FWHM stat full-frame
FWHM stat center
Half Flux Diameter map
Test images
R channel
G channel
B channel
Flat image
Nikon Z7II - 75 mm aperture stop - 6% vigneting on corners
R channel
G channel
B channel
Flat image
Nikon Z7II - 75 mm aperture stop - 6% vigneting on corners
Nikon Z7II - comparison of field center between one frame (top line) and a stack of 63 frames (bottom line):
Stray light and internal reflection
Up : 75 mm aperture stop (20s exposure)
Bottom : full aperture (15 s expsoure stop). Internal reflection probably come from the edge of one of the lenses.
Return to full-frame optics pageStray light and internal reflection
Up : 75 mm aperture stop (20s exposure)
Bottom : full aperture (15 s expsoure stop). Internal reflection probably come from the edge of one of the lenses.
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