Canon EOS REBEL T7i Instruction Manual page 151

The table below shows the aspect ratio and the number of recorded
pixels for each image-recording quality.
Image
Quality
3:2
6000x4000
3/1
(24.0 megapixels)
3984x2656
4
(10.6 megapixels)
2976x1984
a
(5.9 megapixels)
2400x1600
b
(3.8 megapixels)
The items marked with an asterisk do not exactly match the indicated

aspect ratio.
The image area displayed for the asterisked aspect ratio may be slightly

different from the actual image area. Check the captured images on the
LCD monitor during shooting.
3 Changing the Image's Aspect RatioN
Aspect Ratio and Pixel Count (Approx.)
4:3
5328x4000*
(21.3 megapixels)
3552x2664
(9.5 megapixels)
2656x1992
(5.3 megapixels)
2112x1600*
(3.4 megapixels)
16:9
6000x3368*
(20.2 megapixels) (16.0 megapixels)
3984x2240*
(8.9 megapixels)
2976x1680*
(5.0 megapixels)
2400x1344*
(3.2 megapixels)
1:1
4000x4000
2656x2656
(7.1 megapixels)
1984x1984
(3.9 megapixels)
1600x1600
(2.6 megapixels)
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