OCT-18 lens to Canon EOS (EF) camera adapter for zooms 37mm clamps two of these can be

two of these can be used with the filter adapter screwed into the front and the filters mounted on the 3x afocal adapter so that filters can be changed without threading and treadling the filters

Material - anodized aluminium alloy

Weight - 6 g

Such setup is great for portrait and macro shots

I don't know exactly why

OCT-18 lens to Canon EOS (EF) camera adapter for zooms 37mm clamps two of these can beThis adapter can be used to install some LOMO (Lenkinap, KMZ) lenses with OCT 18 mount (for turret Konvas) onto cameras with EF mount (Canon EOS). It allows infinity focus if you lens can physically fit it (read details below). This is simple adapter it holds mount of the lens so it can't rotate. This means that it fits zoom lenses perfectly (Foton, Lenar, OPF series). But most of OCT 18 primes needs to rotate in the mount in order to focus properly.