Are you one of those people who are always skipping ahead in the handouts while the presenter is slogging through her PowerPoint slides? Well, this post is for you. Normally, I present the numbers and then the images to back them up. However, there seems to be some interest in this topic, so I’m going… [Read More]
Archives for September 23, 2013
Does pushing in Lr affect white balance?
I took the data from the preceding post, and analyzed the chromaticity errors, which I defined at the square root of the sum of the difference between the a* and b* values of the unpushed and the pushed image. Here’s what I got, plotted, as before, against, the luminance of the test patches: Except for… [Read More]
Does pushing in Lr add contrast?
In a Leica forum, a poster advanced the thesis that pushing in post increases contrast, and posted some images made with varying f-stops as evidence. I was worried about the effect of flare, which varies with f-stop in many lenses. And — you know me — I wanted something quantitative. I thought I’d do some… [Read More]