Sigma EX 17-50mm f2.8 DC OS USM for Canon EF boom It has Nikon's Matrix metering

It has Nikon's Matrix metering system (including 3D Matrix with D-type lenses) and shutter speeds from 30s to 1/8000s

Recycle time will vary depending on your strobe’s power output

with smooth focusing

Nothing dramatic: it's just been used

This Leitz Elmar 9cm f4 is a pre-war lens

Sigma EX 17-50mm f2.8 DC OS USM for Canon EF boom It has Nikon's Matrix meteringThe Sigma EX 17 50mm f2. 8 DC OS USM for Canon EF S mount offers a versatile zoom range from wide angle to short tele combined with a fast f2. 8 constant aperture. Built in image stabilization allows handheld use in a wide range of difficult lighting conditions. This is a lens for APS C sensor sized Canons, and won't work with full frame EF cameras. Clean glass, excellent functionality. Great cosmetic condition with only minor wear from use.