Thanks very much for this. Do you happen to have the DR for the Panasonic GH4 as it isn't as option to select on your website?
Thank you
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D500 Photographic Dynamic Range (PDR)
- Thread starter bclaff
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Thank you
bclaff
Forum Pro
This math error has been corrected to ISO 2452. (9.62 EVS)
bclaff
Forum Pro
Could still be on my main computer which is on a moving van on it's way here.
athomasphoto
Forum Enthusiast
Yikes, so for the money the D7200 (as is becoming commonplace in most of these tests lately) is just an incredible benchmark of a camera for the money. I'm selling mine like-new in box w/ grip for $1000 and it's still giving the absolute best DX cameras a run for their money.
Great little camera and my first "non pro" Nikon, makes it tough to sell the thing but there's too much I can do with the $$$ and honestly there's only one spot for that type of camera, and as a whole the D500 is better... so that's what I keep telling myself.
Great little camera and my first "non pro" Nikon, makes it tough to sell the thing but there's too much I can do with the $$$ and honestly there's only one spot for that type of camera, and as a whole the D500 is better... so that's what I keep telling myself.
Albert Silver
Senior Member
Well then Thanks for getting this D500 data out to us in the midst of moving! I know how much of a pita that is :-D
Does that change the result: The D500 is 0.23 EV better than the D7200 at 6400 ISO? Most people commonly refer to stops of dynamic range when they really should be saying EV. Is there any material diffreence though? Please explain.It's not stops, it's EV the unit for DR (vertically, fixing ISO setting). To work in stops (ISO) you should look difference horizontally for a fixed EV level.Interesting comparisons:
The D500 has barely one quarter of a stop increased dynamic range at ISO 6400 compared to the D7200. It lags the D750 by two thirds of a stop, and lags the D5 by one and a half stops.
The other issue is the arrangement of Bill's graph. He has EV on th y axis. The variable is always on the y axis. Pick a set ISO on the x axis, and read off EV on the y axis. It's a bit foreign to me to be "look(ing) for difference horizontally". Horizontally is a fixed value like time, or in this case ISO.
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And yet used D7200 bodies are still selling in eBay for up to $850. Heck one sold yesterday for $780. Let him get what he can get.
Albert Silver
Senior Member
I have no idea what your point about my 'letting him get what he can get' is. I am merely giving him info on the market.
Oh please.
breivogel
Senior Member
Is this what one would expect theoretically based on the pixel size?
I would guess that at high iso, photon noise would be reduced proportionally by (20/24)^.5, or about 10% (.2 ev) for the D500 over the D7200.
I would guess that at high iso, photon noise would be reduced proportionally by (20/24)^.5, or about 10% (.2 ev) for the D500 over the D7200.
Paddler213
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So, it looks like the high ISO value for the D500 is maybe 2400? DxO Mark shows the D300 at 687 or so. What will the D500 rate?
Youngjun91
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Hi Bill, that's some really great work you've done. Thank you!
Can you or anyone else explain the exact meaning of Low Light ISO value. I apologize ahead of time if it's already explained on your website and I couldn't figure it out.
(1) How is this different from the DxO score for Sports (Low Light ISO) score? I assumed (maybe incorrectly) that DxO was based off of the signal to noise ratio (i.e. a certain threshold floor of acceptable noise). The DxO equivalent numbers seem higher.
(2) Or is it based off of Dynamic Range? Or combination of different attributes?
(3) I noted these Low Light ISO scores in these bodies on your site:
D750: 3733
D500: 2452
D7200: 2135
7D Mark II: 1780
5D Mark III: 3615
Sony ILCE-6300: 2699
If I'm interpreting these correctly, that would mean that the D500 is .52 stops behind the D750 and .13 stops ahead of the D7200 ??? I admit on my part there are lots of assumptions and ignorance going on, so please correct me if I'm wrong.
Can you or anyone else explain the exact meaning of Low Light ISO value. I apologize ahead of time if it's already explained on your website and I couldn't figure it out.
(1) How is this different from the DxO score for Sports (Low Light ISO) score? I assumed (maybe incorrectly) that DxO was based off of the signal to noise ratio (i.e. a certain threshold floor of acceptable noise). The DxO equivalent numbers seem higher.
(2) Or is it based off of Dynamic Range? Or combination of different attributes?
(3) I noted these Low Light ISO scores in these bodies on your site:
D750: 3733
D500: 2452
D7200: 2135
7D Mark II: 1780
5D Mark III: 3615
Sony ILCE-6300: 2699
If I'm interpreting these correctly, that would mean that the D500 is .52 stops behind the D750 and .13 stops ahead of the D7200 ??? I admit on my part there are lots of assumptions and ignorance going on, so please correct me if I'm wrong.
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bclaff
Forum Pro
First the math. I added the EV values in bold above.
D750 is 10.22-9.62=0.60 ahead of the D500
D500 is 9.62-9.42=0.20 ahead of the D7200
My Low Light ISO value comes from where PDR is 6.5 for the sensor.
Low Light ISO correlates pretty well with DxOMark Sports Score .
My Low Light ISO values run about 2/3 stop higher than DxOMark Sports Score.
Youngjun91
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Thank you Bill. That's very helpful. Do you know how well PDR correlates with signal-to-noise ratio?
bclaff
Forum Pro
I can't make sense of your question.
PDR is determined by the Signal level for a particular Signal to Noise Ratio (SNR) where SNR is a function of the resolution of the sensor.
So of course PDR correlates with SNR.
But I suspect that isn't your question.
It's a bit of reading but you may want to look at my Sensor Analysis Primer
Paddler213
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Thanks, Bill. So, if your ratings run 2/3 stop higher than DxO Mark, your value for the D300 would be roughly 1200? That means the D500 should be about 1 stop better than the D300? I shoot my D300 at 800, so I should be able to shoot the D500 at 1600 no problem?
bclaff
Forum Pro
The 2/3 figure is an approximation.
You can see my values in the sort-able table below the PDR chart .
My D300 value is ISO 892 (8.16 EV) the D500 is ISO 2452 (9.62 EV)
So that's 9.62-8.16=1.46 stops
The PDR at ISO 800 for the D300 is 6,65
The PDR at ISO 2500 for the D500 is 6.45, close to 6.65
So I'd say you can shoot the D500 at ISO 2500 and get the same Image Quality (IQ) as the D300 at ISO 800,
FingerPainter
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Why do you think pixel size will make a significant difference to PDR of a whole sensor?
It might have a small impact on read noise, but that should be about it.
Thank you, nice to see the objective data coming in so soon. I think people wanted/hoped for MUCH better high iso performance succeeding the D7200, BUT that's not the main reason for wanting this D300 successor for so many years. In most other ways it seems to exceed expectations and that's a great thing. I see one in my future, but for now I'm happy for those who have a D500 in their hands. 
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