Overview

The Vega-5U 105mm f/4 is a Russian enlarger lens in M42 mount, requiring bellows for use. It delivers excellent sharpness and contrast, with essentially no chromatic aberration or flare when shaded. Bokeh is creamy at close distances but less attractive at non-macro distances. Build is simple, with a non-preset aperture and six blades; it is slow and best suited for tripod-based macro work. A user on allphotolenses.com also notes it is very sharp at f/4. It is an inexpensive option for macro enthusiasts willing to use bellows.