Re: Just Curious..Or maybe Just a Silly Question

by Sharon <sll(at)chariot.net.au>

 Date:  Wed, 23 Feb 2000 11:22:39 +1030
 To:  hwg-graphics(at)hwg.org
 In-Reply-To:  400
  todo: View Thread, Original


Hi Tim and Everyone that replied,

It would seem that the answer is that I am using JPG's and the program must 
have its own inbuilt compression...

Thanks for the answer.. I was curious to know why :))

Cheers

Sharon

At 06:22 PM 22/02/00 +0000, you wrote:

>Hi Sharon
>
>If I understand the query... you're asking why you can keep the same
>dimensions of a graphic file (xx pixels by yy pixels) but when saved at
>different times it's physical size (in bytes) changes. If this is not what
>you're asking, read no further I've misunderstood...
>
>If it is what you're asking, I presume it is because you are saving the
>images as jpgs, and the compression / image quality ratio of a jpg file can
>be changed. It depends on the s/w you are using... if it doesn't ask about
>jpg quality, it might just use it's own default all the time, it might make
>a best guess.
>
>Fireworks 3 has a very nifty export to jpg option that lets you play with
>the setting to reach an acceptable compromise between file size and image
>quality, with on screen previews.
>
>Hope this helps...
>
>Tim.
>           http://www.ringsoft-designs.co.uk
>
>
> >Hi Everyone,
> >
> >I have a question which may seem pretty simple to a lot of people but
> >anyway here goes:
> >
> >I made some small thumbnails of pictures of animals at the zoo and put them
> >in a table. This went fine, then I linked them to the larger photos and
> >found that they took way too long to load. So back I went to another
> >thumbnail program and thought I would just reduce them to a smaller pic.
> >but larger than the thumbnails on the first page.
> >
> >Am I making sense yet??? Any way after fiddling about for a while I
> >realised I could keep them the same size as the original and just make it a
> >thumb nail and it significantly reduced the size of the file. For instance
> >one went from 273kb to 133kb whilst maintaining the same size picture. To
> >my eye the quality looks exactly the same.
> >
> >Can anyone tell me why the file size reduced when to me it seems I have
> >kept it the same size and quality??? Perhaps the quality has been lost
> >some..but to me it does not appear to have...
> >
> >
> >Sharon
> >

HWG: hwg-graphics mailing list archives, maintained by Webmasters @ IWA