1Ds Mark IV starting to surface?

On the subject of canon rumours, have you noticed that when you allow that tweetmeme app to post on your twitter account, you've suddenly got spam all over your page? I did! Had to change my password, then I reallowed it to test, and sure enough :D
 
Just read on that site that the 5D3 is rumoured for Q1 2012 as well....hmmm, I wonder what Canon are upto! :)
 
Exactly

Billboards, large posters. It would be competing with £10,000 Hassleblads and other large format cameras for studio work.

It also allows for some greater latitude when cropping down at size. Whilst the extra won't be used by amateurs most of the time, the new camera is hardly designed for amateurs! It won't really be competing against MF though, but will have applications where a clunky MF kit is impractical and/or higher shooting speeds are required.:)
 
That resolution may be ok now. Before I couldn't think of many lenses that could resolve the detail. However, after buying a 135L and a 70-200 f2.8 IS II, 32MP would be nice. File sizes are every increasing on those raw files though.
 
Billboards, large posters. It would be competing with £10,000 Hassleblads and other large format cameras for studio work.

Except on a 35mm frame you are well beyond diffraction limits above 20 odd MP let alonw not even the best primes stopped down will be sharp enough. The 24MP D3x is noticibly harder than the 21Mp ID2MKII to get optimal results, I hate to think of the jump to 32MP. Secondly, the difference between 24MP and 32MP is barely visible even if you could break the laws of physics. A 32MP sensor will be about 6900x4600 compared to a 24MP sensor of 6000x4000, or about 15% more linear resolution, about the absolute minimum that would be percievable to a well trained eye viewed on a good screen. What will be more important is the ultimate signal to noise ratio, dynamic range etc. I would much rather have 24 super clean pixels with more DR than 32 million lousy pixels that every lens makes looks soft . Of course, one can also downsample to reduce nosie, diffraction and lens softness effects, but at a cost of reduced write speeds, sensor readouts, increased memory usage and post processing time. The sensor cost will also increase.


As an aside, the Nikon D4 should be 18MP which I reckon is the sweet spot fo Full Frame now for most uses. The D4X whcih will be announced next year will boast 32-40MP.
Unforunately the D800 is looking to have a 24MP sensor derived from the D3X rather than the 18MP from the D4.
 
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