While it may appear so from a retail consumer standpoint, I don't think Canon is lagging behind in tech from an IP and R&D standpoint. The thing is they make the sensor themselves, and the fabs and tooling is super super expensive. Canons MO is to extract as much profit as possible from a pre-existing process before moving over to something new. They already have BSI tech.. they already have the means to create a 100MP sensor as well as compete on AF (for video I think dualpixel AF is already ahead of the competition). Canon has diversified product lines and doesn't want to upset its Cinema EOS lineup too much by offering "too many" features. Sony, being the newcomer has sunk a ginormous amount of capital into fabs and tooling to differentiate itself in a saturated market and it has worked for the amateur and enthusiast crowd. They have a few weaknesses, specifically ergonomics, color science, the smaller E mount diameter, and a less rugged body for professional use (compared to 1DX or D5). It will be interesting to see how they tackle the new challenger..
>but they've made huge leaps in R&D for large telephotos with usable fresnel lenses at 300mm and 500mm focal length.
Canon already has this tech, as they showed in their 400 DO II, which is a freakishly awesome lens.
>his too has been challenged lately by Sony and their partnership with Zeiss
Hmm, have there been any sony-zeiss lenses since Sony started their GM lineup?
>but they've made huge leaps in R&D for large telephotos with usable fresnel lenses at 300mm and 500mm focal length.
Canon already has this tech, as they showed in their 400 DO II, which is a freakishly awesome lens.
>his too has been challenged lately by Sony and their partnership with Zeiss
Hmm, have there been any sony-zeiss lenses since Sony started their GM lineup?