Yes, it's bad. It has a cyan fall off at the edges. It's possible to correct it in Photoshop, but why bother? I made a mistake taking it with me to Patagonia, and still feel the headache...
Contax G2, G1, 21/2.8, 28/2.8, 35/2, 45/2, 90/2.8, Leica M6 Ti, 24/2.8 Elmarit-M ASPH, 85/4 ZM Tele-Tessar. Nikon F5, 21/2.8 F Distagon, 50/2.0 F Planar, 100/2.0 F Macro-Planar, 180/2.8 ED Nikkor.