"Mike Cawood, HND BIT" wrote in message
...
wrote in message
ps.com...
It is my understanding that in any digital cameras, image processing
is made inside the camera using the image sensor processing engine. In
some advanced digital cameras, they let the users keep the unprocessed
photos (RAW files), instead of the JPG files (which had been processed
by the camera).
My questions are as follows:
- what is the extension file for RAW ? (like .jpg in jpeg files)
Could this RAW files be viewed using any photo viewer software (as
they are, i.e. without interference or retouching from the

The filename extention for RAW is .raw.
You may view & process RAW files using IrfanView
http://www.irfanview.net/
Regards Mike.


I use a Nikon DSLR and the RAW file it produces use the extension .nef which
stands for Nikon Electronic Image File. Generally RAW files such as Nikon's
NEF files are edited in RAW conversion software, then saved and stored as
digital negatives, after which they are converted to tiff or jpeg files for
additional editing, saving, storage, printing or viewing.

RAW files are 4 or 5 times larger than jpeg files so viewing them in viewing
software, if possible, would be a slow going process. For electronic
viewing they should be converted to jpeg.