Microsoft OneDrive and Canon 70D RAW Files display issue

Question

Hello Guys,
I have a Canon 450D and I was really surprised that my RAW files (*.CR2) were displayed on Microsoft OneDrive without making a JPG files.
That's really cool !
Few weeks ago I receive my new Canon 70D.
I have upload my RAW files (*.CR2 also) on OneDrive and the file is not displayed.
To make it easy, you will find both files here :
http://1drv.ms/1qvndZW
I all ready ask support on their forum : Here
But they ask me to ask you...
By any chance, has Canon changed their .CR2 files format that would explain Microsoft has to update their "Convertor" ?
Thanks in advance for your time !
If you want a OneDrive Space, you can use my referral link or Bing OneDrive ;-)
Geolem
Solved!
Go to Solution.

Answer 1

Camera RAW is more of a "concept" than a specific standard.   The idea behind a RAW file is that the data unloaded from the chip will not be altered in any way which results in a loss of original data.  
JPEG images use a "lossy" compression algorithm which will normalize data when differences are so subtle that your eye probably would not have noticed the difference.  But when images are adjusted, subtle differences may be "stretched" and the loss of the original data can be detrimental to ability to adjust the image later and still get good results.
BUT... since every camera can have a difference sensor, different resolutions, etc. the method needed to decode a RAW file and display the image can be different literally on a model-by-model basis.  When you work with RAW files, you always need the codec specific to that very camera model.... not just "any" .CR2 codec will work.  This is the same with all other brands of cameras as well.
Microsoft does not include camera RAW updates in the default OS updates that you may be applying to your computer on a regular basis (Apple does... every couple of months I get a camera RAW update and if I read the notes, it'll have a list of new camera models on the market for which they've added RAW support.)    But Microsoft DOES make the RAW updates available... they're just not automatic.  You have to go download and install them.
See this link at the Microsoft support website:  http://support.microsoft.com/kb/2899189
If you look down the page on that specific link, you'll notice a whole list of cameras for which they've added RAW support and the Canon 70D is among them.
Tim Campbell
5D II, 5D III, 60Da