Canon EOS M EF-M 22mm STM Kit Instruction Manual page 264

S Resize
About Image Sizes
The image size displayed in step 3 on page 262, such as [***M
****x****], has a 3:2 aspect ratio. The image size according to aspect
ratios is shown in the table below.
The asterisked image-recording quality figures do not exactly match the
aspect ratio. The image will be cropped slightly.
Image
Quality
3:2
3456x2304
4
(8.0 megapixels)
2592x1728
a
(4.5 megapixels)
1920x1280
b
(2.5 megapixels)
720x480
c
(350,000 pixels)
264
Aspect Ratio and Pixel Count (Approx.)
4:3
3072x2304
(7.0 megapixels)
2304x1728
(4.0 megapixels)
1696x1280*
(2.2 megapixels)
640x480
(310,000 pixels)
16:9
3456x1944
(6.7 megapixels)
2592x1456*
(3.8 megapixels)
1920x1080
(2.1 megapixels)
720x400*
(290,000 pixels)
1:1
2304x2304
(5.3 megapixels)
1728x1728
(3.0 megapixels)
1280x1280
(1.6 megapixels)
480x480
(230,000 pixels)