I have quite a few enlarging lenses and I use them with a bellow to shoot macro. My question is do I need to reverse the lens for better quality. Right now I mount the lens to the bellow with its 39mm thread so the side that normally face the negative would face the film and the side normally face the paper would face the subject. Do I gain any sharpness by reversing it? I don't need more magnification as I have enough with the bellow.