For Jupiter-3 and -8, as well as Industar -26M and -61 lenses, you’d need the slip-on 42 mm diameter hoods.
Two types of Soviet-made hoods for these lenses can be found: round and rectangular.

The rectangular version can only be used for certain types of Jupiter and Industar lenses. These would be the Jupiter made until the 1960s, and were usually with white aluminium barrels. These lenses did not have rotating fronts. Later Jupiter (and Industar?) lenses made from the 1970s onwards would have rotating fronts. A rectangular hood would rotate as the lens is focused and would result in various degrees of vignetting.
The round version is for the later Jupiter lenses. Usually these are the black Jupiters. They should also be the type used for Jupiter lenses on Kiev cameras. A round hood will always have the same orientation when the lens rotates during focusing so vignetting can never be a problem.

The hoods (diameter 36mm) for collapsible Industar will also fit Elmar lenses. They are deep enough even for use with Elmar 9 cm lenses. On a 50mm, they can be too long.

This hood can easily be DIY’ed with a piece of blackened cardboard tube. 3 cm deep and 36mm wide, no tapering necessary. This would be good enough in cutting stray light.
These hoods can cause viewfinder blockage. However an accessory finder can be used. The finder in this case will be high enough to clear the hood. With long lenses, extra finders are used anyway.
**rectangular hood courtesy of Jefjac
3 Responses to What Lens Hood to Use for Industar or Jupiter Lenses?
Michael Ong
July 28th, 2009 at 08:03
Thanks Jay, very useful.
Tamas Kovacs
August 5th, 2010 at 23:34
I own a Jupiter-11 (4/135 mm) telephoto lens in M39 mount(from 1958). It should be relubed. But I could not remove the optical block. I tried to unthread the lens block with rubber mat and even a nutcracker, but without any effort. I did not dare to use more drastic tools, e.g. chuck or clam. They can damage the lens. Does the optical block tighten firmly? Or it has an RF thread? What kind of tips do you have?
33dollars
August 21st, 2010 at 04:05
Hi, any idears about the Ø48 push on lens hoods for Fed Micron, Fed Micron 2, Fed 35 & Fed 50 ?
индустap-81 2.8 / 38 lens also accepts a Ø46 filter.
I’ve seen them around & would like to know about the cut out. Whats that for?
Thanks for any info.