I bought the 10-22 when a neighbor was going to be moving to a retirement home, and I took interior pictures for him and gave them to his realtor, also a friend and neighbor. The realtor thanked me with a gift card for an Indian restaurant and hired me to do interior shots of other houses. I think I broke even on Schedule C, so probably also in real life, and I still have the lens. The realtor retired several years ago, and I was stiffed by a retirement home in Salisbury, NC, for whom I did a shoot, so I never made any more money off of it. No regrets, since I'm happily retired and not rich, but not insolvent. For now, I would get out the Rebel and the 10-22 if I needed anything wider than the 24mm side of the kit zoom on my 6D2. That hasn't happened, so I am not itching to get the 16-35mm f/4 too quickly, but I do see it in my future, and there is no motivation to get any EF-S lenses any more. So I'll save my $189 to apply to the 16-35. But that really is a bargain for that lens for anyone still using APS-C cameras.