The 55/1.8 Super-Takumar is one of the great all-time "sleeper" lenses. It gets overshadowed by its "big brother", the 50/1.4, but I think it is every bit as good or better than the 50/1.4. Has a subtle but unique "signature", particularly close-up. I've been shooting this lens for 35 years. If I had to give up all gear except one lens, it would be a tough call between this lens and one of the 1950's Schneider Xenon's.