ondjultomte
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Sammanfattning av testet:
I think for all the pixel peeps, and Cooked vs RAW, and Sony marketing talk. We really have not stopped to look at how good this camera is.
Objective Testing by DIWA-LABS.com really says it all
In Color accuracy and Dynamic Range Sony has put some real effort into this camera.
Each test is described under Test Facts..
And trust me the engineers working on these sensors know they were working towards a set of results . Nikon as you will see has a very controlled design which doesn't seem to lead to the best color accuracy or dynamic range of the three.
A700
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6366
Canon 40D
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6397
D300
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6384
Open all three up side by side. Clicking in a graph gives you a larger image.
Color Fidelity - Lower is better
A700 (its not even close on this one)
4.9 to 7.64 range.. note as I pointed out in a previous post the A700 has amazing color accuracy in high ISO It's best number is at ISO 6400!! It's "worst Number is 7.64 at ISO 800
40D line is pretty straight with its most accurate point being ISO 3200 at 10.30!!
D300 is best at ISO 1600 at 9.34!!
Next Graph Down
Color Sensitivity Higher id better.
All three are very close.. D300 is best except at ISO 100 where 40D is a fraction better.
Next Graph
WB Accuracy 40D and Sony Beat D300 with Canon slightly better at ISO 800 or below and Sony better above ISO 800
Next Graph
ISO Sensitivity down the ZERO line would be best. Canon is way High / D300 and A700 are a bit low over all D300 is just a bit more accurate but also a bit more inconsistent than the Sony.Both are off on ISO 100 (will Phil find D300 does ISO 100 the same way Sony does? Will he spend as much time on it?)
Next Graph.. Noise!!! height is better.
A700 beats even the Canon. What I find interesting is the precision matched levels of the D300. To me the says there is some serious altering of the image data to create a favorable noise pattern. Thoughts?
Next Graph Noise Grain size.
Sony A700 and 40D very similar in size and change of ISO.. So when people compare the Sony high ISO to Canon there are pretty close. D300 has a very Controlled smaller grain. "again this controlled noise pattern says Nikon is doing a very different and very strong NR on its image data"
Next is real coloration index low is better.. (I believe this is another measure of color accuracy.. Nikon is a bit better most of the time, Sony much better and consistent at ISO 6400 .. both beat the 40D by a large margin.
Next is Color Standard Deviation (how consistent are the colors as they very larger number means that colors vary a larger amount form accurate.)
Sony Is best. Interesting here is Nikon has a very controlled curve that is the inverse of its noise graph. I would say the more Nikon controlled noise, the wider some colors are from accurate.
The last two are my favorite!!
Dynamic Range higher is better
and the A700 .. Is best here with the A700 and 40D having more than 1.5 stops of DR over the D300 across the board. Again look at the very controlled numbers from Nikon. This means something, not sure what, but it isn't about color accuracy.
And here is Tonal range (I don't know exactly what this means, except that the higher the better. in showing more tones )
Again the A700 is better and Nikon is doing something to remove the more common variations between RGB..this RGB matching does not seem to help colors which are a mix of all three.
What I would say is Nikon has worked at SELF consistency between RGB and ranges.. Sony seems to have worked a accuracy with what the sensor sees.
This is enough to get us all head aches.. but it really shows some of the over design philosophy of the sensors and what the camera puts out.
Med tanke på att SONY är ledande inom PRO video så är det inte så konstigt att de drar lärdom därifrån när de designat denna sensor och dess elektronik.
I think for all the pixel peeps, and Cooked vs RAW, and Sony marketing talk. We really have not stopped to look at how good this camera is.
Objective Testing by DIWA-LABS.com really says it all
In Color accuracy and Dynamic Range Sony has put some real effort into this camera.
Each test is described under Test Facts..
And trust me the engineers working on these sensors know they were working towards a set of results . Nikon as you will see has a very controlled design which doesn't seem to lead to the best color accuracy or dynamic range of the three.
A700
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6366
Canon 40D
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6397
D300
http://www.diwa-labs.com/wip4/test_result_overview.epl?product=6384
Open all three up side by side. Clicking in a graph gives you a larger image.
Color Fidelity - Lower is better
A700 (its not even close on this one)
4.9 to 7.64 range.. note as I pointed out in a previous post the A700 has amazing color accuracy in high ISO It's best number is at ISO 6400!! It's "worst Number is 7.64 at ISO 800
40D line is pretty straight with its most accurate point being ISO 3200 at 10.30!!
D300 is best at ISO 1600 at 9.34!!
Next Graph Down
Color Sensitivity Higher id better.
All three are very close.. D300 is best except at ISO 100 where 40D is a fraction better.
Next Graph
WB Accuracy 40D and Sony Beat D300 with Canon slightly better at ISO 800 or below and Sony better above ISO 800
Next Graph
ISO Sensitivity down the ZERO line would be best. Canon is way High / D300 and A700 are a bit low over all D300 is just a bit more accurate but also a bit more inconsistent than the Sony.Both are off on ISO 100 (will Phil find D300 does ISO 100 the same way Sony does? Will he spend as much time on it?)
Next Graph.. Noise!!! height is better.
A700 beats even the Canon. What I find interesting is the precision matched levels of the D300. To me the says there is some serious altering of the image data to create a favorable noise pattern. Thoughts?
Next Graph Noise Grain size.
Sony A700 and 40D very similar in size and change of ISO.. So when people compare the Sony high ISO to Canon there are pretty close. D300 has a very Controlled smaller grain. "again this controlled noise pattern says Nikon is doing a very different and very strong NR on its image data"
Next is real coloration index low is better.. (I believe this is another measure of color accuracy.. Nikon is a bit better most of the time, Sony much better and consistent at ISO 6400 .. both beat the 40D by a large margin.
Next is Color Standard Deviation (how consistent are the colors as they very larger number means that colors vary a larger amount form accurate.)
Sony Is best. Interesting here is Nikon has a very controlled curve that is the inverse of its noise graph. I would say the more Nikon controlled noise, the wider some colors are from accurate.
The last two are my favorite!!
Dynamic Range higher is better
and the A700 .. Is best here with the A700 and 40D having more than 1.5 stops of DR over the D300 across the board. Again look at the very controlled numbers from Nikon. This means something, not sure what, but it isn't about color accuracy.
And here is Tonal range (I don't know exactly what this means, except that the higher the better. in showing more tones )
Again the A700 is better and Nikon is doing something to remove the more common variations between RGB..this RGB matching does not seem to help colors which are a mix of all three.
What I would say is Nikon has worked at SELF consistency between RGB and ranges.. Sony seems to have worked a accuracy with what the sensor sees.
This is enough to get us all head aches.. but it really shows some of the over design philosophy of the sensors and what the camera puts out.
Med tanke på att SONY är ledande inom PRO video så är det inte så konstigt att de drar lärdom därifrån när de designat denna sensor och dess elektronik.
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