Quote Originally Posted by Mike Kovacs View Post
I use tubes (bellows) and close-up lenses. <snip>

Secondly, there is no light loss from extension using the tubes. There are many times where I would simply not be able to make a shot in the field due to subject motion, were I to lose another stop or two of light from extension tubes and/or bellows.
Huh? At what magnification is there no loss from gaining magnification by adding extension? Did you mean to say there's no loss from using diopters?