just sold my 7D. :-)
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One reason for the big whites' high resolution property is that lens resolution is a function of diameter; a larger diameter lens (for a given focal length larger aperture lenses have larger diameters) will resolve more than a smaller diameter lens assuming similar correction for lens aberrations. See http://en.wikipedia.org/wiki/Optical_resolution and scroll down to lens resolution. There are other aspects of resolution as well that are discussed in the article. Lens aperture is just one part.
With the latest telephoto, I would guess that Canon is done with M lenses.
Do you think they are going to kill off the M line?
And yes, there is no technical reason why canon could not ewuip the 400/5.6 with IQ as is with a current day 4 stop IS with 3 modes (full, panning, tripod sensing) and sell it at USD 1999,-
Its only freaking "marketing differentiation".
I might jump at this if it's fully usable wide open. Note that it must completely blow away my 100-400 @ 400mm.
Wow, I was a bit surprised for a minute to see that quote attributed to me.
I don't think a 400/5.6 IS will cost $ 1999, unfortunately
There is no reason why the 400F5.6, in an updated version, can't have the same IQ as the 400F2.8. It's that full stop faster that you pay so much for.
For example, the 24-70 F4 and the F2.8 are similar in IQ, but twice as much for a half stop.....
The 70-200 F4IS and F2.8IS are similar in IQ, but twice as much for a half stop....
by that logic, I would expect a 400F5.6 similar in IQ to the 2.8.... but around 1/4 the price. Realistically though, expect 1/3 the price...
can you advise them that CC licks balls please?
Unfocused, you should repost that wonderful response on FM, DPR, and everywhere else the OP went trolling. Pure gold!
This is the only forum I participate in. But, at your request, I decided to register and repost in Fred Miranda and DPReview. Probably gets me banned, but oh well.