Quote Originally Posted by Helen B[i
That's a new one on me. How are you measuring or judging 'brightness'? There may be a tiny difference because of the slightly higher light transmission of a simple lens compared to a lens with more glass and more air-glass surfaces, but one is unlikely to be 'much brighter' than the other. [\i]
Thanks for the responses. I am taking a photo class now and the teacher said that since the lens elements are closer to the film plane in a rangefinder than they are in an SLR, you get "more light" using a RF at 2.8 than you would using an SLR.

Confused me too and am still confused...