Channel Surfer's reviews

Sigma 170-500mm f/5-6.3 Aspherical RF APO

I picked this up to replace a 500 mm Reflex. Image quality is good to very good. Good technique is a must, the field of view is too small to tolerate sloppy shots. Can be handheld in bright sunlight, otherwise a tripod is required.

The tripod collar is at the extreme rear of the lens, I had to make an extension plate so that I could use an RC 2 quick release plate. Without the extension plate, the release lever on the tripod head was blocked by my vertical grip.