I purchased a gopro hero 3+ black edition in the states when I went on a trip recently. I then read about the image sharpness issues in this model. e.g. see http://www.rcgroups.com/forums/showthread.php?t=2011658
Thank god I read these before opening it. After reviewing a number of images, its very obvious that overall images are much softer than on the 3 black. Apparently, gorpo have made the focus closer, so anything in mid and background are now slightly out of focus. This is great for ego surfers who point the camera at themselves, but for those who like to point the camera forward (on my motorbike and car), the loss in quality is noticeable, especially in stills. The last straw was that the reason I bought it was because it was advertising "33% in crease in sharpness" when overall there is a significant DECREASE in sharpness across the image as a whole.I sold the camera before opening it. Almost got my money back. Now ill wait for a cheap second hand gopro 3 black.
The question is, is the 6D a step up from the 5D MkII? The Mk III is way too expensive for a minor increment, and probably has a similar exposure strategy which doesn't work for me. 6D has better ISO range at least on paper. I never use anything but the center AF point, so the number of points is irrelevant. I would never use the WIFI or GPS. loss of CF is a pain, but purchasing new SD cards is not too expensive.
I have a 5D MK II and hate the unpredictable exposure (always 2/3 of a stop under or over) and focus (3 out of 4 shots are wildly out of focus, even using L glass, f11 and 1/500s+). My 40D is a pleasure to use by comparison, and takes much better shots most of the time. I never use the 5DII for important stuff like weddings. Ive been shooting canon for 25 years, but the MKII exposure has made me think about switching to Nikon. Perhaps the 6D is the answer so I dont have to sell my L lenses.