This is the 51st in a series of posts on the Fujifilm GFX-50S. The series starts here. I am reading many complaints about photographers who are having difficulty in manually focusing the Fuji GFX, both with the native focus-by-wire lenses and adapted ones. I have developed what I think are highly accurate ways to focus… [Read More]
Search Results for: a7ii ibis
Sony a6300 — self heating
This is part of a long series of posts about the Sony a6300. The series starts here. The Sony a7RII and the a7II both have some self-heating issues when asked to make successive long exposures. The suspicion at the time was that the IBIS systems in both cameras provided some degree of thermal isolation and… [Read More]
Sony a7RII uncompressed read noise and EDR
Yesterday, I posted a comparison of uncompressed and compressed read noise and engineering dynamic range for the new version 2 firmware on the Sony a7II. Today I’ll do the same for the a7RII. I looked at a 200×200 central square and examined the red and blue raw channels, and one of the green ones. The… [Read More]
Modeling camera motion
I’m going to take a little break from the ongoing monolog about book publishing. I’ve got a lot of work to do deciding which images need intervention in remapping to the GRACoL gamut, and performing that remapping, and describing what I’m doing would not generalize to other people’s book projects, so I won’t be posting… [Read More]
Nikon 300mm f/4E PF ED VR, Leica 280/4 Apo-Telyt-R
Yesterday, I posted some early testing results for the Nikon 300mm f/4E PF ED VR QP (I just threw that last pair of letters in there to see if you were paying attention) on the Nikon D810. I have access to a cult lens of similar focal length and aperture, the Leica 280mm f/4 Apo-Telyt-R…. [Read More]
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