09-11-2017 01:17 AM
At the bottom, below the wheel on the back is a triangle. That is to view your last shot. View your last shot with this button then press "DISP" to cycle through the various photo analysis (histograms).
I understand your frustration. That has happened to me a couple of times and I've had to go through the whole remember what button to hit to turn it off. Also, as I recall, the T3 has the "DISP" button right where your thumb rests while holding the camera.