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~(-:
>
>
> On Fri, Oct 5, 2012 at 5:53 PM, Derek Trotter
> <expat.arizonan@gmail.com <mailto:expat.arizonan@gmail.com>> wrote:
>
> 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~(-:
>>
>>
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> - Fred Dibnah
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