Lossy means the compression involves
throwing away some of the data. Lossless means the compression is
done while keeping all the data. An example in the world of audio
files would be mp3 for lossy and flac for lossless. As to your
question about tiff, someone else will have to answer that.
On 10/5/2012 23:01, Michael Havens
wrote:
thanks. that brings up another question: what is lossy or lossless ?
if tiff is the best why is it not resurrected by users?
:-)~MIKE~(-:
The recent thread on png vs jpg might provide some
helpful information. I'll try to give a brief answer.
Jpeg throws away much of the information contained in the
picture. If you just want to look at the picture but
don't want to edit it, jpeg should be ok.
Png doesn't throw away any of the data, but compresses it
so none of the data is lost. This makes for a larger
file, but a better choice if you want to maintain quality
after editing the file.
Gif is an old format dating back to 1987. It's 8 bits per
pixel so you only get 256 possible colors.
Also anything I've read about tiff says it's preferred by
professionals especially when they're going to edit the
result. A tiff image can be uncompressed, or compressed
using either lossy or lossless options.
I would suggest saving anything you're editing as an
uncompressed tiff file while you're working on it.
I have a 10 megapixel camera that saves pictures as jpg
files. I've taken several pictures to walmart to have
them printed, and they look fine.
No doubt by the time the weekend's over, you'll get some
useful information.
bye
Derek
On 10/5/2012 16:08, Michael Havens wrote:
I'm delving into GIMP. What is the best
save format? JPG, GIF, etc...
:-)~MIKE~(-: