Originally posted by twitch There's no need for AF with a 10 stop filter. Stop down, switch to MF, use live view and focus peaking with the K-3, and focus that way. If you are using a 10 stop filter you are obviously not trying to capture any fast moving action
True...just an idle curiosity question w/ the claimed -3 eV focusing capability of the new AF module, I was just wondering how good it was
Though it sounds like it might work fine from jac's experience w/ an 8 stop filter
On my K20D, I do the hyperfocal thing anyways since you want everything in focus w/ a landscape w/ silked water...
Only other case when I might want to focus w/ an ND filter would be doing daytime video at f/2 but that should only be a few stops.