>> In my experience [mirror lenses] seem to lack contrast. > Hmmm. I don't really need, that.
I think that catadioptric lenses will always suffer a little contrast loss, due to the central obstruction of the secondary mirror. However, in my experience, this varies a lot from mirror lens design to mirror lens design,and the loss of contrast can sometimes be small. (There's more than one way to [design] a "cat".) Fred
