I've had a 7D literally on all day and never had a problem with the warning alert coming on while it was in a housing. I have had a problem topside though when shooting for prolonged periods in very warm conditions and my 7D has been sent back to Canon twice since I bought it with sensor problems. Personally I think I was just unlucky but both times the guy in the shop said it was sensor burn..... Having said that there are other issues higher up on the ladder that would effect my decision on using a 7D underwater. Hope this helps
Cheers, Simon
Hi Simon, Ive started underwater vidoe again and Im looking to upgrade my Sony Tr 950 3ccd to DSLR, from what I have read, the 7D looks like the way to go, especially with the Tokina 10-17 lens. I cant see a better value alternative, but interested in your comments as to why you wouldnt use the 7D underwater?
Thanks
Hugh