The large number of RF105/2.5s sold obviously proved that the market loved 'em enough to carry the original design and its kids forward with successive SLRs. I prefer the 100/2.8E for its size and weight. It really gives away very little to the 105/2.5. The 105/4 Micro is also sweet but a bit hard to find. I'm still a sucker for the old 85/1.8 and prefer it to the later--and very different design--85/1.8AF. The 85/2 didn't really cut it. Ironically, the new and dirt cheap(<$300) manual Rokinon 85/1.4 is looking like a killer lens on film and digital cameras.
Originally Posted by Mark Crabtree