PS keeps changing resolution on me. Why?

R
Posted By
rikstroeb
Aug 5, 2003
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739
Replies
2
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Closed
I like to scan many of my pictures in at, say, 1000 dpi because, as most of you know, you get a whole different look from higher (vs lower) resolution pictures when you run various filters/channel ops on them. Sometimes, however, after I run a filter or three (and I’ve never been able to find a pattern), PS changes the picture’s resolution to 72dpi while concomitantly increasing its size by about a factor of 20X. Sometimes I can <Step Backwards> to the point where the change occurs and proceed anew, but not always; I can also do a rescan, run the same sequence of filters, and everything will stay at 1000dpi all the way through. My big question is why? I could obviously save myself some time and effort if I could keep the 1000dpi resolution consistent from beginning to end.

FWIW I’m running PS7.01 on Windows XP, with an 80GB nonpartitioned harddrive and 512MB ram, and I’m thinking maybe the latter isn’t powerful enough at times to perpetuate bigass resolutions–especially if I’m multitasking.

Any help or suggestions would be appreciated.

Thanks.

rik
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WS
Warren Sarle
Aug 5, 2003
"rikstroeb" wrote in message
… Sometimes, however, after I run a filter or three (and I’ve never been able to find a pattern), PS changes the picture’s resolution to 72dpi while concomitantly increasing its size by about a factor of 20X. … My big question is why?

I’ve never had that happen, but you can change the ppi to whatever you want by choosing Image->Image Size, unchecking the Resample Image box, and typing in a number for the ppi. This does not change the image itself.
E
edjh
Aug 5, 2003
rikstroeb wrote:
I like to scan many of my pictures in at, say, 1000 dpi because, as most of you know, you get a whole different look from higher (vs lower) resolution pictures when you run various filters/channel ops on them. Sometimes, however, after I run a filter or three (and I’ve never been able to find a pattern), PS changes the picture’s resolution to 72dpi while concomitantly increasing its size by about a factor of 20X. Sometimes I can <Step Backwards> to the point where the change occurs and proceed anew, but not always; I can also do a rescan, run the same sequence of filters, and everything will stay at 1000dpi all the way through. My big question is why? I could obviously save myself some time and effort if I could keep the 1000dpi resolution consistent from beginning to end.

FWIW I’m running PS7.01 on Windows XP, with an 80GB nonpartitioned harddrive and 512MB ram, and I’m thinking maybe the latter isn’t powerful enough at times to perpetuate bigass resolutions–especially if I’m multitasking.

Any help or suggestions would be appreciated.

Thanks.

rik
Are you sure your scan resolution is carried into Photoshop? Try opening one you’ve scanned without doing anything to it. It may well report 72 dpi. At any rate the resolution number that matters is the pixel dimensions, not the dpi/ppi. The dpi/ppi number has meaning to your scanner, but it means nothing while woking in Photoshop. You can change it whatever you like but DON’T resample.

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