Bill Hilton wrote:

[...]

If you aren't impressed by the numbers then look at the sidelines of
major sporting events and see how many Big White Lenses you see
compared to the black Nikons ... fourty years ago Nikon supposedly had
90% of this market and now they probably have 20% of it, if that. The
trend is pretty clear.

Besides, while it might be of passing interest, unless full frame
sensor is required it's not really relevant. Nikon performs as well as
Canon, and vice-versa.

I would agree with this for the consumer market but at the high end
market for sports and wildlife photographers it's clear that Canon is
ahead because of IS in the 500 and 600 f/4 lenses (Nikon hasn't been
able to migrate VR to this class lens yet) and because of the full
frame bodies.

[...]

I'm a Canon user and yet I think this trend is worrisome. I
think it is really important for Canon to have serious competition.
So I hope that Nikon gets its act together quickly.

There is certainly room for two top camera manufacturers.

---- Paul J. Gans