Canon 1Ds MkIII & 5D MkI Image Differences

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Canonman II

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Rob
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Shooting a single subject with the same lens, exposure and metering settings on both cameras, I've noticed that my 1Ds MkIII always produces an image that looks about 1/2 a stop under exposed when compared with the identical 5D image. I've read that the dynamic range of the 1Ds is wider than the 5D, so am I seeing a result of this extra range, or is there a problem with my 1D?

From a technical perspective, I shoot in RAW, process via Canon's DPP software and display everything on a fully calibrated monitor. I think we can strike this little lot off as a possible problem area, but any advice would be most welcome :D
 
I've no experience of the 1Ds mkiii or the 5D, but historically the 1D line's metering has always tried to preserve the highlights more than Canon's lower ranges. Might be that you're seeing?
I noticed that when i first got my 1D mk2 and i've seen other people mention it too.
 
DUMB quesiton.......but if you shoot full manual then surely meeting is ruled out? As in theory you are doing your own exposure level so the camera doesn't need to worry about that.

I'm defo no expert hence the possibly stupid quesiton.......but hey you won't learn if you don't ask :)
 
Shabba - Canon's iso ratings have changed over the last couple of years. It used to be that the cameras were actually faster than the stated iso. Canon changed that either with the 1dmk3 or mk4. Not sure if the 1Ds was included in that.

The actual tone curve could be different too which could produce different results.
 
shabba said:
DUMB quesiton.......but if you shoot full manual then surely meeting is ruled out? As in theory you are doing your own exposure level so the camera doesn't need to worry about that.

I'm defo no expert hence the possibly stupid quesiton.......but hey you won't learn if you don't ask :)
Click to expand...

Shabba, I've shot the same subject with both cameras in manual (meter reading taken from a sekonic 308) and even with the same "Picture Style" selected, both the images have turned out slightly different. I think Werecow has a point, as I do recall one of the lecturers at Experience Seminars saying something along those exact same lines. It all boils down to the CMOS sensors characteristics and how the data is processed I guess, much the same as it used to be when sending film off to different processing labs :)
 
They're both full frame sensors
 
My 1ds mk3 underexposes as well, about 2/3 stop, something I've got used to.
 
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