When I transfer the contents of my SD card from my D3200, onto my computer (Mac) and stream through to AppleTV I have black edges on the TV screen. I've tried changing the TV screen settings but to no avail. Currently I am post editing every shot using "Photos for Mac" and changing the aspect ratio either to 16:9 for landscape or 4:3 for portrait. It's extremely time consuming. Is there a setting on the 3200 which I've overlooked or is there a method I should use to avoid post editing? I'd really appreciate any assistance as I've tried numerous websites for solutions as well as other avid photographers. Thankyou in advance. Regards Paul.