It’s hardly fair to compare a $1582 f/2 lens to a $4000 f/2.8 lens, but inquiring minds want to know how those two lenses compare, especially since both can be used on Nikon (Leitax conversion) and Canon (adapter). And so that comparison is now on the to-do list, probably as an addition to Zeiss ZF Lenses.
The Leica APO lenses can take time to find on the used market, but I just acquired what appears to be a very nice sample, at a 70% discount to the new price, which means it cost significantly less than a new Zeiss ZF 100/2! First I’ll have to verify its optical behavior, one never knows with a used lens that’s been shipped from Europe to America. However, I have full confidence in Leica’s service just in case.
I consider Leica’s four APO lenses to be stunning examples of the lens-maker’s art, part of my long-term strategy of shooting the best, especially when 60 megapixel DSLRs arrive. Patience in finding used lenses pays off.
See also my comments on the Leica 180/2.8 APO-Elmarit-R.