CON ONG

Canon 5D

The most accurate this lens when I came across it was just a piece of glass about 4.5cm x 7cm in diameter.

no brand, no focus, no aperture, no mount to connect...

I was curious, trying to assemble it into a simple lens to connect the camera and take a test shot...

And the result is this... Please comment on its photo and look forward to sharing technical knowledge with those of you who have similar interests.

Done