Greg
I would offer a contrarian opinion to Dave and Dan, both are gentlemen I respect a lot and hold their opinions in very very high esteem. In my view 70HR is just not in the same league as 50HR, 90HRSW or 138HRSW. When I had the opportunity to use this lens, I was underwhelmed. Nothing was particularly wrong just that it did not have the wow factor other HR lenses have.
Completely agree. Underwhelmed by the 70mm too. I have owned 8 Alpa lenses and sold the 70mm with zero regrets.
No idea why people rate it, but a good number do. As ever, YMMV...
Agree about the 50mm - truly excellent
and
90HRSW (must be the HRSW, no other version) - stunning corner to corner.
Afaik the 138mm is supposed to be a new high bar, but nobody has got their hands on it have they? (and... $12,500!)
Do you shift/ stitch much? - the Image Circle could affect your choice.