Helios 44M 58mm f/2 M42 8 blades

Excellent build quality.
Optically very equal.
Sharp, nice colors.
A copy of the Biotar. A successful copy.

Optics: ★★★★☆

Sharp, nice colors. Bokeh happened to me not to the liking of.

Ergonomics: ★★★★★

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.

Links:
Construction of Helios (photos): -
http://www.cyberfoto.pl/tematy-ogolne/78784-budowa-heliosa-zdjecia.htm

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.

Carl Zeiss Jena Triotar 135mm f4 M42

The Triotar is a large lens and heavy. Very sharp. Focusing is difficult.
Aperture Blades - 15 - beautiful bokeh.
Max Aperture = F4 Min aperture = F22
Pre-set control with half stops between F4 and F22
Min Focus distance is under 1.2m
Optical scheme: Triplet, 3 lenses in 3 groups
Filter thread = 49mm

Optics: ★★★★★

Sharp, sharp, sharp.

Ergonomics: ★★★☆☆

It is difficult to focus because of the size and weight of the lens. The focus ring is not precise.

Build quality: ★★★★☆

Heavy metal indestructible.

Market value / value of subjective: ★★★★☆

Less than $ 150 is a very good price.

Here are some sample pictures.

They were made with Sony Alpha 300.

Pictures were taken with aperture F/5 ISO-100

All photos without amendment in graphics programs.

Pictures were taken with aperture F/4 ISO-100