70D Dynamic Range is actually great, despite what DXOMark says

Started Jan 21, 2014 | Discussions thread
David Hull
David Hull Veteran Member • Posts: 6,387
Re: 70D Dynamic Range is actually great, despite what DXOMark says

hjulenissen wrote:

TTMartin wrote:

Yes, attack my credibility.

Well, you did write a lot of nonsense in the previous post. This does not necessarily make your claims wrong, but it sure makes me suspicious about your claims.

That's much easier than presenting a coherent rebuttal.

p.s. Remember, John Sheehy bought a Canon 6D instead of switching to Nikon.

I, too use Canon. Fortunately, I have the free will to be critical about "my" brand. I also have the confidence to claim that DR at base ISO is just one of many characteristics that make up a camera.

There are many good reasons to choose Canon, even though Nikon appears to do better at one parameter. I think you would be taken more seriously if you were able to admit this.


His whole argument hinges on his assumption that Canon has some secret sauce buried in their RAW file that only they can decode with DPP.  The problem with that is that he is not able to come up with a defensible argument as to why Canon would not reveal this as part of their SDK to the third party RAW converter vendors.

Canon equipment clearly performs worse than Nikon and Sony in this particular area, it is an often discussed and well known fact which (if TTMartin is to be believed) is relatively easy for Canon to fix by just revealing to the other vendors how to decode their "secret sauce".  Canon would stand to gain nothing by holding back the info, after all, they don't sell their SW, and hardly anyone uses it.  Again, if his premise is true, Canon is deliberately putting themselves at a huge disadvantage by not sharing this supposedly secret info with the other third party RAW converter makers.

If it were this easy, they would have fixed it by not.  Additionally the TP RAW converter manufacturers aren't that stupid.  They would have reverse engineered the thing by now if there were anything to this.  There are better explanations for this behavior that hold up to sound mathematical system analysis without having to resort to any hand-waving mumbo jumbo.

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