More Evaluation of a move back to APS-C

My last post, just a few days ago, discussed one of the obstacles to exclusively using crop sensor bodies being the lack of quality ultra wide options. Well, I noticed a local Craigslist ad for an EF-S 10-22mm f/3.5-4.5 USM lens. I have owned one of these in the past when I had two 7D bodies but sold it when I obtained my 5D Mark III body.

This lens is a bit optically inferior to the cheap plastic 10-18mm STM lens but I'm willing to give up some image quality for build quality, full time manual focusing and some gravitas. So, I picked up the used 10-22mm lens for less than what a new 10-18mm STM lens retails for. I tried to do some testing today in mid afternoon and here are some results.

10mm (16mm eq.)

10mm (16mm eq.)

10mm (16mm eq.)

10mm (16mm eq.)

10mm (16mm eq.)

10mm (16mm eq.)

18mm (28.8mm eq.)