This is 2nd one, I don't see much difference between them. First is 39****, this is 43****. The last time with m9, this time with M240. I return the first one because focus play.
Once I have time, I will do a quick test between it and OTUS and sigma art on M240 over distance to prove my feeling.
The lens perform flawless at infinity, no decenter or any funky stuff. I think I shouldn't complain as 90% reason I bought it for long coverage during travel, especially landscape, I doubt I can do better with this weight. Ron's 90me may be another choice, maybe he can chime in, he is the only one have all 3 90 I am talking about APO, Summarit and ME. From MTF, APO is still the leader.
On the other hand, APO's MFD seems well documented during a discuss at LUF. Putt state:
"The only weaker point of the APO is its performance at closer distances (0.7 - 2m). Here we see some softness and loss of contrast. When optimum quality is required in this distance region, one has to stop down to 1:4."
adamdewilde wrote:
zhangyue - How many copies of the 90APO have you owned?