other words, this IS a faithful representation of the view = and that was what we expect to a photo.  —– So, the Photo IS a COPY of the subject, therefore if the subject wasn’t there in the first place, the Photo couldn’t exist neither.  And may be because of that, the Photo competition prohibit the Photoshopped photo.   Photo has to stay as a faithful secondary image of the subject.

And this is the image of the same sky, taken by the other camera at about the same moment of the photo on top.

So, this is a tricky situation. This photo above may be seen to be an illegal image using a ready-made digital effect, so-called “Filter” such as in a smart phone.

But this is the natural character of the lens.  From the common sense, this images may not to be regarded a Photo still, this IS the image, straight out of the photographic device / camera.  (Downsized to 1200x*** and collaged by Picasa in my XP laptop)

They were the images out of Sony A7R with so-called Helicoid (B) lens. —– If the photography was a mean to express oneself, those photos may have my feeling which evokes much deeper into your subconscious.  And they were not by the ready-made effect but only one of the kind in the world. (Whether you like it or not.)   😀

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Helicoid Lens (B)

Helicoid Lens (B) is a sister of (A).  Both came from the same Sony Zoom lens and I’m using the same size helicoid which I got from China.

So, this 18~200 Zoom lens became the SZ lens and the Helicoid A and B.  Well done.

Lens was tested while temporally fixed on the camera using plastic pate, such as whether the lens should be used reversed or not, and with smaller Iris etc. (Photo middle) In order to adjust the infinity, lens was fixed on a M42 to M39 adaptor ring on the M42 to AI (Nikon) mount adaptor. —– after the infinity point was found, the position was fixed with super-glue. (Photo right)

It seems this lens was an aspherical as the funny shaped reflection on the surface suggests. (Photo left)  This helicoid extends from 17mm to 32mm and the Lens which got about 35mm focal length can focus from infinity to 15cm close-up.  And the calculation from the exposure reading, the brightness seemed to be F2.2.

Though, this lens is having very strong aberration. ( Astigmatism ?) —– same as the Lens (A), the center wasn’t too bad but image quality was one of the worst = which I appreciate a lots.  😀     (It’s so rare to find this kind of image in the photography because, nobody design the lens like this for sale.)

(Photo here above, Left was the (B) lens in its finished looks — looks cool isn’t it ?   😀  And the right showed the Lens’ closest view, which showed its softness for comparison.)

For impressionistic fuzzy image, the poorer the lens quality, the image looks more interesting. (I think / and that was where Pinhole Photography stands) —– strangely, the close up image was rather sharp. (I mean its center was) (Photo right)  —– Whatsoever, I’m quite happy with its outcome.   😀

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Piece of Art

I’ve just received a mail, large air-bubbled envelope.  And I discovered a content, a piece of Art which could have been packaged in a heavy wooden crate.

It’s from a daughter of my friend, who started a fine art study, whom I gave a pinhole photo device. —– As a return of a 0.2 mm void on a beer-can panel, she made pretty unique image of a master piece for me.  (It’s a proof of that, a 0.2 mm void could have a trade value for could be a priceless master piece though, don’t take it for a precedence, it may not work for your case.)   😀   (A void created by a Zen master could have a significance, comparable to the whole universe.)   Believe me.   Ha ha ha.  😀

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Morning SKY – 18

Took on 18-01-2018/02:41   (This photo got funny reflection of the room)

England was having only +9° weather and severe gale force wind, nevertheless the life goes on and as usual, still, a morning is keep coming.

/6:45 (ISO 800, 2 sec)

Looking out the window, I noticed rather fancy sky.   (Except the last photo, all the pictures here were taken by a Nikon mount Zeiss 18 mm lens / on AV mode)

/6:47 (ISO 800, 2 sec)

On front of my eyes, the Sky changes minutes by minutes.

/6:49 (ISO 200, 6 sec) —– When those 6sec exposure occurred, the camera was hand-held, while the top of the lens was pushed against the window glass.  😀

/6:54 (ISO 200, 6 sec)  (Notwithstanding its hand-held 6 second, the picture was surprisingly good. —– don’t you agree ?)

/6:56 (ISO 200, 6 sec)

/06:59 (ISO 800, 1.3 sec)

/07:01(ISO 800, 1 sec)  (The light in the each picture was a different aircraft —– so many of them flying)

/07:09 (ISO 800, 1/3 sec)

/07:32 (ISO 200, 1/20th sec)

/08:04 (ISO 100, 250th)

/08:33 (ISO 100, 640th)

At last, the sun came out.

/08:36 (ISO 100, 80th)

(Only this picture was taken by a homemade G9 lens on Nikon D850.)

 —– Related Post / “Morning Sky” / “Paint the Morning Sky“

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Omuni-focus Lens

About a month ago, I talked about Halina camera and its lens. —– A story how I made its lens to use on the Sony A7R camera and showed its sample photos.

While checking those homemade lenses, I found that the said Halina lens could, (with an additional diverging lens on front, as its focal length become longer) be used with a thicker Nikon body.  So, I further modified to add a diverging lens and mounted them on a 42M (Pentax screw) to Ai (Nikon) mount adapter. = Here I got Omuni-focus lens for Nikon DSLR. (And this work was somewhat related to the other lens)

I know, this situation is having a silly contradiction.  Why 47.5 MP Hi-Res camera need such low-Res images ? —– Omuni-focus mean, nowhere having a “Distinctive OUT of FOCUS (Bokhe) image” in the same time, no “Clearly Focused image” either.  = Just rotten images spread from top to bottom. ( More like a pinhole photo ! )   

Yet still, those photos above, both far and close subjects, it is a rather remarkable phenomenon, such a cheap plastic lens can make (a kind of) usable image in any distance, without focusing, without using smaller F-aperture.    (BYW, the last dried rose was taken with an additional close-up ring) = Omuni-focus is not necessary an almighty.)

And those comparison photos were for academic interest.  Left was by this Omuni-focus lens, and the right was in deed, a pinhole photo image !

Now, my point must be clear, not necessary only decent sharp image could be a good photo.  (Though, I’m not implying my fuzzy image here IS a good photo.  😀

—– May be not a good photo still, I found that those fuzzy images appeal to our deeper psychology. —– I had distant memories in my subconscious, I might have seen this long long time ago —– may be even on my previous life ? ? ? ) 

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Oxford Street, it WAS

I know, I should have done this week ago.  Nevertheless, here the photos.

Those window decorations were from Selfridges —– but I wasn’t so much impressed.

(Strange green colorings in the shadow area was created by the Sony image processor. —– It IS a headache with this camera.)

So, it WAS a so-called Xmas decoration. (Now there are only Sale, Sale signs)  😀 —– Most of the photos were taken by  the Homemade G9 lens.  (except last one which was by Sony 30mm F3.5 and the camera was Sony A7R)

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NZ Lens

Before, I’ve made close-up lens out of a front element of the zoom lens.  So, I wanted to make something different from this Nikon zoom lens. (AF-S Nikkor 18~200 G ED)  Conveniently, the front element of this zoom lens extend  = it’s mean I don’t need to look for a focusing helicoid to use with this lens. (It’s already there.)  😀

The matter of conversion was, to mount the separated front lens unit to a camera body.  There was a possibility to make the lens for Nikon mount. —– but on the end, I found that, unless I could trim off yet another 2.5mm from the lens barrel, it was only useable on Sony E mount.  The photo above was showing how the glue-up connection was made. (Aluminium ring was glued to the lens barrel first, then it was stick to the body mount.) (First plan was to mount the lens unit to a lens reverse adapter for Nikon though, as it couldn’t get an infinity focus, plan was changed to Sony = an adapter to use EOS lens to E-mount was chosen for its matching diameter.)

So far this lens is the heaviest among my homemade lenses.  Looks a bit strange though, it would give an impression of some kind of professional gear, not a homemade mock-up.  😀

Photo above are the test shots of this NZ (NZ for Nikon-Zoom) lens.  It looks the most murky, fuzziest image out of my many homemade lenses.  It was not a kind of light scattered halation — much more fundamental = light is not focused to single point (worse than spherical aberration and the image field was curved) —– Mind you, against its focal length (about 90mm) the diameter of this lens was 60mm =  it’s mean, 90mm lens brighter than F1.5. — Well, unless it was a few thousand pounds lens, no designer would give any guaranty of the decent quality for such bright lens.—– If I could produce decent sharp image out of this lens, it is a fraud. 

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G9 Snapshot of the town

Well, they may looks all same.  😀       The shot by a homemade G9 lens on Nikon D850.     A kind of mystery was that D850 recorded this lens as a 50mm F2 lens = it’s more or less correct  (F2.5 was more likely figure though) —– How they found this ? ? ? 

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G9 Lens

I show you a yet another homemade lens : G9 Lens (with Nikon mount).   As a matter of fact, this lens appeared here before, in the other guise.

Similar to G10 lens, G9 lens was a front element of the Canon’s G-series compact camera.  Before, the lens was made Nikon mount like an individual Macro lens to use on a bellows.  With an arrival of Nikon D850, I did a remake of the lens, while giving a focusing barrel.  Hopelessly fuzzy image need to work with the best camera which got the finest resolution.  😀

From the previous Gaudy Lens’ experience, I took a lens barrel from Olympus film camera. (Photo above) And re-mounted the lens, deep inside of the barrel.  On the Nikon mount, this homemade lens can give a focus from infinity to 1/3 close-up.  The lens optical character was almost the same to G10 lens though, G9 has 50mm focal length, instead of 60mm on G10′. (yet makes very little difference)

This was the test shot.  The softness on a dry rose wasn’t too bad.  (It’s surprise to see even such fuzzy lens can show quite a small pattern of the tree.)

Only a trouble from D850 was the size of the each photo, 20Mb causing a bit of havoc. (Still, on this blog = they are cut down to only 200Kb or so —– Why use D850 ? ? ?)   

Further shot on G9 + D850 would come soon. 

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