Topics

1

Lenses / Performance of teleconverters between new cameras and older lenses

« on: April 24, 2012, 01:21:05 PM »

I need to tap into the wealth of knowledge from the canonrumors gang.

I will be doing lots of shooting later this summer with the new 1Dx and 5D3 (hopefully) with the 400mm f/2.8 MK I lens.  I expect that these cameras will easily be able to drive the autofocus on this lens. 

My question is with teleconverters.  I have the 1.4x II and figure that will provide excellent results.  Is there any reason to think that the 1.4x III will perform noticably better than the 1.4x II with the older lens?  I could see having the 1.4x II between the newest lenses and bodies not being preferable.

Thanks for any help.

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Lenses / Canon 200-400 1.4x for Olympics?

« on: April 20, 2012, 04:23:07 PM »

Any rumors, rumblings, hints or thoughts on the 200-400 being available for the Olympics?  The London Olympics that is....
I would hope Canon is doing everything in their power to get the 200-400 and 1Dx out soon.

3

EOS Bodies - For Stills / Canon 1Dx vs 5DIII vs Nikon D4 Processing Power

« on: March 11, 2012, 05:03:20 PM »

I have read several comparisons between these cameras questioning autofocus capabilities.  One thing that doesn't get much discussion is the processing capability.  With the 1Dx having dual digic 5+ processors, does that give it the raw computing power necessary for higher performance autofocus systems and lens control?

There has also been much debate about how much more added value the 1Dx has over the 5DIII, but I believe the autofocus will be much more accurate in the 1Dx over the 5DIII because of the double processors. But then I though, since the 5DIII shoots at half the frame rate, does it only need half the processing power?  Autofocus performance may be the same.

Then there is the D4, with it's single processor.  Will the 1Dx outperform it based solely on it's processing power?