tamron50200mmf28

Jaron Schneider
A lens diagram is shown with two sections labeled "Wide INF" and "Tele INF." Each section contains multiple lens elements arranged in groups, indicated by G1(+), G2(-), etc. The light path is delineated, ending at "IMG." Additional labels include Fa, La, P, S, and CG.

Tamron Appears To Be Developing a 50-200mm f/2.8 Lens

According to patent documents filed in Japan, Tamron is working on a fast lens with a huge zoom range. The proposed 50-200mm f/2.8 would be the first of its kind, offering a massive range with no cost to light gathering capability pro-level 70-200mm lenses provide.