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Archive 2009 · DXOmark published D3x sensor analysis

  
 
Tim Ashton
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p.8 #1 · DXOmark published D3x sensor analysis


Bruce Sawle wrote:
In studio or for landscapes ISO 100 will work. But in real world applications out in the filed ISO 400 and above seem to be the norm for my shooting. Plus with Canons line of fast primes I am able to keep my ISO to a minimum and still retain the propper shutter speed.


64 ISO / ASA was the norm for many many years, or has my memory failed me

Tim



Jan 18, 2010 at 04:51 PM
Gochugogi
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p.8 #2 · DXOmark published D3x sensor analysis


thedigitalbean wrote:
So according to Thom Thogan, when the D3x is set to 14-bit the FPS drops to 1.8. I think this is true with the D300 as well. Anyone have an idea of why? Doesn't happen with the D3 or any of Canon's 14-bit cameras.


Because Nikon doesn't use the twin DiG!C IV processor to keep 14-bit images from bogging down the system! Yeah, 1.8FPS ain't too impressive except to landscaper shooters.

64 ISO / ASA was the norm for many many years, or has my memory failed me

Back in the 1970s Kodachrome 64 was the standard for magazines. But then you actually wrote "ASA" so you must remember the 70s. I've never seen a DSLR with ISO64.



Jan 18, 2010 at 05:07 PM
skibum5
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p.8 #3 · DXOmark published D3x sensor analysis


Fred Relaix wrote:
And it is quite impressive with 13.7 stops of DR.

Even more when compared with 5D2 and Sony a900 : http://www.dxomark.com/index.php/eng/Image-Quality-Database/Compare-cameras/(appareil1)/287|0/(appareil2)/279|0/(appareil3)/265|0/(onglet)/0/(brand)/Nikon/(brand2)/Canon/(brand3)/Sony


and they get the same high ISO SNR with stronger CFA array and not needing to widen the spectral band as much as canon




Jan 18, 2010 at 05:10 PM
skibum5
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p.8 #4 · DXOmark published D3x sensor analysis


kjetils wrote:
But then again, it cost a bit more than a 5D2..

K


true too

but I wonder about a D700x/D900 etc.



Jan 18, 2010 at 05:11 PM
skibum5
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p.8 #5 · DXOmark published D3x sensor analysis


thedigitalbean wrote:
So according to Thom Thogan, when the D3x is set to 14-bit the FPS drops to 1.8. I think this is true with the D300 as well. Anyone have an idea of why? Doesn't happen with the D3 or any of Canon's 14-bit cameras.


So what?

What would you rather have though?

14bits at full fps all the time that only deliver 12bits of DR

OR

14bits at 2fps that give you 13bits of DR and 12bits at full fps that give 12bits DR





seems like canon is just wasting your storage space



Jan 18, 2010 at 05:15 PM
skibum5
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p.8 #6 · DXOmark published D3x sensor analysis


deleted

Edited on Jan 18, 2010 at 05:23 PM · View previous versions



Jan 18, 2010 at 05:16 PM
skibum5
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p.8 #7 · DXOmark published D3x sensor analysis


Andi Dietrich wrote:
More DR is very useful and there were already posts which suggest that the Sony 24mp has more DR than a 1ds3. What I wonder is why does the Sony have less DR than the Nikon and why does the Canon have less DR but the same signal to noise ratio?


the DR is based upon read noise

the SNR mostly on photon capture efficiency with a little read noise tossed in



Jan 18, 2010 at 05:18 PM
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