Perhaps there's a problem with your camera. But I suspect what you are seeing is normal. In low light conditions, the camera will illuminate the autofocus point(s) in red. A side effect of that is that the red light "spills" into the rest of the view...
Do you have the latest version of EOS Utility installled? I seem to recall that there were problems with tethering using EU on Yosemite when it first came out, but was resolved with some updates to EU. Looks like the current versions are 3.1.0b and 2...
Agree with everything Tim said above. And here is a page showing performance results of a number of memory cards in the 7D Mark II: http://www.cameramemoryspeed.com/canon-7d-mark-ii/fastest-sd-cf-card-comparison/ Cheers,Bill
Yes, the DPP 3.14.x that comes on the 40D Solutions Disk download should work with your 20D.So I'd suggest downloading the new solutions disk from the 40D page. It will ask for your serialnumber. The 20D serial should work. But if it doesn't you can ...
