Does anyone know of any lenses that have a focal length less than 20mm, Ive just got hold of a 0.5x wide angle adapter and it gives pretty good results on my 18-55mm canon kit lens at 18mm (not as good as a real fisheye, but a lot cheaper).
Only problem is its pretty heavy and i dont really like having it attached to the rubbish plastic kit lens, esspecially as this is my only wide zoom at the minute.
Im looking for something cheap and metal, like an old carl zeiss, with an m42 mount or similar with an 18mm or less focal length, does anyone know of any that exist or even better any that might be available for sale?
Many thanks guys and gals!



