I'm looking to round out my Alpa system with a longer lens for landscape work. Currently I have the Alpa Max, 47XL APO-Digitar, 90 HR-W Digaron and I'm shooting with a P40+. This combo works fine and stitching gets me wider when necessary but rather than crop, there are times when artistically I could usefully use a longer focal length than the 90mm.
Has anyone experience with the longer Schneider APO-Digitars such as the 150/5.6 or 180/5.6? If so, how do you find the handling of these with a tech camera? I'd be looking at the Alpa short barrel versions.
Would I be better off investing in say the 300/4.5 APO for my 645DF body instead?