Yoshizen's Blog

Our vision — Photo image

This is a part of the previous post —– as I found it got very important point in the aspect of Zen (See — feel — think — what is real — truth) not only in Photography.

Rather fragile looking Scabious —– the lens showed peculiar depth of field image, and the size of back bokeh is gorgeous.

(But have you ever seen such bokeh image in nature ? —– they exists only in the photographic image = they are not real, neither your eyes are telling the truth —– So, how can you tell that the photography IS the faithful copy of the real, without knowing your own eyes could not tell what is real.) 😀

(For example, we are not seeing square building, since we got fish-eye vision as our eyes are round ball, so that, our brain is reconstructing the image following the stereotype that the building is straight = therefore, the photo of the building has to be square ! —– So, how can you tell that the photo of the building is faithful copy of the real building, = you see what I mean.)

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Somewhat related reading < St. Lucia — wire figure >

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ZM lens — the most peculiar lens so far

In fact this was not the first time this lens appeared here.   Before, the lens got different guise and used with awkward tilting bellows.   Yet still, using the same approach like the Leiz Elmarit P lens, I wanted to give a new lease of life to this one.

Same as that Elmarit projection lens, the construction was done by just put together readily available component from the Net (except only one glue pont).  (Helicoid ring got 25~55mm extension and able to make 25cm close up for x0.7 image.  Focal length was about 45mm and F2)

As I wrote before, the origin of this lens was not known — probably the front element of a zoom lens.   Under the certain handling, the lens can give pretty good image.

So, it is a sharp detailed image ———  (so far)   😀

ZM(x5)-Z-Feb- folder

However, with a bit different focus, suddenly the lens makes totally different kind of image.   (You may not believe its the same lens) = as you can see the photo right, the depth of field was very shallow and the bokeh (+ halation) is amazingly strong.

Lens seemed to have 2 element still no apparent aberration exists. —– but I can not guess why the lens can make such prominent bokeh where it was not in focus. ( fore-focus seemed to make coma like aberration = So, to make a focus on the edge, the image with bokeh appeared —– as long as it was in the focus, the image is sharp, though, once it was out of focus, suddenly the image became very blurred.)

How strange ? ? ?

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