Then, along comes the EOS M5 and M6. I was reluctant to take the plunge due to slow-focusing issues I'd read about. I wanted the smallest possible camera but very high quality. Then, I read that the M6 has a nearly identical APS-C sensor to the new 80D - which has even better dynamic range than my 7D Mii. Then, I thought "but it doesn't have a viewfinder." Well, heck, I take photos all the time with my phone. So, I ordered the M6 with the 15-45 kit lens. I took many test photos. The camera is very easy to work with and I was pleased with the results. Compared to my previous Canon glass, M-lenses are tiny, but they're sharp. Plus, any small faults can be corrected in software. I don't really miss the viewfinder but there is one available to attach to the hot shoe. The controls are intuitive and the touchscreen is a joy to use. Manual exposure is easy to dial in quickly.
Now back to the T7i, it has Canon's latest DIGIC processor inside of it, think it is up to 7 now. The auto focus system is a dual pixel AF with phase detection which is great. My old T3i didn't have phase detection, and the way that helps is that when something is out of focused, the camera can now tell which direction it needs to go. Before the camera basically had to guess and if it got less focused, it'll then go the other way. So sometimes it'll go the right direction the first time, other times it'll have to go both ways before it finds the right direction. This sometimes meant getting the subject focused took quite some time. With this new dual pixel with phase detection, it not only knows which way to go, but it also locks into focus much quicker than before. Phase detection has been around for a few years, but the dual pixel CMOS AF is actually new, even to the pro-grade cameras, and it made its way to this prosumer grade camera which is really nice.
The T#i line is what they call a "pro-sumer" line, which is basically between a consumer line camera like a very basic DSLR and a professional DSLR camera, thus the term "pro-sumer." Typically what this meant is an DSLR with an APS-C sized sensor, decent resolution, and some hand-me-down professional features of pro-grade cameras from a few years ago. For this reason, sometimes it's not worth upgrading from one of these cameras to the next until at least a few generations have past (meaning if you have a T5i, it's not really a giant leap forward to upgrade to a T6i). However, the T7i is somewhat different. When I was doing research on what features it has and what it is missing compared to the pro-grade DSLRs that are considered "current" right now, I was surprised to find very little. The main differences really is that the pro-grade cameras have the LCD display on the top that would display all of your relevant camera settings, and then a few of them would also sport a full-frame sensor. Other than that, the differences are very minor. Something like maybe 1 or 2 frames less in burst mode or something like that. Nothing that would really jump out at you and make you regret not stepping up to the professional grade equivalent (Think it would be the 77D?). It actually has pretty much all of the big features of even their current pro-grade DSLRs, making the T7i probably one of the best prosumer DSLRs to buy.