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Rumors => EOS Bodies => Topic started by: stageshoot on March 18, 2012, 09:01:57 AM

Title: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: stageshoot on March 18, 2012, 09:01:57 AM
OK Below are a set of test images in controlled studio lighting across the ISO Range from the 5D MKIII (Production Body) (UK) Firmware 1.0.7 No Noise Reduction or Sharpening, Direct transfer from RAW to JPG in Photoshop

FIRST - 100 ISO STUDIO LIGHTS BASE TEST

(http://www.ebaystorage.webspace.virginmedia.com/100 (FS).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/100 (F).jpg (http://www.ebaystorage.webspace.virginmedia.com/100 (F).jpg)

1600 ISO

(http://www.ebaystorage.webspace.virginmedia.com/1600 (86S).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/1600 (86).jpg (http://www.ebaystorage.webspace.virginmedia.com/1600 (86).jpg)

3200 ISO

(http://www.ebaystorage.webspace.virginmedia.com/3200 (87S).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/3200 (87).jpg (http://www.ebaystorage.webspace.virginmedia.com/3200 (87).jpg)

6400 ISO

(http://www.ebaystorage.webspace.virginmedia.com/6400 (88S).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/6400 (88).jpg (http://www.ebaystorage.webspace.virginmedia.com/6400 (88).jpg)

12800 ISO

(http://www.ebaystorage.webspace.virginmedia.com/12800 (89S).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/12800 (89).jpg (http://www.ebaystorage.webspace.virginmedia.com/12800 (89).jpg)

25600 ISO

(http://www.ebaystorage.webspace.virginmedia.com/25600 (90S).jpg)

LINK TO FULL SIZE JPG

http://www.ebaystorage.webspace.virginmedia.com/25600 (90).jpg (http://www.ebaystorage.webspace.virginmedia.com/25600 (90).jpg)
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: neuroanatomist on March 18, 2012, 09:16:20 AM
Thanks!

Question: did you decrease light levels by stops as you increased ISO (optimal), or did you just increase shutter speed (bias in favor of less noise at high ISO, relevant for shooting sports but less relevant for low light shooting)?
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: mpistonephoto on March 18, 2012, 09:24:09 AM
Not my post to answer, really... but it was Shutter speed.

All the Exif data is there.   Manual Mode.   I only checked the last 2, but went from 1/400 to 1/800.

Mike
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: stageshoot on March 18, 2012, 09:24:32 AM
Thanks!

Question: did you decrease light levels by stops as you increased ISO (optimal), or did you just increase shutter speed (bias in favor of less noise at high ISO, relevant for shooting sports but less relevant for low light shooting)?

This was just quick and dirty - Increase shutter speed to force ISO increase
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: GL on March 18, 2012, 09:29:36 AM
Looks good - about a stop difference from what I'd expect to get on the MkII. Interesting the jump from 6400 to 12800 is not as big as 3200 to 6400, so 12800 becomes more than usable.

I think, thigh, that Canon has hit the limits of its current sensor technology for usable ISOs up to 6400, and 12800 at a push. We'll need to see something very different - preferably in hardware, not software - to see a similar gain in high-ISO noise from the next generation of camera.

If the 1DX is indeed a RAW stop better than the MkIII, that would be very impressive indeed. Somehow I don't think it will be, but let's see.
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: pedro on March 18, 2012, 10:41:23 AM
Well with my current 30D in mind, this looks really nice. If the raws are 1 stop better compared to the 5Dii, how many stops is that to my current body...about 4 I guess. My H1 ISO 3200 don't even look like 25k without pp! This is the dream cam for me, for a long time ;-) About one year more and yes...here I come! 8)
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: funkboy on March 18, 2012, 12:04:45 PM
First of all, thanks very much for posting this, stageshoot.  It looks like you've got a long way towards providing a controlled environment for your testing.  A few suggestions, if I may:


Thanks again for posting the test images, they're certainly interesting as shot already.
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: Martin on March 18, 2012, 12:15:15 PM
NICE. If thats pure raw, wo any tweaks with jpg conversion I am impressed.
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: unkbob on March 18, 2012, 01:51:55 PM
Looks like the ISO 100 pic has a much greater DOF than the others.
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: jrista on March 18, 2012, 02:05:13 PM
Also want to thank you for the sample shots. It'll be really nice to explore how improved ISO and noise are on a properly normalized basis. :)

I would like to second @funkboy's requests though. Particularly the DOF, which is indeed pretty thin, and it seems to shift a bit amongst the first few shots, making comparisons difficult. The 5D III has a diffraction-limited aperture (f/#) of f/10.1, so you could probably shoot at f/9 to gain maximum quality, and increase DOF appreciably.

Also to @funkboy's points, you might want to shoot with the Camera Neutral picture style, and use the same thing when importing with ACR. That is the least attenuated camera profile, and should leave colors as natural as possible without causing any one channel to blow out before the others.

Finally, if you have a Gretag Mcbeth/X-Rite color checker card, including that would be awesome, as it would give us reflectivity from full black to full white, and color fidelity to boot. :)

Anyway, THANKS for the samples!
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: marekjoz on March 18, 2012, 04:45:52 PM
Thanks for samples.
25600 and 12800 look somehow what I expected. What I'm a bit dissapointed of is 1600 actually. I expected it to be a bit better.
Title: Re: 5D MKIII ISO Test (Controlled Lighting - Studio)
Post by: lida on April 30, 2012, 11:24:25 PM
Thank you for your sharing!






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