Originally posted by BigMackCam If I use one of my fully manual lenses on the K3 and focus through the viewfinder, will the AF Fine Adjustment setting alter where the focus confirmation triggers?
I believe the AF fine focus can move the point of focus confirmation. But as Adam pointed out there is so much 'slop' in the AF confirmation that it is not reliable at any aperture under maybe f/5.6. Far better to use the focusing screen.
Also, note that there is only one 'general' setting for all lenses, so adjusting for your Helios will also adjust for all other manual lenses. Only lenses with ID chips can use the AF fine tuning on a lens by lens basis.
Also, AFAIK, with manual lenses the AF confirm is only using the center AF point so if you are trying to get something even just slightly off center in focus the AF confirm light is not your friend.