Exclamation symbol

When looking through the viewfinder in my 6D there's an exclamation symbol next the battery symbol, anyone know what it means?

2 REPLIES 2

See page 313 of the User Manual.

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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

Thanks!

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