Is it time to move on from my T4i

From what I recall reading, the dynamic range is better, but you would have to read the reviews to determine the extent. It seems the dynamic range is improved after I view the photos on the computer but maybe that's hopeful thinking on my part. I haven't done any tests between the older cameras and latest camera with similar conditions to know for sure.

I didn't think getting another 6 megapixels would make that much difference, but when cropping a little it is nice that there's more pixels to work with. That's another plus also.

If you view my Show Your Snaps photos, you will see a combination of photos from my older cameras and new camera. You should see that in good lighting without the need to crop, that either one of them will be OK. I find the greatest dramatic improvement (at least from my viewpoint) is the high ISO capability. There's other improvements like now we can adjust the exposure compensation when using autoISO in manual mode. I don't know if you have that in your Canon T4i (650D) camera.

For example, see the following image at ISO500, F11, 1/640, 55mm FL and +.33 exposure compensation. We can't use 1/3rd incremental ISO values without using autoISO with the Canon T7i (800D) camera (as far as I know), so you know that is how I did it. Is the dynamic range better? Can that be seen here? I don't know but I did not adjust any of the lighting with this one. I straightened the horizon and resized with IrfanView.

Here is another sample at ISO8000. It looks like it was taken during the day, but it was actually taken at night. The lighting is from a large lamp on the left side.