imagedata

[Wilhelm Sanke]

Another interesting difference between "text" and the "imagedata" of  an 
image is the different file size, e.g.

I have got a JPG file here of 261 KB.

The saved "text" of that file is of the same size - as interestingly is 
the compressed text, too.

The saved imagedata of that image comprises 1200 KB, if compressed 835 KB.

This  difference in size is certainly relevant when you  wish to store 
images in custom properties. However, apparently "text of the image" 
data cannot be manipulated in a consistent way (as Chipp Walters also 
pointed out - we had discussed that a while ago on the Metacard list), 
so for changing images by way of filters of otherwise you have to use 
the "imagedata".

--Wilhelm Sanke
<http://www.sanke.org/Metamedia>