DXO Mark Score
Apr 9, 2017 22:45:53 #
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
Apr 9, 2017 22:59:48 #
bsmith52 wrote:
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
Here's what I found: https://www.dxomark.com/About/In-depth-measurements/Measurements/Sharpness
Apr 10, 2017 07:01:08 #
steve_stoneblossom
Loc: Rhode Island, USA
bsmith52 wrote:
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
I believe the number within the white box represents the overall rank of that particular model among all those DxO has tested.
Apr 10, 2017 07:07:51 #
LoneRangeFinder wrote:
Here's what I found: https://www.dxomark.com/About/In-depth measurements/Measurements/Sharpness
LoneRangeFinder, thank you for posting this DxO explanation - genuinely helpful. My eyes nearly always glaze over when I read this material. It does not (and I'm not sure that it can) speak to how a lens performs for an "average" user (whatever that is). I understand that DxO cannot possibly keep up with every new lens, but it seems their testers cherry-pick lenses to be tested from among whatever product seems most interesting to them personally as opposed to fleshing out the lenses for any individual brand - there's no apparent plan/strategy for the lenses chosen. Some lenses take forever to be tested. DxO's arcane technical jargon does little to suggest what Joe Camera Enthusiast might/should want to purchase. The ultimate ratings seldom make sense. Bottom line: I suspect modern lens technology has gotten so good that differences between lenses is meaningless. DxO is tabulating "angels on the head of a pin". /Ralph
Apr 10, 2017 08:33:24 #
rjaywallace wrote:
LoneRangeFinder, thank you for posting this DxO ex... (show quote)
Ralph: you'll get no disagreement from me.... I find that lens testing for fringing and distortion is much more helpful.... however we can see that unless corrections have been made using post processing. I prefer just looking at the sample images list in DPReview as a starting point. They give the data for each image as well.
Allen
Apr 10, 2017 08:40:40 #
The difference between opinion and REAL science is; one is easy to understand, while the other needs to be explained. In one case you have to take someones word... and in the other, you can demonstrate the results through repeatable experimentation.
A few hundred years ago popular opinion held the world to be flat. Good science proved that idea wrong.
In fact, good science resulted in the creation of photography and digital cameras.
That's the take away here....
A few hundred years ago popular opinion held the world to be flat. Good science proved that idea wrong.
In fact, good science resulted in the creation of photography and digital cameras.
That's the take away here....
Apr 10, 2017 09:25:20 #
mflowe
Loc: Port Deposit, MD
bsmith52 wrote:
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
I can't figure out their scores at all. Don't know how much to trust them. I think lenses are like stereo equip. The tech specs do not always tell how good something sounds. Before I buy a new lens I always google and check youtube for reviews. Everybody will rave how good a lens is, then I check Dxomark and I'll see crappy kit lenses rated ahead. so i usually go with the real world experience.
Apr 10, 2017 11:08:22 #
Thanks for your replies. It was just a curiosity on my part that I could not figure out. DxO is not my primary source, but one of many I look at. I don't buy a lot of equipment but do enjoy reading about, and keeping up with, photo technology.
Apr 10, 2017 11:53:11 #
bsmith52 wrote:
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
DXO does a lot of testing, but they don't do a good job of explaining their results. You shouldn't have to do research to understand the research.
Apr 10, 2017 12:02:16 #
mflowe wrote:
I can't figure out their scores at all. Don't know how much to trust them. I think lenses are like stereo equip. The tech specs do not always tell how good something sounds. Before I buy a new lens I always google and check youtube for reviews. Everybody will rave how good a lens is, then I check Dxomark and I'll see crappy kit lenses rated ahead. so i usually go with the real world experience.
I don't have much faith in their published scores either. DXO Mark has a tendency to give higher scores to lenses from manufacturers they do most business with. Purely coincidence? I think not.
Apr 10, 2017 12:34:01 #
Ranjan
Loc: Currently Cyber-Nation!
When shall DXO figure out fujis enough to include those in their reviews...?
Apr 10, 2017 12:43:59 #
Ranjan wrote:
When shall DXO figure out fujis enough to include those in their reviews...?
When Fuji becomes one of their optics testing clients and pays them money.
Apr 10, 2017 16:59:53 #
jerryc41 wrote:
You shouldn't have to do research to understand the research.
Apr 10, 2017 18:40:43 #
DXOMark explains EXACTLY how their scoring system works.
Click on the score in question and the website will give you a dialog box with the description of the score plus an explanation of the method and reasoning for those choices.
It isn't rocket science; it's optics.
Click on the score in question and the website will give you a dialog box with the description of the score plus an explanation of the method and reasoning for those choices.
It isn't rocket science; it's optics.
Apr 10, 2017 22:59:33 #
bsmith52 wrote:
Can someone explain the numbers in the box under the DxoMark Score and Sharpness. I couldn't find anything on their site.
Thanks
Thanks
It might be helpful to know how many lenses of a given make and model are tested before a report is rendered.
I found it interesting in May of 2016 that when I inquired of DXO how many cameras of a given brand and model were tested for their dynamic range comparisons, the answer I received was:
-------------------
"Sophie Cornillet-Jeannin (Support & Assistance)
May 11, 2:44 PM
Hi again David,
As you're pointing out, we measure one sample device of each brand and model.
However, if the results seem inaccurate, then some extra tests can somehow be performed, but this almost never happens.
Kind regards,
Sophie
DxOMark team"
------------------
As you can imagine, I found that response from DXO to be rather surprising, given the common phenomenon of "performance variance" that plagues a wide variety of silicon-based semiconductor devices (including our cameras' photosensors)
Food for thought?
Dave
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