Yoshizen's Blog

Soft option in close-up photo


The lenses of which I dubbed “Omunifocus Lens” produces quite usable images from infinity to 0.5m without having any focus control.  Yet, it has a limitation — closer than 0.5m, the image became too blurred.   Still, if the position of the lens was adjusted it can produce pretty sharp image.   So, I ordered the close-up ring for Sony E-mount and while waiting its delivery, I took a soft option of close-up technique.  = The lens was stack on the camera mount with 10 mm high soft plastic putty. (Bluetack) = As the lens was positioned further away from the image sensor it’s enables the close-up shot. 


Those homemade lenses were mounted on the OM body cap (which can be used as a Sony E-mount body cap), so that I can change each of the lens quite easily = take one out and just stick the other.   Since its humble origin from a toy camera or disposable camera, every lens are all one or two plastic, still each of them showed the different character.  Such as the one from panorama camera got quite deep depth of field = keeping omunifocus character even under the close-up shot. (Photo above left and middle)   Still the other lens showed very nice soft image. (Photo above right) — Can you believe, those images were created by the lens costed almost nothing !   And now you might be realised that the photography even with such thousands pound Hi-Tech camera may not necessary be very precise and rigid technology or art = in fact they can be very soft.  (You can see the images if the optical axis of the lens was 15° out.) 


Sony Tilt


This is a photo taken by a homemade tilting device for my Sony A7R with Canon EFS zoom, while giving 20° tilt to the lens. 

sony-tilt4-a09a6919I wouldn’t proclaim this photo was anything typical or special, still it might be pretty unique to this device.  Since the lens has been heavily tilted, focused area was only in the center and the both end was out of focus.  —– you may say “So what” I would say “Nothing, it was just a character of this device” that all. (Since broken EFS lens has no F-aperture control = it was fully open — still Zoom from about 24mm to 55mm and the manual focus was perfectly usable = not too bad for the lens of £5 from a junk box of a camera shop.


So the device or tilting attachment (which I’ve shown you the work piece on the previous post) was now usable state (though, I’m going to add a semi-automatic iris control for Nikon lens).  The lens mount was Canon EF even though Canon lens has no iris control, but its mount IS to attach Nikon, Pentax, Contax etc mount adapter.  With this device, up to 30° tilt is possible though, how useful is the another matter. Still, when opportunity was there, why not try.  It’s a fun.  😀

(The effect of extreme lens tilt IS, —> think IF one side was extended 15mm more, it’s mean for 15mm wide-angle  lens, it IS an extension for a life-size close-up, while keeping other end of picture still focused to infinity.)

In fact, I planed to make a tilting DSLR device using Canon 5D Mk-II, so that I bought one more Mk-II body to be hacksawed. (and 5D original body for research / test disassemble = so, I end-up to have x4  5D body — then, as I got Sony A7 body able to use it without hacksaw work ===> so, here is Sony Tilt !    🙂


A7 doing Good Job or just Meddling too much ?

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Quite a while, time to time (I don’t remember how many years)

I’ve been taking picture of the sky from my window.  Naturally, its

looks changes season to season, and it’s not necessary a dramatic

beautiful sky.   It’s just a sky.

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As I don’t go out for drinking or look for a bottom of the girls,

watching the sky is a healthy alternative (and cost nothing.)   😀

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Not just watching but taking photo mean, by a camera.  

So that, my Nikon with 18mm Zeiss lens has been a fixture on front

of the window quite a while.   And, — as I got Sony A7 and the adapter

to fit a Nikon lens to its E-Mount, I tested its 18mm lens on the A7 body.

—– though, the sky over dence leafy tree is a very contrasty image =

to the SONY camera.  (Canon 5D or Nikon D810 just take as it IS)

But, A7 is keep meddling (— are they try to brighten the dark shadow

of the tree ? — how do they know what image I want to have !)

DO they believe that they can make it for ME ? — how patronizing.

— should I say,”Thank you very much” OR “Silly YOU, stop it”  😦

                * * * * *

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Exactly the same trend to “Smart Phone” with hundreds of the

Fancy App,  Sony can do many tricks, such as the Panorama here.

(Above was a part of 18mm — 360 degree Panorama

— in my kitchen)  😀

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And this was a Panorama made by a 16mm Nikon Fisheye lens

(vertical line shows no distortion !)

— may be a fun to some user though, I’m very sceptic to those

too much Digital intervention.    It’s rather spoils the spirit of

the Photography than enhance it.   Spending more time gazing

 at the PC screen, than to stand against the subject = we are

going into more and more virtual environment and

losing the real touch of the life. 

—– And to the camera company themselves, = if the digitally

stiched-up photo is good enough, who need to buy expensive

wide-angle lens ?


SONY a7 for Pinhole Photo

My friend photographer, Antonio showed me a small camera.

(Along side his big Hasselblad ELM.)

It was a first encounter with SONY alpha camera —– despite

seeing a lots of camera review etc, so the photographic images

were familiar still, the real camera in its fresh was a shock to me. 

Almost the same size of the M4/3 camera still, having full frame !

(And the lens attached was a Zeiss, the images were quite crisp.)

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So, I tested how SONY  a7 camera can handle the Pinhole.

My set of Pinhole was mounted with an adapter (in this photo

the camera was a Olympus) and made a Mono-hole image.

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And this one was a Multi-Pinhole image.

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Then, this one was a Double-Density Pinhole image.

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And those photos were a comparison of the view of my Pinhole

against the Zeiss Planer 35mm lens. (Mind you, my Pinhole is a

wide-angle pinhole with a concave lens attached on front.)

—– the Pinhole view (left) seems wider than 28mm lens.

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The most remarkable point of  a7 camera IS, despite it is a full frame

camera, yet still as a mirror less, its flange back is only 18mm thin ! 

—– So, if a panel with a hole was attached on the camera mount, it

will have a 18mm ultra wide-angle lens’ view.    And I tested it while

placing the Pinhole panel directly on the camera mount (though,

there were a lot of light leak — still, we can see pretty wide image !)

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To compare this image to the photo of 35mm image above,

how it IS wide is clearly visible. (= This is the big advantage.)

I promised to Antonio, I’ll make a Pinhole adapter for his a7

camera. (In practice, I’ll just make a hole on his body cap.)  🙂 

And I might buy SONY.   😀


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