Yoshizen's Blog

Helicoid Lens (B)

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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.

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

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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)

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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.

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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.)

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(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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Helicoid Lens (A)

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While hibernating in the winter (because, I can’t go ski kind, let alone climbing the mountain, = still have to do something — I made yet another homemade Lenses. (this time using a focusing helicoid sold in the net.)

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In the political stance, I should re-use other old camera’s lens barrel kind though, they may not come when I want.  So, I bought some focusing helicoids from China such as 12~17mm, 17~35mm, 36~90mm, mostly M42 fitting.  (M42 rear mount / Pentax screw mount can be easily converted to Nikon, Canon, Sony-E with a simple (and cheap) adapter.)

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And the lens I used was came from broken Sony zoom lens. (In the center of the photo above, two of the small lenses)

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So, the game starts = how to fix a small irregular shaped lens to the helicoid.   In here, cut a card-board paper to the shape (Photo left) and mount into an empty filter ring (Photo middle) — and 52mm filter ring was mounted to the helicoid. (Photo right) = to test and check if the infinity focus can be made. —– (this approach failed)

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And in here, another lens was temporally mounted on a helicoid with soft plastic patty (Photo left) —– Photo middle showed the lens on the previous photo was screw mounted to an aluminium ring which was epoxy fixed on to the 52mm filter ring, and to the helicoid, then to the camera body. (Photo middle and right) —– (For clarity sake, those photos were taken before the mat-black paint was applied

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This lens, with about 65mm focal length has an Iris ! —– though, the image made by this lens was too bad (except pretty good center) and the effect of the Iris was not much help.  😀

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So, they are the images. (Looks hopeless coma aberration)

My attempt to make homemade lens has been having funny paradox, while making the lens DIY, the image quality was just fuzzy and poor, —– yet still, I’ve been trying to make it somewhat usable. —– ? ? ?    Then the “Enlightenment” came which was “Why not”  It IS the nature of the lens = bad lens makes bad image.  What’s wrong ?  The top photo here was made by this, Helicoid Lens (A) —– I think, this bad image was not too bad.  I like this painterly effect.  Don’t you agree ?  (It seems, the Japanese Zennists are visiting here.   So, those “Play with lenses” are also the demonstration of the “Mind game in Zen”=  “liberate yourself from a stucked mind” “Why not”    Ha ha ha.   😀 )

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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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Paint the Morning Sky

Screen shot of the same photo

This is a screen shot of the next photo using Double Density Pinhole on A7R camera.

Zeiss 18mm F3.5 on Nikon D810

This is the original straight shot on Nikon D810. (cropped image)

Zeiss 18mm F3.5 on Nikon D810

This was the straight shot on Nikon D810 by Zeiss 18mm lens as a comparison.

Fun camera Lens (27mm? / F13) on A7R

The same sky by the Fun camera Lens (though not on the same moment = I was doing those shots next by next).

Wide DD-Pinhole

A shot by the DD-Pinhole — in fact, this was the last one of those photos on the morning.

Wide X4 Pinhole

Shot by the X4 Pinholes with wide adapter attached.

X4 Pinholes image again. (without wide adapter)

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Yet another X4 Pinholes image.

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Just a casual click on the kitchen window — only for a fun.   😀  —– but I like this !

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How about those ?  — Left was X4, Right was Mono Pinhole.

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Sweet images

Well, they were yet another template like photos — fuzzy cherry flowers, this time created by the homemade Mag-Lens.  

Don’t worry it wouldn’t cause any infringement of the copyright law.    😀

It supposed to make fragile flowers even more soft though, strangely, it made flowers looks somewhat like a ceramic craft.  —– ?      Are my eyes got something wrong ?

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How silly !

Nik-DD

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.

Nik-DD

Nik-DD

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

Nik-DD

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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Pinhole shot on OM-D

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OLYMPUS DIGITAL CAMERA /OM-D  M-E1

This was the first street shot of Pinhole on Micro 4/3 camera.

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OLYMPUS DIGITAL CAMERA  = I don’t like this automatic singature,  😦 

ISO was 3200,  AV setting —– just a casual shot.

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

My eyes have been trained to see ful-frame wide-angle.

= I don’t like this cropped image = I need to make a

wide-angle pinhole specially for M4/3 format.  ( Because

of the N-M43 adapter, this pinhole is 23mm further

away from the OM-D’s mount, effectively the viewing angle

of those pinhole photos were same as a 85mm lens.

= I should make the one directly attached to

the OM-D’s mount.)

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

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OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

Location was around the Oxford Street to Soho area.

(The dust on the senser is a headache.)   😀

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It’s the Gaudy Lens

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I developped 10s of devices/lenses to obtain painting like fuzzy effect

— and so far this gaudy lens seemed to be the best device for the job.

No filter or attachment available on the market  nor digital

manipuration can make the same effect.

(simplly nobody else needed => no manifacturer wanted to make)

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So, I’m enjoying a dance alone in the middle of nowhere.   😀

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The best things of this gaudy lens is, its balance of fuzzyness

and the ability to retain a certain details of the image.

(In fact, I can controle it by the size of paper hole/iris and

the amount of over-exposure/halation = so, it is not

like a wild animal of DD-Pinhole)  Ha ha ha  😀

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Meadow by Twisted Lens

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This was the first field test of the so-called

Twisted Lens = Two convex lenses stacked on a bellows.

As the lens was on a bellows they were easily

re-positioned = so, the effect of blur was adjusted.

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As the lens was on the bellows, they were rather awkward

to use, nevertheless it managed to produce the photos.

You might wonder why I fuss about such fuzzy images =

The reason is, in our eyes we may not seeing sharp clear

images — they might be the brain re-constructed image.

(Remember, we never see straight line with rownd eye balls

— straight line IS the re-construction in the brain) 

That’s why we are surprised and impressed by the sharp

clear photos, same as when we see a detailed close-up

photo of an insect which we can’t see otherwise.

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