Leitz Elmarit-R 35mm f2.8 (3 cam) brand_Contax The Spektrem Effects Magic Mirror

The Spektrem Effects Magic Mirror is a semi-reflective mirror that can be used to create dreamy single-shot multi exposure images

but the filter is good

there was this Nippon Kogaku 8

4 is a well made original bayonet series lens for Pentax K-mount cameras

It works best with low-speed film

Leitz Elmarit-R 35mm f2.8 (3 cam) brand_Contax The Spektrem Effects Magic MirrorThe Leitz Elmarit R 35mm f2. 8 (3 cam) is a fast, all metal lens for Leica R mount cameras. In excellent cosmetic condition, with minor paint and finish wear; this one's just come back from service, with smooth focusing and good diaphragm action. Glass has minor haze marks which will not affect imaging. Includes hood which has a few small dings plus front and rear caps.