When I first using and shooting RAW I just noticed this .XMP file upon exporting and converting the RAW files. Upon searching DPP there's no such topic talking about what really it is all about.

Out of curiosity I google the ".XMP" and below is what I got.

Have you ever noticed that along with your camera raw image files, sometimes there is a sister file with the same name but with a .xmp extension? “What are these,” you ask, “and where do they come from?” Let's start with how they are created. These files are sometimes created when you process/open a camera raw file via the Adobe Camera Raw (ACR) dialog. Why only sometimes? Well, that depends on how you have your Preferences set up.

To see what I'm talking about, open a file via the ACR plug-in and click on the fly-out menu (circle with a triangle on the right next to Settings) and select Preferences. If your 'Save image settings in:' is set to 'Sidecar “.xmp” files', then whenever you open and process a camera raw file via the ACR plug-in, an accompanying .xmp file will be created. Okay, so we know how these files are generated, but what are they? One thing to try for fun is to open these .xmp files in a text editor. You'll see a bunch of Metadata represented and some other fun stuff. These .xmp files are records of how you processed your file. After the files have been generated, if you re-open your original camera raw file, those settings will be re-applied. These .xmp files will also update how your thumbnails are viewed in the File Browser, for instance. Want to start over from scratch, simply move or delete that .xmp file.

For better understanding of what it is. Try this one: Extensible Metadata Platform (XMP) (http://www.adobe.com/products/xmp/)

For more details about RAW Format click here. (http://avondale.typepad.com/rawformat/)

Cheers and enjoy! :):):)

Thanks for the info Jason.

I believe this started w/ CS2 when Adobe started using non-destructive editing to RAW files. Correct me if I am wrong, it may have been used much earlier.

I think can chuck this XMP file and your image reverts back to its as-shot state when viewed in ACR.

Yes Randy. And it's way cool now, I think... :)
Not much user of this one coz' I learned to shoot Jpeg's and by the way, I just bought my DSLR last October... Newbie lang po sir! Hehehehe...

Automate features has been a lot of help to the PS users. I don't even need Image Ready for my web designing sidelines.... Hehehehe...

I shoot 80% RAW. I only shoot JPG when its just a trip w/ the friends etc :D Other than that, RAW is it.
You should too! ;)
I think you can also use that XMP thingy w/ JPGs in ACR4. Let me double check that though.

I shoot 80% RAW. I only shoot JPG when its just a trip w/ the friends etc :D Other than that, RAW is it.
You should too! ;)
I think you can also use that XMP thingy w/ JPGs in ACR4. Let me double check that though.

I should invest to the CF nowadays! :)

For the 4gig of CF how many RAW did you take? I just had 2gig in my cam while the 1gig got broken "CF ERROR" when try to read the images using MAC. :Angry:

Wow! Really! Great... I just need to try that one though... Let me know how bro?!

On the average, a 4GB CF on a 40D shooting RAW (RAW only; no JPGS, not sRAW) it should be in the ballpark figure of 400.
2048MB / 10MB
It would still depend on the ISO and detail of the photo you took.
I personally use 4 2GB CFs.

Wow that's a lot of CF to invest! Thanks Randy! :)

For the meantime I think another 4gig will do. There's no such events pa naman eh! Hehehehe... It's too expensive... What CF are you using right now, if you don't mind? Do you think Transcends is ok?

I am not sure w/ transcend. I use Sandisk Ultra II. :)

try corsair CF cards

Thanks Pipo! :) Never heard of that or maybe I'm not aware! Hehehehe...

i read also lexar also is good