Also remember that the limits of acceptable resolution are about to go up. As I mentioned in a previous post, most of Canon's lineup can crop 64-pixels off the width of an image before it no longer fills the screen, and thus becomes unsuitable for a desktop wallpaper, on a new 5K iMac. What was previously considered pixel-peeping suddenly became an acceptable "threshold" for your CoC, when making a desktop wallpaper. Who saw that coming? When targeting high-res wallpaper, your hyperfocal range will shrink, but that's not an effect of the sensor, or it's resolution, but an effect of the target... a super-high-res target that will be viewed up close needs a much smaller CoC.

These new 5Ds cameras should fix the "uncroppable images" problem, and perhaps end up with extra longevity and desirability as a result. I may have to consider ditching the 7D2 and picking up a 5Ds before high-res displays become common place. Imagine when a client asks you for a 5K photo and you have to say "I can't do that." Ugh. They won't be back. It won't be too many years before my not-yet-3-month-old camera becomes 'undesirable' because it doesn't have enough resolution to even fill the screen. Or perhaps the 7D2 is my backup camera... I should sell the 7D and 1Ds2 while I can...