I read the ZM 21 is optically the same. The 2.8 stop would be nice to have on a 21. I think I am quite content with my ZM 25, 35 and 50/2; but if I went for a 21, I would want it faster than f4. I know it is only one stop and that one can compensate with faster film: but I would want the flexibility. Erik, the zm 21, like the other biogons, is quite flare resistant and has sharpness that is not abrasive or harsh; its tones seem to range so smoothly from one to another. As I said, I would buy one if I wanted to shoot wider than 25mm; but the 21 doesn't seem to bring that big of an unique difference over the 25 FOV. As it is, I am thinking down the road of the 18mm ZM for something reaaaally wide....but this is not a priority for me at all.ErikFive said:Anyone tried the ZM 21? Is that the same lens as the G mount or have they done anything with it. I want a new 21, but I want to start to try out some of the Zeiss lenses. Heard so much great things about them and havent gotten a chance to try any of them yet.
Hi, they are not the same construction. Even if they are both biogons and have a 9/7 Formula they build with totaly different lens stes. Have a look here:thomasw_ said:I read the ZM 21 is optically the same.