User Activity

While connected by USB to a computer, my refurbished EOS R7, purchased from Canon  9 months ago, just stopped responding.  I have replaced the battery, twice.  Not much else to say.  On the offhand chance this is something I can deal with, I am posti...
I am using this camera on a microscope, tethered to a computer.  Lately, I have noticed an uneven dark bar along the bottom edge of the images.  The darkest  bar is at 1/4000s, the fastest shutter speed with this camera.  Slower than 1/800 or 1/1000 ...