Canon Community

Hello, I have a 100-400 5.6 ii, it worked fine 2 days ago but now all of a sudden it won’t autofocus.  I can still manually focus but with autofocus I hear the motor and it searches for focus but nothing.  I tried it on my 5d4 and 7d with same result...

I'm using a prograf pro 300, was printing fine then I went to bed.  I think I accidentally left it on and now it is not connecting to my computer.  I reset the printer and it is now connected to wifi but I'm not getting any connection between compute...

Hi, I'm printing with the prograf-300 pro.  In photoshop I set my canvas size to 8x10.  My paper is set to 8.5x11.  I put a border on the canvas so I could see exactly where to cut my image at 8x10.  For some reason every time I print it is coming ou...