This is the seventeenth in a series of posts on color reproduction. The series starts here. You don’t have to read the whole thing to make sense of this post, but it will probably help if you read yesterday’s post. Today, I’m going to explore white point conversion errors with perfect (simulated) cameras and raw… [Read More]
Archives for 2016
Macbeth white point adjustment errors
This is the sixteenth in a series of posts on color reproduction. The series starts here. I’ve spent the last few days coding up a storm so that I can automate the color error calculations involved in analyzing Macbeth color checker charts converted by various cameras, raw developers, and camera profiles. I needed to test… [Read More]
Presenting capture accuracy results: aggregate chroma
This is the fifteenth in a series of posts on color reproduction. The series starts here. It’s fine to be able to describe of the color errors of each of the 24 patches in the Macbeth color checker, but is also useful to be able to say something about the overall color accuracy. One of… [Read More]
Presenting capture accuracy results: the basics
This is the fourteenth in a series of posts on color reproduction. The series starts here. I am writing Matlab code to automate the crunching and presentation of camera captures of Macbeth color checker charts. The purpose is to provide a way to test capture and raw developer accuracy. I’ve written code that does the… [Read More]
My least-favorite gear
A few days ago, I posted a paean to some of the best photographic gear that I used in 2015. This is the flip side – the gear that drove me up the wall in 2015. Firewire. It’s obsolete. It’s finicky. It’s not supported directly on new computers. But, if you’ve got a Hassy H-series… [Read More]