« on: August 05, 2012, 12:39:23 PM »
I'm still struggling with this myself. I own both and am going to sell one. I can see the advantages and disadvantages of both, in real life. The 5D3 can shoot relatively well at all ISO's in it's reasonable range. The 1Ds3 cannot. I'd argue it's useless above 800 or 1000. The 5D3 can shoot well into 6400-8000 and look just fine. However, the 1Ds3 is the ultimate landscape camera. You will not get the IQ on landscape shots with a 5D3 that you will with a 1Ds3. I don't know why this is, but it is. The distant background with the 5D3 gets fuzzy/meshy whereas the 1Ds3 is still so clear all the way to the back of the scene, even at f/22.
Overall, well-rounded camera: Get the 5D Mark III
Landscape, daytime, low ISO shooter only: Get the 1Ds Mark III
The other issue many will face, is that when they purchase the 1DX, that may be able to replace the 5D Mark III's spot. Isn't that interesting? Then you'd have kits consisting of only the 1DX and 1Ds Mark III. This tells me that in all reality, the 5D Mark III is sort of part of the replacement of the 1Ds III. It's much tougher to differentiate the two, even tougher than the 1Ds3 vs. 1Ds2 debate everyone faced. That was a bit easier due to megapickels, but this choice isn't.
If you are NOT going to get the 1DX and you think at any time that you may need to shoot at higher ISO's, then you have to get the 5D Mark III instead. If you know you will be shooting well-lit studio, outdoor scenes, landscape only, then you can enjoy the IQ of the 1Ds3. If you have the buget to own both, get a 1DX.