This is a rerun of yesterday’s bokeh vs shutter speed testing, with EFCS on and off, but with a different lens, the Zeiss Otus 85mm f/1.4. I set the lens wide open, and the ISO to 100. I lit the subject with a single Westcott 12×12 inch LED panel, with color temperature set to 5000K… [Read More]
Archives for 2015
EFCS and Bokeh — a7RII with Sony 90/2.8 macro
There was a recent post on DPR that showed dramatic effects on bokeh of EFCS. It was a apples/oranges comparison, with the mechanical and EFCS shutter speed different from each other, and the EFCS set to 1/8000, which is clearly out of the range where EFCS usually works well. Still, it got me thinking, and… [Read More]
Where to go with the color reproduction series?
This is the fourteenth in a series of posts on color reproduction. The series starts here. When I started this series of posts, I wanted to educate you all about the nature of the color reproduction problem, what some of the common — and not-so-common — techniques for dealing with non-Luther cameras are, what pitfalls… [Read More]
Gamut and gamma
I had a conversation with a poster here yesterday and the day before about out of gamut Macbeth color checker patches when rendered in sRGB. Turns out that’s a complicated question, and the answer depends on the illuminant and the adaptation algorithm. I’m working on a post about it. But that’s not what this post… [Read More]
a7RII/Lr ASP, C1 generic auto 6000K color accuracy
This is the thirteenth in a series of posts on color reproduction. The series starts here. In the title, a7RII stands for the Sony alpha 7R Mark II. Lr stands for Lightroom. C1 stands for Capture 1. ASP stands for Adobe Standard Profile. Alpha Photo, a DPR contributor, performed the Capture one conversion for me,… [Read More]
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