Reply To: Cross-polarization with camera scanning

[Adam Pratt]

I’m glad you posted all the details you did, but changing the aperture of your lens is definitely a factor. A camera lens will have different optical results at different apertures, and most lenses are gong to be softer at 2.8 than they will be at 6.3. In fact, depending on your lens, it might be even sharper at f8. If you shoot an aperture priority or manual mode with a consistent aperture, I expect your shutter time might be different but the sharpness should be the same as long as your copy stand is steady and you’re using a remote shutter release.