Subject: Re: Glen Bredon - In Memoriam
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From: cturley2@aol.com (Cturley2)
Newsgroups: comp.sys.apple2
Date: 20 Aug 2000 06:46:28 GMT
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Message-ID: <20000820024628.06774.00001536@ng-cg1.aol.com>



On 17 Aug 2000 05:42:43 GMT, cturley2@aol.com (Cturley2) wrote:

>I do have a question and I'd like some feedback on about this.  All of Glen's
>digital photo files are in the (rather bloated and very large - about 8 to 27
>MB's each) Photoshop v5.0 file format.  It seems to me that using a deduced
>compression format with them - like converting them to gif and jpeg files 
>using program like the Mac PPC Debabelizer, could vastly reduce the size of 
>the files without any noticeable loss in viewing quality.
>
>Does that sound like a reasonable thing to do with them for online viewing?  I
>conclude the main reason they were saved in the Photoshop format seems to be
>so Glen could print them out on his printer with virtual photographic quality.

>There's really no need to keep them as such
>for online viewing and downloads is there???

<<Yes, compressing them as JPEG files would be a good idea.  If they are
very high resolution, which seems likely based on the file sizes, it
might be a good idea to reduce the resolution as well.

I would avoid GIF format as that format only supports 256 colours.
Unless the originals have 256 colours or less, I wouldn't use this
format.  Personally, I only use this format for things like graphic
bullets, icons and animated banners and such in web pages.  It is also
good for line art and scanned text as the compression used doesn't
alter the image at all.

JPEG supports 16.7 million colours and gets better compression.  You
have to be careful with the compression level, though, as the
compression used does alter the image.  That is how it gets such good
compression levels.  It doesn't worry about accuracy in the image and
just gets something close.  If you turn up the compression too much,
the image quality starts to go down.

I hope this helps.  I'm not the most knowledgeable when it comes to
graphics but I'm sure someone could give you some information about
dots per inch to strive for in case people would like to print Glen's
pictures.>>

Glen was very good with the Adobe Image Ready app and saved a 300 dpi
full set of his photos in 16.7 million color jpg format.  Great images, ready 
for print and most are no more than 60 to 70K at the max!  A few of the single
digital graphics I found on his HD are in gif format and not as good as the jpg
files - but, I've been using the Debabelizer v3.0 app on my PPC now for a long
time and it can do wonders with enhancing gif files and conerting them to jpg
format.  It even has the option to convert them directly to IIgs SHR 3200 file
format.  

For a small sample of the best of his photo's check out this URL:

http://www.grin.net/~cturley/Glen.Bredon.In.Memoriam/Glen.Bredon.Photography

Cheers,
Tom

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