A friend of mine recently came across some M42 lenses that were being tossed out. He passed them along to me, thinking they might be of use. (Thanks Jesse!) In the box were a pentax takumar 35mm f/3.5 and a 135mm f/3.5. I’ve spoiled myself with fast primes for my cameras, so this is a bit of a departure from what I’d normally use. It’s a 70mm focal length equivalent with the 2x m4/3 multiplier.
I used my M42/C-mount to micro four-thirds adapter with a 9mm and 16mm extension tube to get the flange back distance to match that of a 35mm lens.
Photos of the takumar 35mm f/3.5 on the GF1:
The lens works alright on the camera. It’s not nearly as bulky as the 8mm peleng fisheye. Focusing worked fine and the manual focus magnification helps a lot. With longer lenses (I tried the 135mm f/3.5 for a bit), I’ve noticed that the magnification isn’t very useful because of camera shake.
Photos with the 35mm lens look fine. The effective focal length worked pretty decently. Here are some samples: