Roger Cicala investigates accuracy of lens adapters

There’s a world of difference between lens testing, and real-world shooting with adapted lenses on mirrorless cameras. For one you need absolutely perfect alignment, for the other, you don’t.

It’s probably worth bearing in mind that teleconverters and extension tubes will necessarily show the same effect, but that doesn’t stop anyone using them. In fact if you look really closely, you’ll probably find that all of your lenses appear to point in slightly different directions – and it simply doesn’t matter.

Source Article from http://www.dpreview.com/news/2013/09/30/roger-cicala-investigates-accuracy-of-lens-adapters