SZ Lens (for Nikon)

Since I failed to make the NZ lens for Nikon use, I tried it again with similar Sony lens (18~200 F3.5~6.3, A-mount lens which has been dropped and internally broken—– I think I got it for £5.)

Having had previous experience, this time I planed the lens (front compound lens element) should be mounted recessed inside of the barrel. = mounted inside still not block the movement of the zooming barrel —– and all those massive work was what I’ve been doing past 2 weeks or so. = hence no party, no dancing  😀

Whether those 2 lenses were using same design idea or not, they were having some similarities.  Front lens seemed to be about the same size and the shape, though their character seemed to be very different.  Unlike the worst lens of NZ, this SZ (for Sony Zoom) showed rather decent quality as you can see on those test shots image. (mind you, there is no iris = 100 mm lens / fully open as about F2,  but not necessary giving beautiful softness.)

Something what I found remarkable was that this SZ lens got quite good macro capability !   (Those shots above (original size) were with additional extension ring.)  (Further test shot image may come soon or later.)  😀

It’s a funny irony, Nikon lens was used for Sony and Sony lens was made for Nikon. —— (I didn’t play such game on purpose —– It was just an unintended consequence.)

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謹賀新年

Well, having pretty noisy firework somewhere outside, it seems the new year has come. —————— ( not much significance to Zennist though — )  

Without cheating, this IS really the morning sky of the first day of the New Year.  (1.1.2018  7:56)

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F & M Window decoration for 2017

It’s an old story still, I don’t want the staffs stuck and left over.  (Get clean up before the year changes. )  😀

Hee Ha, — of course all those photos were taken before Xmas, but I was busy making a lens.  😀

And those pictures, if the image was distorted, they were taken by Nikkor Fisheye 16mm F3.5.  And the rectilinear wide-angle image  were by Zeiss Distagon 18mm F3.5 —– the rest of fuzzy images were taken by a homemade G9 lens all on the Nilon D850.   Thanks for watching !  (Don’t drink too much tonight.)  😀  

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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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G10 Lens Test

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

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

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)

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)

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

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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