simpler english: extension tube works by enlarging the image circle of your lens projected on the film plane, hence it's macro + light loss + focus limited. hence u shd mount it on the body since it affects the film plane.
tc works by magnifying the image of the lens, but only works in more or less fixed position, hence it must be mounted immed behind the lens.
what was so hard to understand?
sigh... nvm.. since tweek has verified the combi...
Originally posted by Silverelf Supposing I used one of the more 'uncommon' films.. eg 1600, 50 etc and sent it to my neighbourhood shop, would it make a very big difference than if I sent it to a colour lab or something like that?