These are samples from the images used to create the curves in the previous post. ISO 100, no filtering: With 25 pixel kernels: With 152-pixel kernels: I don’t normally present the intermediate-ISO images, but I’m making an exception in this case for ISO 400, since it showed anomalous results in the curves of he… [Read More]
Archives for November 3, 2014
Nikon D4 read noise analysis
Here are the read noise vs one-dimensional low pass filter size curves for the whole-f-stop ISOs of the Nikon D4. Unfortunately, the D4 chops off the left side of the histogram for dark-field images in its in-camera raw processing: Here they are referred to the sensor: You can see that, up until about ISO 800,… [Read More]