Yoshizen's Blog

Oct’ Moon by SONY

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(Last night, I shot on AWB — to be fair to the camera, I did retake with manual WB.  😀 ) —– Naturally the Moon is one-night size smaller. (Same camera and the lens though, the second one looks sharper = thanks to Focus-peaking = better focused, but showed more noise)

Well, million years, it’s the same moon and it should look the same to the other one “August Moon” because all the conditions were the same except the camera was not Canon 5D Mk-III but SONY A7R.   The picture was taken through the double glazed window therefore it was not as sharp as “Red Moon”.   Something peculiar was that the supposedly the same Tamron 500 mm lens’ image looks sharper when it was taken on the SONY camera.  —– Unlike 5D as the SONY is mirror-less, it must be no mirror shock and the image processing engine in the SONY might be working harder to tinker the image ! = May be it’s the good things to a camera user. (I mean a lazy user who even not bothered to open the glass window.   😀  )

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Pinhole Photos on Alpha 7R

As I promised I made a pinhole to my friend’s  A7 camera.

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8mm hole was made on a body cap and thin aluminium

panel (beer can) with 0.3mm hole was stuck inside of the hole.

Utterly funny accidental discovery was, a body cap of  A7 can

be used on Nikon body, if it was inserted off 180 degree. = so,

the test of this pinhole was done by a D810 body while pulling

the Ai-coupling lever. —– Then, another coincidence, I saw a

good second-hand  A7R in a camera shop = what a convenient

timing = I bought it — by trading the Olympus OM-D away

(because the Olympus body seems to be falling apart.)

Therfore, those test shot was made by a SONY  A7R, on the

way to see my friend.  😀

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Some thing very remarkable was that all of those photos were

made almost automatic = camera has been set to AUTO and

without me changing ISO, Color balance etc, nothing, but just

aim and click. (the best of all, I could click while seeing

the view finder image.)  (It seemed, ISO was set 6400,

shutter speed were about 1/15~1/60 though,

I hate the Shutter nois, and the color)

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On coincidence, I started to make the Pinhole Photo on this  A7R. 

— Even funnier discovery I made was, that the Olympus’ old

OM body cap fit to the  A7 body if it was inserted 180 degree

off direction = I don’t need to order and wait a month to get it.

(Body cap or thin (and cheap) adapter is the base to make “Things”)

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So, first of all, my own pinhole was tested on a OM body cap while

the beer can panel was placed on the bottom of the body cap.

(Body cap penetrating 4mm into the  A7R = its mean 18mm

flange back – 4mm = 14mm ! — This pinhole can make 14mm

ultra-wide lens effect ! —– Well, in theory.   😀 )

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So, this IS the 14mm wide pinhole image ! —– though,

with the Cosine Rule, light fall off is such significant, image

became round.  “Like Pinhole camera”  Ha ha ha.  😀

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And this is the comparison, Nikon 16mm Fisheye lens’ view.

(Sound a bit patronizing, though, you have to see, what sort of

effort was paid to compensate the light fall off on the lens design. 

And, see the pinhole image above to see there is no distortion =

distortion was caused by the light-bending optics = Pinhole is

not bending the light (because they are not a lens)   😀

—– Well, I got a toy.   😀

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