Canon R7 wi/RF 100-500 keeps changing shutter speed while in Manual

[mikellherrick]

I've been noticing that while shooting (often in low light) my R7 will automatically change my shutter speed to 1/125 even though I have manually selected 1/400 typically. ISO is always on Auto and aperture at widest allowed for conditions.  Is that normal?  Is it because the camera thinks I can't get a good shot shooting that fast?  If I move my frame around a bit...or reset the manual speed back to 1/400...it will usually allow me to use that speed.  It is annoying because I'm also shooting in continuous mode (mechanical) and find I'm getting overexposed or blurred images when this happens. 

[Waddizzle]

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@mikellherrick wrote:

I was on the verge of a reset...and I did take a picture of some of the settings menus already...I knew that would be helpful...but I haven't pulled the trigger yet.  I updated firmware because I was behind a couple of versions...thought that might help...but not likely.  I'm sure I'm just going to reset when I have a bit of time to do all the adjustments.  Right now it's a minor annoyance but I can't let it continue.  We'll see if a reset does the trick. 

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Save your current settings as a custom shooting mode.