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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 02 Oct 2009 (Friday) 21:54
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Can someone post some 7D High ISO MRAW/SRAW images

 
BigBlueDodge
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Oct 02, 2009 21:54 |  #1

I've seen full resolution JPG images, but I am interested in seeing some Medium/Small RAW images compared to Full RAW images. With those lucky enough to have a 7D in hand, can you post up these other images sizes?


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Juan ­ Zas
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Oct 03, 2009 04:13 |  #2

Hi David,

Just recent posted at DPR (external link) some photos taken at ISO 100, 1600 & 3200, comparing RAW vs mRAW (in JPEG) .... you can download the files at:

http://rs363.rapidshar​e.com …7648454/ISO_TES​T_JPEG.rar (external link)

Look by yourself the difference ...

Cheers


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BigBlueDodge
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Oct 03, 2009 12:28 |  #3

than you Juan. I'll have a look.


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windpig
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Oct 03, 2009 15:52 |  #4

BigBlueDodge wrote in post #8751004 (external link)
I've seen full resolution JPG images, but I am interested in seeing some Medium/Small RAW images compared to Full RAW images. With those lucky enough to have a 7D in hand, can you post up these other images sizes?

As I write this I am batch proccessing a comp between 40D an 7D. I shot ISO 100-3200 (only up to 1600 in the 40D). I shot 7D in L and M RAW and 40D in L only. I am saving in best compressed JPG and 8 bit TIF, I'm not sure if many people will be able to open the 7D RAW files without the new DPP.

All are straight out of the camera with only WB adjustment.

Shots were taken with flash, one shot under exposed by one stop, then exposed correctly.

Ralph


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Oct 03, 2009 16:01 |  #5

Also, the only noise reduction is in the 7D pics, that was set to LOW, I failed to see where it could be DISABLED.


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Oct 03, 2009 16:02 |  #6

windpig wrote in post #8754283 (external link)
Also, the only noise reduction is in the 7D pics, that was set to LOW, I failed to see where it could be DISABLED.

It is the 4th option in the high iso noise reduction menu.


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Oct 03, 2009 16:06 |  #7

IF NR was turned on in your 7D, then my advice is to do the test over again. You can't realistically compare at 40D to a 7D with NR turned on. The 7D has 2 Digic 4 chips, which means that is has alot of processing power to perform NR while 40D only has a single Digic 3 chip. While I appreciate your effort to perform a test, the fact that the 40D had NR off and 7D had it on means that the test is invalid from the start.


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windpig
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Oct 03, 2009 16:21 |  #8

BigBlueDodge wrote in post #8754303 (external link)
IF NR was turned on in your 7D, then my advice is to do the test over again. You can't realistically compare at 40D to a 7D with NR turned on. The 7D has 2 Digic 4 chips, which means that is has alot of processing power to perform NR while 40D only has a single Digic 3 chip. While I appreciate your effort to perform a test, the fact that the 40D had NR off and 7D had it on means that the test is invalid from the start.

I've started down that path. I'm attaching one of the pics so that I can get input on what should be added or subtracted. Input is appreciated.

Thanks
Ralph


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Can someone post some 7D High ISO MRAW/SRAW images
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