Excerpt: I have been using this card with Nikon D800 for 3 month and it does the job, but every 50-100 shots my D800 "freezes" while writing onto the card for 15-30 seconds. You can take more pictures while the camera is busy writing, but you can't review them until it finishes and that is very annoying. This happens even at Medium resolution! No errors so far. That's why I gave it 3 stars.
Excerpt: I use this for DSLR video on a 7D. I have several transcend cards of various sizes and have never had a problem with any of them. I mostly shoot corporate video. It's nice to have a couple of these 64GB if you are shooting a ton of video in a day.