see http://www.smu.edu/~rmonagha/bronfe.html on fisheye adapters and links; also http://www.smu.edu/~rmonagha/third/wierd.html on wierd third party lenses and adapters... ;-) the 0.18x fisheye adapters correspond to circa 180 degree circular image on film using 50mm prime lens, to produce a 9mm equivalent fisheye effect the 0.42x superwide or "semi-fisheye" adapters produce the equivalent of a 21mm focal length on a 50mm prime lens, but with considerable distortion some good fun examples of 0.42x adapter use can be seen at greg erker's page at http://www.angelfire.com/ca/erker/deitz.html comparisons with various lenses and coverage and vignetting etc... while the edges are less sharp and contrasty versus primes, you can have a lot of fun for low $$ and decide if you really need a circular fisheye or ultrawide enough to justify the extra investment in prime lenses... regards and happy holidays to all - bobm * Robert Monaghan POB752182 Dallas Tx 75275-2182 [EMAIL PROTECTED] * * Bronica 6x6 medium format: http://www.smu.edu/~rmonagha/bronica.html site * * Medium Format Cameras: http://www.smu.edu/~rmonagha/mf/index.html megasite*
