The new EOS 50D versus the 3-year old EOS 5D. I believe these were shot in RAW. The EOS 5D RAW file was pushed/expanded to ISO 6400, and compared to ISO 6400 Expansion on 50D.
Scroll down to the very bottom of this page to see the direct comparison.
[Added More Links Below]
Here is another comparison between a retail version of the new EOS 50D and an old EOS 5D. The test was done by a helpful member (motopram) at DP Review who bought a 50D, and borrowed a 5D. Some things to consider, before looking at the pics:
- Shot in RAW, converted through DPP, identical settings, NR sliders at ZERO in DPP.
- Both shot with the same 180mm Macro lens @ f/11
- Identical settings means the EOS 5D will be 1/3 stop brighter. The advantage of the EOS 5D is that its sensor is 1/3 stop more sensitive than the newer cameras.
- Identical settings means EOS 5D will have 1.3 stops shallower Depth of Field in these samples
- Focus is a bit off between samples, so we can't compare details. Especially since DoF is different. But we can still compare noise grain, since NR=off.
- The images were not resized, since the difference between 12.8 MP and 15.1 MP is negligible. less 9% difference in vertical, horizontal size.
Here is the EOS 50D at ISO 3200
Here is the EOS 50D at ISO 1600
In my humble opinion, the EOS 5D at ISO 3200 looks as good (or better) than the EOS 50D at ISO 1600. It's interesting that the 5D has very fine noise grain, compared to the lumpy noise blotches on the 50D. Anyways, in my opinion there's slightly more than one stop difference. But I'd advise people can look at those pictures themselves, and make their own judgements.
Some more comparisons from the test above:
Here is the EOS 5D at ISO 1600.
Here is the EOS 50D at ISO 800.
It just goes to show that fancy new technology is no substitute for a bigger sensor. When the EOS 90D shows up in 2014, I'd bet it *still* wouldn't be as good in high ISO as a then-9-year old EOS 5D.