Is there any difference between using a full manual lens for Nikon F-mount or using lens for another mount (say m42) with an F-mount adapter?
I'm looking for a very cheap (~$50), fast (large aperture), full manual (non-CPU) lens for my Nikon D7000. After searching on eBay, I found that the same lenses (e.g. Vivitar 135mm f/2.8) are cheaper ...
I bought a Vivitar 70-210 Macro Focusing Zoom lens for my Nikon D3000. After using it for a while, I've noticed that a lot of my shots are slightly out of focus - a side effect of my inexperience with ...