In previous work for a project about observer metameric errors in digital cameras, I built a program that, given a target color and a set of sample reflectance spectra, will: Using principal component analysis, find a set of basis functions for the sample set Assuming the set is lit with a particular illuminant (I used… [Read More]
Moving away from Sony cameras
I’ve been using Sony cameras for well over ten years. When they came out with the NEX series of APS-C MILCs, I was all over them. I fully committed when they introduced the alpha series of FF MILCs. The Sony FF cameras, I have owned: a7R a7 a7RII a7II a7RIII a7RIV a9 a9II RX1R I’ve… [Read More]
Observer metameric error in simulated cameras, part 2
In previous work for a project about observer metameric errors in digital cameras, I built a program that, given a target color and a set of sample reflectance spectra, will: Using principal component analysis, find a set of basis functions for the sample set Assuming the set is lit with a particular illuminant (I used… [Read More]
Observer metameric error in simulated cameras
In a previous post, I described how I had created a Matlab program to analyze sets of reflectance spectra, generate basis functions, and then use those basis functions to produce metamer sets, all with an arbitrary fixed color. For review, here is the methodology I used: Using principal component analysis, find a set of basis… [Read More]
Nikon Z9 goes to an event
After more than two years of semi-isolation, I stepped out last weekend. The occasion was a middle-school play. Much of my family, a couple of hundred other mostly-maskless people of unknown vaccination status, and I crammed ourselves into a room to watch the youngsters perform. I brought the Z9 and one lens: the 70-200/2.8 S…. [Read More]
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