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Thread View: comp.graphics.apps.photoshop
3 messages
3 total messages Started by David Gintz Wed, 11 May 2005 01:53
Newbie needs help on JPEG images
#204
Author: David Gintz
Date: Wed, 11 May 2005 01:53
18 lines
2026 bytes
Hi All:

Having just scanned many 35mm slides at 4000 DPI into high quality JPEGs, I 
now want to know how to best change these images for smaller file size (and 
faster access time) for display on PC and eventual burning to DVD.

I've cleaned up and cropped all of the images in Photoshop 7 and like what 
I've got. I plan on keeping the high resolution versions for possible 
printing but wonder what would be a good setting for non-printing purposes.

What would you folks recommend I use? I assume that the way to do this would 
be to make some kind of batch process.

Anyone have any suggestions or set of actions to recommend?

Thanks.

- Dave 
Re: Newbie needs help on JPEG images
#203
Author: CTLouisiana
Date: Wed, 11 May 2005 05:22
51 lines
3301 bytes
Click on the File menu, select Batch Conversion/Rename. A dialog allows you 
to select a directory from which the files will be taken. Use Look in,  File 
name, and Files of type to limit the search.

Select the output directory at bottom right.  If you don't have the full 
path for this directory, click the Browse button to find it. When you have 
selected a directory with Browse, find a directory and click the OK button.

You can set the current directory as output directory if you press the Use 
this directory as output button.

If you want to include all images from sub-directories, check the Include 
subdirectories option.
Batch Conversion:
Select the Output Format at bottom left. This works just like Save and Save 
As. The Options button lets you choose various operations to perform, also 
just like their Save and Save As versions.

Use the Advanced Options button to apply many special operations to the 
images during conversion. These options are much like their versions on the 
Image menu. The options are:

Crop, Resize, Insert text, Change color depth, Horizontal flip, Vertical 
flip, Rotate left, Rotate right, Convert to greyscale

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"Imagination...is the irrepressible revolutionist."


"David Gintz" <dgintz@gmail.com> wrote in message 
news:zcOdnRH9qbYN-BzfRVn-gg@adelphia.com...
> Hi All:
>
> Having just scanned many 35mm slides at 4000 DPI into high quality JPEGs, 
> I now want to know how to best change these images for smaller file size 
> (and faster access time) for display on PC and eventual burning to DVD.
>
> I've cleaned up and cropped all of the images in Photoshop 7 and like what 
> I've got. I plan on keeping the high resolution versions for possible 
> printing but wonder what would be a good setting for non-printing 
> purposes.
>
> What would you folks recommend I use? I assume that the way to do this 
> would be to make some kind of batch process.
>
> Anyone have any suggestions or set of actions to recommend?
>
> Thanks.
>
> - Dave
> 
Re: Newbie needs help on JPEG images
#202
Author: Tacit
Date: Wed, 11 May 2005 14:31
26 lines
2266 bytes
In article <zcOdnRH9qbYN-BzfRVn-gg@adelphia.com>,
 "David Gintz" <dgintz@gmail.com> wrote:

> Having just scanned many 35mm slides at 4000 DPI into high quality JPEGs, I 
> now want to know how to best change these images for smaller file size (and 
> faster access time) for display on PC and eventual burning to DVD.

Just as a side note: For images you intend to archive or to use later, 
JPEG is a bad choice.

JPEG works by deliberately degrading the quality of the image in order 
to make the file size smaller. It is intended for situations where file 
size is important and image quality is not important.

This degredation is cumulative and irreversible. If you open one of your 
JPEGs, make any changes to it, and save it as JPEG again, the image is 
degraded even more, and the quality goes down. Make additional changes 
and re-save it and the quality is degraded still more.

For images where you care about quality, especially images you intend to 
archive for future use, save in a format that is not degraded, such as 
TIFF.

-- 
Art, photography, shareware, polyamory, literature, kink:
all at http://www.xeromag.com/franklin.html
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