Lens magnification tests
I've been experimenting with reverse mounting lenses on 160mm extension tube. I took shots of a Lego block.
From top to bottom we have.
Pentax-A 100 F2.8 (no extension tube)
SMC Takumar 55mm (reversed)
SMC Takumar 35mm (reversed)
SMC Takumar 28mm (reversed)
DA 15mm (reversed)
The magnification ranges from 1:1 to approx. 1:12