saved file has 1 dpi resolution

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smroid
Posts: 4
Joined: May 22nd, 2020, 12:45 pm

saved file has 1 dpi resolution

Post by smroid »

I'm using 8.0.103

When I save an image (jpeg or tiff) and examine the file's properties in Windows explorer, under the Details tab the horizontal and vertical resolution are both 1 dpi, regardless of the dpi I set in 'resize' or 'export' transformations.
jsachs
Posts: 4455
Joined: January 22nd, 2009, 11:03 pm

Re: saved file has 1 dpi resolution

Post by jsachs »

Not seeing this here, I may need more details to reproduce the problem.

1) File Save or File Export or Export transformation?
2) What type of file were you saving - 8-bit or 16-bit? black & white or color?
3) What was the dpi of the file you were saving?
4) What were the File Save Options - with or without metadata? converted to 8-bit? ...
Jonathan Sachs
Digital Light & Color
smroid
Posts: 4
Joined: May 22nd, 2020, 12:45 pm

Re: saved file has 1 dpi resolution

Post by smroid »

1. Save As (though happens with export as well)
2. 8-bit jpg, color
3. 96 dpi
4. metadata: all; don't include script; jpeg quality 98.6; subsampling 4:2:0

I'll try again with latest version.
smroid
Posts: 4
Joined: May 22nd, 2020, 12:45 pm

Re: saved file has 1 dpi resolution

Post by smroid »

Problem still occurs with .108 version.
jsachs
Posts: 4455
Joined: January 22nd, 2009, 11:03 pm

Re: saved file has 1 dpi resolution

Post by jsachs »

Thanks for the additional information -- I was able to reproduce what I think was causing the problem and I believe I have fixed it for the next release.

While I am not seeing 1 dpi here, when I open a jpeg file, change its dpi, and save it as a new jpeg will All Metadata, when I reopen the file, it shows up with the old dpi setting and not the resized version. If I save with No Metadata, the correct dpi setting shows up when the file is reopened.

When you select All Metadata, I use ExifTool to copy the metadata from the original file to the saved file, and Exiftool is copying the dpi setting (which is considers part of the metadata) from the original file after saving the modified file. While I have ExifTool configured not to copy the EXIF dpi settings, it turns out JPEG files have a second JFIF dpi setting that was still being copied. After telling ExifTool not to copy this second setting, it seems to work OK. This problem does not happen with TIFF files which have only one dpi setting.
Jonathan Sachs
Digital Light & Color
smroid
Posts: 4
Joined: May 22nd, 2020, 12:45 pm

Re: saved file has 1 dpi resolution

Post by smroid »

Works for me now, thanks!
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