Re: filmscanners: Re: Scanning problems

[Arthur Entlich <artistic@ampsc.com>]

Yes, Dean, a very good point that I missed when I first started using 
PS.  I was "blown away" by the quality of JPEGS PS could produce, until 
I realize that I was looking at the exact same uncompressed image with a 
new name in the title bar.

All the conversion does to the image in memory is change the title bar!
As you stated, the only way to see the jpeg is to close the image down 
and load the newly saved one on disk.

Art

Shough, Dean wrote:

>> I tried this on a 50 MB tiff image. After following your instruction, the
>> histogram shows a single spike adjacent to the left border of the
>> histogram
>> box directly above the black arrow. Adjusting the levels arrows doesn't do
>> anything. All the subtracted pixels are black. What am I doing wrong?
>> 
> 
> 
> One possible problem when doing the comparison between the original and the
> JPEG version is that Photoshop retains the original until the image has been
> closed.  Make sure that you close the image after saving the JPEG, otherwise
> you end up comparing the TIFF with itself.
> 
> If you do:
> 0) Open TIFF
> 1) Save as JPEG
> 2) Open TIFF
> 3) Compare
> you will get no difference.
> 
> You need to:
> 0) Open TIFF
> 1) Save as JPEG
> 2) Close JPEG
> 3) Open JPEG
> 4) Open TIFF
> 5) Compare