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Archive 2007 · _MG vs IMG markings?

  
 
JamieW
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p.1 #1 · _MG vs IMG markings?


I noticed after shooting our vacation over Thanksgiving that some of the files were titled _MG_xxx and others were IMG_xxx and I cannot figure out why. Its driving me batty.

Most of the time I shoot in P or AV. Then I realized that I let my 4 year old daughter shoot a bunch of photos and I put the camera in Program mode (green square) for that. I think those images she shot correspond with the IMG_ notation.

Can anyone confirm?



Nov 28, 2007 at 09:44 PM
thedigitalbean
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p.1 #2 · _MG vs IMG markings?


If the camera was set to sRGB it will be IMG_xxx and if it is set to aRGB it will be _MG_xxx


Nov 28, 2007 at 09:47 PM
CanonGuy
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p.1 #3 · _MG vs IMG markings?


As TheDigitalBean said, its due to the Color Space - sRGB = IMG_ and aRGB = _MG.

Cheers!



Nov 28, 2007 at 10:06 PM
Mike Ip
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p.1 #4 · _MG vs IMG markings?


To add to what was already mentioned, green square will always been IMG because it doesn't let you set the color space for that. That one is always sRGB.


Nov 28, 2007 at 10:20 PM
beewee
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p.1 #5 · _MG vs IMG markings?


I noticed the same. If you're shooting raw though, does it really matter which color space you're in?


Nov 29, 2007 at 01:58 AM
asimplefarmer
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p.1 #6 · _MG vs IMG markings?


its raw files

_mg is raw
img is jpg



Nov 29, 2007 at 02:35 AM
Mike McMurray
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p.1 #7 · _MG vs IMG markings?


asimplefarmer wrote:
its raw files

_mg is raw
img is jpg


Sorry, but that's incorrect. I shoot in raw 100% of the time and IMG_ is still the prefix on all of my files. The others are correct. It is the colorspace the image is shot in.



Nov 29, 2007 at 10:35 AM
Doug Pardee
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p.1 #8 · _MG vs IMG markings?


beewee wrote:
If you're shooting raw though, does it really matter which color space you're in?


The only difference that the color space makes for Raw files is the file name (the topic of this thread).

For JPEG files, the file name change is required by the DCF 2.0 specification. Canon chose to do the same for Raw files. My guess is that they did this so that when you shoot Raw+JPEG the two files have the same basic name, differing only in the extension (CR2 vs. JPG).



Nov 29, 2007 at 11:30 AM
Pixel Perfect
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p.1 #9 · _MG vs IMG markings?


Doug is spot on. The standard requires an underscore if aRGB space is used.


Nov 29, 2007 at 06:32 PM
stanj
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p.1 #10 · _MG vs IMG markings?


Pixel Perfect wrote:
Doug is spot on. The standard requires an underscore if aRGB space is used.


... except when you're shooting with the 1D(s) mk1, which ignored this standard



Nov 29, 2007 at 06:54 PM
Doug Pardee
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p.1 #11 · _MG vs IMG markings?


stanj wrote:
... except when you're shooting with the 1D(s) mk1, which ignored this standard


The DCF 2.0 specification came out after those cameras did. Obviously, those cameras don't claim to support DCF 2.0, and to say that they "ignored" it is a bit extreme.



Nov 29, 2007 at 07:28 PM
nathanlake
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p.1 #12 · _MG vs IMG markings?


I guess the real question is...why are you switching back and forth between color spaces? That would really mess up my workflow.


Edited by nathanlake on Nov 29, 2007 at 05:38 PM GMT



Nov 29, 2007 at 08:28 PM
clotug
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p.1 #13 · _MG vs IMG markings?


my 300D churns out CRW prefixes for RAW


Nov 29, 2007 at 08:33 PM





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