So you just bought a shinny new lens for your mirror-less or DSLR camera and want to find out if the lens is performing as expected, what would you do?
Most people will mount it on the camera then take some photos to check at various zoom level after downloading them to a computer. There are a lot more can be done to example a lens. Roger Cicala of Lensrentals.com posted a blog post a while back. If it is news to me, it may be news to you as well. Check it out here.