I have a sizeable collection of various older manual focus SLR lenses, including some rather obsure ones such as Exakta, Topcon, Praktina, Miranda, Edixa, Konica, Petri, etc, as well as more common AI Nikkors, Minolta MD, Leica R, etc. If I use these on a new Sony A7R with an adapter, I assume I must use manual lens stop down, correct? Would I focus wide open, then manually stop down? If so, will the viewfinder go dark from stopping down (necessitating a tripod)?
I am fortunate to also have kept my A900 and Zeiss, Sony, and Minolta AF lenses. What will the difference be in using the newer LA-E4 vs LA-E3?
Thanks in advance
Beach Haven, NJ