Sigma DG 150-500mm f5-6.3 APO HSM OS for Nikon F format_Digital Medium Format and the company also makes

and the company also makes a series of 35mm format cameras

and they did a pretty darn clean job

The Canon Powershot A430 is a aimple digital point-and-shoot with a 4mp sensor and a 4x zoom lens

diaphragm is good

and five lenses: the 20mm fisheye

Sigma DG 150-500mm f5-6.3 APO HSM OS for Nikon F format_Digital Medium Format and the company also makesThe Sigma DG 150 500mm f5 6. 3 APO HSM OS is a long lens with a long name. This is a long range supertelephoto zoom lens with pretty solid optical performance. The optical image stabilizer helps keep things steady, and a large grip tripod foot makes for easy handling. Cosmetic condition is decent, with some finish wear; the worst of it is on the (otherwise fine and functional) tripod foot, where the "non slip" coating is peeling and lifting in parts.