https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/R8-Battery-Drain-Measurements/m-p/581052#M139606 <P>That was interesting, thanks.&nbsp; I was surprised at how little the various brightness settings affected the power drain - only about 10% between the dimmest and brightest setting.&nbsp; I also found it interesting how the much smaller viewfinder draws more current than the rear screen.&nbsp; I would not have expected that.&nbsp; The fact that focus motors and shutters draw about the same as the screen wasn't too much of a surprise.&nbsp; I would expect those to be big power users.</P> Thu, 01 Jan 2026 17:45:45 GMT SignifDigits 2026-01-01T17:45:45Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/R8-Battery-Drain-Measurements/m-p/580868#M139573 <P>This video shows the R8 battery drain under different conditions:</P><P>&nbsp;</P><P><A href="https://www.youtube.com/watch?v=uMW4_gFudaY&amp;t=23s" target="_blank" rel="noopener">https://www.youtube.com/watch?v=uMW4_gFudaY&amp;t=23s</A></P><P>&nbsp;</P> Wed, 31 Dec 2025 03:23:41 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/R8-Battery-Drain-Measurements/m-p/580868#M139573 noirfilm 2025-12-31T03:23:41Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/R8-Battery-Drain-Measurements/m-p/581052#M139606 <P>That was interesting, thanks.&nbsp; I was surprised at how little the various brightness settings affected the power drain - only about 10% between the dimmest and brightest setting.&nbsp; I also found it interesting how the much smaller viewfinder draws more current than the rear screen.&nbsp; I would not have expected that.&nbsp; The fact that focus motors and shutters draw about the same as the screen wasn't too much of a surprise.&nbsp; I would expect those to be big power users.</P> Thu, 01 Jan 2026 17:45:45 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/R8-Battery-Drain-Measurements/m-p/581052#M139606 SignifDigits 2026-01-01T17:45:45Z