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H
HeadshotsPro
Known Participant
November 17, 2012
Question

Reduced dpi from 300 to 72 saved in new file results in reduced size but not dpi

  • November 17, 2012
  • 2 replies
  • 28384 views

I use action macro to reduce 8x10s @ 300 dpi to 72 in a subfolder sent to clients by web for them to evaluate and choose preferred images.  However, they get 2x3 images at the original dpi, so what they see on their monitor is too small to see differences.  If uploaded to facebook etc. images look muddy.  What am I doing wrong?  Large files typically exceed Yahoo max. What can I do right?

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2 replies

DrStrik9
DrStrik9
Inspiring
November 17, 2012

You can check your Action to see if it's doing this:

Image : Image Size

Than just replace the 300 with 72. And leave the image dimensions the same (8" x 10").  Voila.

H
HeadshotsProAuthor
Known Participant
November 17, 2012

Thanks for trying to help. Yes, this is what I do.    It occurrs to me that maybe I'm pulling up a cache file rather than the one where I've just changed the resolution number and "saved" it to the new file.  I've tried fixing the problem by re-doing the step you describe here for each file, not using the action macro.  No luck.  I save and close the "72" and when I reopen it I still get the 300 number and the 2x3 wide/high rather than 8x10. Thanks in advance for any more suggestions.

Mylenium
Mylenium
Legend
November 17, 2012

Not sure what you are saying. DPI is meta. It's a concept that maps pixels to physical realworld units and viewing images on which you have reduced the overall pixel count in "dumb" viewers that don't care for DPI flags will display them 1:1 and may in fact dispaly the DPI info wrongly or based on their internal, arbitrary settings. or in otehr words: 100 pixels at 300 DPI are still only 100 pixels at 72DPI, but 1cm at 300 DPI contains 300 pixels while at 72DPI 1cm only contains 72. Reducing the pixel count will of course also reduce detail due to interpolation. Add to that JPEG compression and it's not gonna get better. So more or less, everything is as it should be based on your description. If you want them to be at ful lsize and contain the full details, then don't make them smaller. It's as easy as that.

Mylenium

H
HeadshotsProAuthor
Known Participant
November 17, 2012

Thanks for responding to my post.  I downsize the files because, typically, I'm sending ten or twelve 8x10 headshots to a client for him to select one preferred.  I do the original work @240 or 300 pixels/inch and then go to "image/size" and change the number to 72, since if I leave it at the larger number Yahoo won't accept such a large file, much less ten of them.  With CS6, I seem to be getting the actual dimension of the image downsized when I change the resolution number even when I leave the size alone.  Could I be pulling up a cache file and not the actual file I just worked on?  Could my installation (by downloading, not a disc) be faulty?

H
HeadshotsProAuthor
Known Participant
November 17, 2012

P.S.- the odd resizing of the dimensions rather than the resolution change occurrs when I save the file into a new folder.  When I press "save" everything on the monitor drop down is as I want it.   Again, I do appreciate your helping me with this very much.  Thanks.

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