Sigma's constant f/4 telephoto for Nikon — the 100-300mm APO with professional speed.
The Sigma 100-300mm f/4D EX APO DG IF HSM is a duplicate listing of the constant f/4 telephoto described under ID 4061 in Canon mount — here in Nikon F with D-type coupling. The constant f/4 provides one stop brighter than typical f/5.6 zooms. APO elements ensure chromatic correction. HSM motor for quiet AF.
Same optical performance as other mount versions. Very good sharpness from f/4 throughout. APO elements control CA. HSM motor is fast and quiet. Constant f/4 is the key advantage. No IS. Compatible with Sigma teleconverters. IF design prevents barrel extension. D-type coupling for Nikon metering.
Nikon F mount with D-type coupling. Filter thread is 82mm. Weight is approximately 1,310 grams. Solid EX build. Tripod collar. No IS — main limitation. HSM motor. The constant f/4 across 100-300mm provides consistent brighter performance than variable-aperture alternatives.
Available at moderate prices. Check AF and zoom. Same specification as Canon mount ID 4061. The constant f/4 remains practical for sports in good light. The Sigma 100-400mm Contemporary offers more reach with IS. Best for tripod-based work where constant f/4 matters.