Reliable. Precision. A pleasure to use. The real work of art. Double-Gauss lens. No wonder that became the prototype for Helios.
Sharp. Very good color reproduction. Extremely sharp when uses a macro.
Without the blocked pin aperture hampered operation..
Build quality: ★★★★☆
Small, lightweight, rugged construction. Aluminum coating soft and easy to scratch.
Market value / value of subjective: ★★★☆☆
Less than $ 100 is a very good price.
My lens has a broken lens coating - from what I can see in the pictures it does not affect very the quality of the images. From various sources on the internet I met with the opinion of the coating from this period are very soft and prone to damage.
Old photo of lens.
Here are some sample pictures.
They were made with Sony Alpha 300.
Pictures were taken with aperture F/4 ISO-100.
Pictures were taken with aperture F/2 ISO-400.
Pictures were taken with aperture F/4 ISO-400
Image - sony alpha a37 - various settings.