Optically very equal.
Sharp, nice colors.
A copy of the Biotar. A successful copy.
Sharp, nice colors. Bokeh happened to me not to the liking of.
Perfection and comfort - what more could you want.
Build quality: ★★★★★
Metal, as everything should be.
Market value / value of subjective: ★★★★★
Less than $ 50 is a very good price.
Construction of Helios (photos): -
Here are some sample pictures.
They were made with Sony Alpha 300.
Pictures were taken with aperture F/4 ISO-400.
Pictures were taken with aperture F/2 ISO-400.