Macbeth 24 patch colour chart, D65 lightbox, ASI224MC

A test shot of a Gretag Macbeth colour chart captured in a calbrated light box under standard D65 conditions. Camera used was a ZWO ASI224MC with the fisheye lens and ZWO IR-cut filter in place, shutter speed 1.7 ms, gain 200, Wred = 62, Wblue = 99, max histogram 88%.

1500/2000 frames stacked in AS!3, no other processing apart from cropping and rotating image, shown as 16 bpp png file.

2022 11 21 0302 8 L Test AS F1500 6 ap257 rotcrop.png