After scanning some difficult slides the last couple of days I have come to realize that exposing a slide for visualization on light table or projection will not scan well when it has deep shadows such as at sunrise where you expose to avoid blowing out sky. For these scenes, need to expose for the shadows which means using a grad nd. For my 75mm Nikkor f/4.5, I definitely need a center spot filter. The vignetting at sunrise and sunset is very obvious and annoying.
I will be sending a couple slides giving me fits to get drum scanned to compare to V850 scans. But, I believe I have found the limitation of the V850.
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