I just got my first a7RII an hour ago, and one of the first things I did was measure the engineering dynamic range (EDR) versus ISO setting with the shutter in single shot mode, silent shutter turned off. Yeah, I know; normal people would go take pictures with their new camera. Not me, though; I’ve… [Read More]
Testing IBIS on the Kolari-modified a7II
So far, I’ve written 18 posts on the prototype Kolari-modified Sony alpha 7II with various rangefinder lenses attached, and also, as a control, with the Sony-Zeiss 35mm f/2.8 FE. The series starts here. Kolari has been shipping thin sensor stack modified a7’s for quite some time, and the a7II sensor and sensor stack are very… [Read More]
Sony a7II focus peaking anisotropy
It has seemed to me that the Sony alpha 7 camera line’s focus peaking is more sensitive to contrast variations in the horizontal than the vertical direction. I thought to devise a test. I wrote a Matlab script to generate a sinusoidal grating that varied in one direction in frequency, and in the other direction… [Read More]
Kolari thin-stack mod on a7II vs M240 — Leica WATE at 21mm
This is part 18 in a series of posts on a prototype of the Kolari Vision thin-stack sensor modification for the Sony a7II. The series starts here. The Leica 16-18-21mm f/4 Tri-Elmar-M performs well on the a7II at all focal lengths, and better at 21mm with the Kolari stack. How does the Kolari thin stack… [Read More]
Kolari thin-stack mod on a7II vs M240 — Leica WATE at 16mm
This is part 17 in a series of posts on a prototype of the Kolari Vision thin-stack sensor modification for the Sony a7II. The series starts here. The Leica 16-18-21mm f/4 Tri-Elmar-M performs well on the a7II at all focal lengths, and better at 21mm with the Kolari stack. How does the Kolari thin stack… [Read More]
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