Yoshizen's Blog

Oxford Street, it WAS

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

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

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

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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

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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.)  😀

NZ(2)- lens

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.)

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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.  😀

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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

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D850 with G9-001

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D850 with G9-002

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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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G10 Lens Test

This is much awaited G10 lens shot !  (Oh, really ?  Who did wait ?)

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It’s funny to see, are they the graffiti or the cover of the construction site ? (Good idea.)

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I’m not sure whether the subjects were hopeless or just the images ? ? ?   😀 

(You must be convinced that to show the image, fine quality of the lens is not important.)

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Snap the town by Mag lens (3)

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How weird ! ? ? ?  (of the image of Mag lens or my eyes ?) —– I know.   😀

(I’m going to further this with G10 lens etc — some may say, It’s an obsession.) ——– Oh, my my my, it’s snowing.

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Snap the Town by Mag lens (2)

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Some more snap shot by a homemade So-called Mag Lens.

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With your annoyance even more to come.  😀 

PS :  By the way, I’m editing this blog on Toshiba Laptop with W-XP and Google Picasa —– though, when I see the same on iPad, the images looks darker and the color seems more saturated (in other words,”Picture looks more exaggerated”)  They were displayed differently on each device by device but my intention was not so dark.   Murky doesn’t necessary looks gloomy.  😀

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Snap the Town (by Mag Lens)

6Dec by Mag(1)-DSC07676It was nothing to do with Xmas though, I went to a camera shopping.  Alongside, I had my Mag lens, Fun camera lens, Sony A7R with me.  (I made a fun with shop staffs while testing D850.)  On the way back, I did some snap shots of the town-scape.  (All of them were shot by Mag lens except the last one which was by Fun camera lens)  = Have a fun.   😀

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How’s that ?   😀

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Winter Cherry (again) – (2)

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Just take picture of mere cherry flowers, this set up must be the most swaggering one. 

w-cherry8-a09a7031Still I’m not doing this for ostentatious show off.  simply because, the lens (rear part of a video camera wide converter) has 160mm focal length, hence it need to have quite long extension (therefore, need to use a bellows).  And why I wanted to use this lens here, you will see it in those photos.  Wide converter was made by a reputed good lens maker Tokina, not a jokey Chinese crap.  — I wanted their lens component, not the function of wide converter.  So, I hacksawed it to take a front concave lens out. (which became to the front element of “Wide angle Pinhole Machine“.  And the left over converging lens became a fuzzy long focal lens as you can see it here.  😀 

Those optical devices were designed to give decent requisite function in certain quality, it’s mean, those optics has been designed to eliminate the aberration by combining the different types of lenses — in other words, if the front and rear element was separated, aberration couldn’t be corrected.  

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(Photo left = despite of heavy halation, this lens gives quite sharp image.  And having a nice softness.)

So, this rear part of the lens showed quite a blur yet still, it retains the certain sharpness (= It’s a funny lens ! —– I like it though, shame, it’s so awkward to use.)

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Ideally those photos should have rather dark blue sky to show white halo around the flowers though, the sky was just hopelessly gray. (Another solution would be, go back there with a flash or LED ring light when the ambient light was getting dimmer. —– I might do it. )

And, to everybody, a Happy New Year for 2017

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How silly !

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Nik-DD

While checking my own post (I need = notorious trouble of mis-speling), I realized “Wait a moment, why did I need to make a screen shot of Aster flower, while having such fuzzy pinhole — How silly”

Whether you believe or not, I’ve completely forgotten the existence of Double Density Pinhole.  I should insist, this was not a demented memory but the Zen No-mind.   🙂   —– Zen only deals with the things on front = if not on front, it is not exists, since the mind is not clinging the No-existent things.

Anyway, to find the “Pinhole Machine” for Sony A7  and  For Nikon (+ adapter), and had the shot of Aster with ISO 25600 setting.  (More artefact noise would appear with longer exposure = dark evening)

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The left photo was a Double density Pinhole. — Nikon type Pinhole machine has Multiple Pinhole as well. (Photo right)

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They are the compalison = Pinhole machine for Sony A7 —– As the pinhole is much closer to the sensor, the images are much wider and the color on the edge is sifted to magenta. (Left is DD, and the right was mono-pinhole though, not much present fuzzy effect.

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Pinhole sounds simple and easy to make though, — because it IS such small, very difficult to controle = very difficult to replicate the same effect.

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Nik-DD

So, I have to be contented to have this fuzziness on Autumn Color.  🙂

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DD-Pinhole on OM-D, M-4/3

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

The DD-Pinhole was mounted like the other on OM-D’s body.

(DD mean, Double Density concentric Pinhole.)

= Pinhole inside of other pinhole !

— it’s a philosophical enigma Sir  😀

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TEST2-DD(4)-001DD-Pinhole chose the subject and much harder to use

in comparison to Single Pinhole.

Still, its painterly effect is fun to play with.  🙂

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