It has a great Multi-Layer Coating MC and deeply embedded front lens - the lens is quite good resistance to light in the front.
The design of optics has a beautiful visual art, high contrast and high optical resolution.
Minimum focusing distance of 30 cm allows you to get the copy ratio approximately 1:2.
After installing the intermediate rings reach the scale of 1:1.
Aperture smooth, without grading values. After complete closure get of circular the intermediate values we get something like a star.
Sharp from f 2.8
Very clever design. Focus ring fluted very fluently and precisely working.
Build quality: ★★★★★
Compact and solidly constructed. The whole of the metal.
Market value / value of subjective: ★★★★☆
Less than $ 160 is a very good price.
All photo taken by Sony A37 with Industar 61L/3 MC 50mm f/2.8.