Happy with 28mm f/1.8?

arty H wrote:

The Tokina MF is a large clutch, not like other lenses, except the Tamron 90 mm macro. It doesn't move Unless you pull it to the MF position.

The lens is solid, that is for sure. Once thing to be aware of is that color rendition is different on non-Canon lenses.   This is hard to describe , but images from Sigma or Tokina can have a slightly different color balance.