Modern small format lenses do work well on large format cameras when reverse mounted and used for micro photography. For example, a 50mm lens from a 35mm camera used thus on a 4x5 camera with 200mm bellows extension provides 4X magnification on the film with good illumination and sharpness to the corners. If that lens works well when focused at 200mm on its original camera, it will work well when used as described. The effective f/number will be much smaller, though. This should be measured from the front of the camera, not calculated, as it may be different than expected. Depth of field will be very small. Stopping down more than a few stops to improve this may quickly limit sharpness due to diffraction.
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