Tom A
RFF Sponsor
Tom,
The 28 may be the weakest ZM wide, but the prints essentially look the same as the others, with identical contrast, tones etc, so I wonder why you think it boring but lrave about the others. It fits seamlessly into the line and interestingly, looking at the photodo site recently, I noticed the same off axis drop off in performance on the V4 elmarit as shown on the Zeiss MTFs for the 28 (compared to the 21/25)... and you don't hear people complaining about weak off axis performance with the V4! I certainly struggle to pick the shots from the 28/35 biogons on prints with angle of view being the more useful clue than resolution.
I think I keep comparing it to the two "book ends" here. The 25f2.8 and the 35f2 - and those are stiff competition for any lens!
I will warrant to shoot some more with my Biogon 28 just to to see If I am right about it. Could be that I just haven't used it enough. When it is nice and bright I tend to go for the VC 28f3.5 and when it is gloomy - I use the Ultron 28f2. Should load up and wait for some "half-assed" weather!