« on: February 11, 2013, 07:22:56 AM »
I'd suggest that Canon is deliberately yielding the lower-cost long glass market to third parties that are targeting the xxD and xxxD owners who may not realize the high demands upon glass that come with such high density sensors.
For the camp who predicts that the 7D2 will truly be a "mid-level" camera (meaning priced near the midpoint between a rebel and a 1DX), the expression "Future of Pro APS-C will change" means that the 7D2 will be a serious sports/wildlife Body. Such a camera could be evidence of a Canon strategy for serious/pro APS-C wildlifers to either rent or own the long L glass that meets the build quality, resolution, and weather sealing requirements of such a use case, as the reach/cost advantage is already realized in the form of the crop sensor itself.
The increased demands of the higher density sensor would be incentive enough, for those who are aware and who care, to use L glass, knowing that they are taking advantage of the best portion of the image circle as well.
If the 7D2 really targets the pro or semi-pro wildlife segment, then in my opinion Canon may assume that the 7D2 owner has a FF body as well (such as a 6D), or aspires to one, in which case there is no incentive to invest in EF-S glass at all. Moreover, accepting the wildlife specialized use case, the "single body" 7D2 owner may in fact be content with covering the WA and UWA ranges without L build quality and weather sealing, i.e. with the fine lenses available today such as the 10-22.
You might be quite correct in that. But there ought to be some room for a EF-S telephoto lens with the inherent advantages of weight reduction from the shortcuts the lensmakers can take when designing for a smaller image circle. I am almost certain there will be something like this coming for the M-mount, and I think a conversion to EF-S would be easy, as the glass is for the same sensor size, and the difference is in the mount and flange distance as I understand it.
Anyways, a 300mm f2.8 for EF-S, at the weight as the 300 f4 or less? They could get away with a weather sealed plastic build (something like the 17-55 2.8 ) if done properly, and the price is right. (Yes, dreaming now, but...)