I'm looking for a 24 or 28 for my newly bought Nikon FM. I've heard that some of the MF AIS lenses had floating glass elements, which gives additional sharpness. If anyone has any firsthand experience with these, I'd love to hear your impressions. Am I correct in that the 24 f2.8 AIS and 28 f2.0 AIS are the only two in these focal lengths with this feature ? Thanks, Steve
