Greetings Tony,

For a better understanding of resolution, I suggest you review an excellent
article on the subject. Please visit the Digital Dog website -

[url]http://digitaldog.net/files/Resolution.pdf[/url]

On this Wepage you will find an article by ANDREW RODNEY "Resolution." It
will help in your understand more about resolution in general and how it
applies to digital imaging.

If you do not have an Acrobat Reader installed to your system, please go to
the Adobe website, download and install this feature.

[url]http://www.adobe.com[/url]

The reader will let you review many PDF files that you will find on the
World Wide Web. It is free and used widely.

Hope this helps, I found it an excellent review.

Ron Baird
Kodak


"Tony W" <someone@home.com> wrote in message
news:3f083c30.16702887@usenet.force9.net...
> Hi,
>
> Being new to digital photography I have started to take more notice of
> image resolutions.
>
> When I take a phoo at 1600 x 1200 with a resolution set to 300 dpi
> with my camera I get an image that has these values stated in the
> properties when viewed from MS Explorer.
>
> If I change just one pixel on the image to enable a save, the
> resolution is reduced to 72 dpi. This also happens with PSP v8.
> I have not been able to find a default save setting for dpi and I
> don't select the reduced resolution.
>
> Can anyone tell me why this happens please. Just because I need to
> rotate an image, I don't want to loose the high resolution.
>
> Many thanks for any views or information on this subject.
>
> Tony W