Wide histogram for Photoshop 5.5 - 8
Wide Histogram gives an enhanced histogram tool for 16-bit images. The plug-in provides a 512, 768, or 1024 pixel wide histogram, giving between 2 and 4 times the resolution of Photoshop's built-in histogram tool. This is a must if you are interested in the details of the histograms of your 16-bit images. We provide 8 modes for the histogram, including RGB, Red, Green, Blue, Colors, Hue, Saturation, and Luminance.
http://www.drjohnruss.com/downloads/WideHisto.zip
http://www.drjohnruss.com/downloads/WideHisto.zip