See the Switching Display Modes section on page 102 in the User Manual. You can cycle among having the full image shown by itself, or be smaller along with varying amounts of other information.
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Ricky
EOS 5D IV, EF 50mm f/1.2L, EF 135mm f/2L, 600EX-RT (x6), ST-E3-RT
EOS C70, RF 24-70 f/2.8L IS, EF-EOS R 0.71x
