Mamiya 55-110mm F/4.5 Lens For Mamiya 645AF Series & Phase One Review

The Mamiya 55-110mm F/4.5 is a standard zoom lens designed for the Mamiya 645AF medium format system and compatible Phase One digital backs. Covering a versatile range equivalent to roughly 35-70mm in full-frame terms, it offers a practical everyday focal length for landscape, portrait, and general shooting on medium format. The constant F/4.5 aperture is modest but typical for medium format zooms of this generation, and the lens includes a 67mm filter thread.

This is a used lens sold in excellent condition by KEH, complete with caps and hood. It represents an affordable entry point into medium format zooming for owners of the 645AF system, though it lacks the speed and modern coatings of newer optics. For photographers working with legacy Mamiya or Phase One gear who need a flexible walk-around zoom without spending on premium glass, it fills a practical niche. The relatively slow aperture and older design mean it won't match the performance of fixed focal lengths in this system, but it trades some speed for range and convenience.