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p.1 #10 · p.1 #10 · Was the Canon 5DS/R DXO Mark score ever explained? | |
Scott Stoness wrote:
The difference between 5dsr and 5ds in dxomark was likely due to plus/minus accuracy on their testing. The numbers were the same rounded. They are the same. The only difference is that one has no moire reducing filter and the other has the aa filter and then reverses it to effectively have none. If you took two 5ds's and compared them the copy differences would likely result in different readings.
There is a debate whether the reversal of the anti aliasing actually adds resolution or just results in noise amplification that makes straight lines look more distinct (equivalent of sharpening) thus resulting in higher resolution readings on tests that measure resolution of straight lines (because thats what most resolution tests measure - straight lines and the ability to resolve them). My view is that 5dsr achieves more resolution but not as much as the tests indicate. It has to degrade the image slightly to purposely blur the image and then deconvolve the blur. Lenrentals.com blog shows the 5dsr resolving more but read this paragraph again you might conclude that its a false indicator.
The consensus is that if you do architecture (parallel lines) or products (wool with patterns for example) or some other pursuit amenable to moire you should buy the non R. Keep in mind that close up of feathered ducks will yield some moire. So if you are worried get a non R. Myself I bought the R because I mostly shoot landscape which is irregular (not overly subject to moire) , and i have used the a7r (non aa filter) without issue for 2 years, and if I am going for resolution (I am buying 50mpx) I want more effective mpx.
My experience with my 5dsr is very good color accuracy. I like it more than the 5diii but thats not scientific. ...Show more →
Thanks Scott this was exactly what I needed to know.
What's funny is after I posted this last night I thought I bet a get a bunch of "DXO Mark is useless" and "only idiots choose a camera based on DXO mark scores" type responses.
Sure enough I was right, despite the fact that my question had nothing to do with DXO Mark scores and everything to do with potential color accuracy differences and issues between the 5DS and R. After all if DXO scores were a primary consideration I would not be looking at Canon cameras would I?
My main interests are landscape, portraits, and kids/family so I think the 5DSR will be a good fit. If color filters/accruary and noise levels are nearly identical between the two cameras and moire is NOT a concern of my mine it looks like the 5DSR will be a good choice for me.
I admit though, the Sony A7R II is still in contention. Tough choice! Though I think I'll be much happier with my 16-35, 24-70, and 70-200 than the Batis 25, 85, and Zeiss 55. Three primes seems limiting and I don't like the soft corners of the Sony FE 16-35.
Thanks.
-Brian
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