Jupiter-21M 200 mm f/ 4 Lens

Weaknesses:

heavy weight and lack of screw to mount it on a tripod. We must aquiastare the 70mm ring for tripod.

Comments:

Image quality very good, very sharp and beautiful colours

The focus ring is very long, making precise

Beautiful and creamy bokeh

Weaknesses:

Very heavy

Comments:

My impression has been a very good lens generally, better than expected

Great image quality. 

Very sharp.

Great bokeh.

Feel of a great old school lens, not too much contrast.

Weaknesses:

It's heavy and bulky so you won't want to be carrying it all the time.

Comments:

This lens is GREAT. Image quality is awesome, very sharp and with great bokeh and colors. The mechanic focus is very precise, with a long turn. The images are very different from nowadays lenses, which tend to be too "punchy" with lots of contrast. With the Jupiter 21M you get the feeling of an old school lens, which doesn't deliver much contrast and yet you love the image results. It is very fun.

https://www.flickr.com/photos/133477133@N08/sets/72157655921166470/with/20067644275/