Legacy ImageMagick Discussions Archive

This is what I am using: Version: ImageMagick 7.0.8-59 Q16 x86_64 2019-08-05 https://imagemagick.org Copyright: © 1999-2019 ImageMagick Studio LLC License: https://imagemagick.org/script/license.php Features: Cipher DPC HDRI Modules OpenMP(3.1) Delegates (built-in): bzlib freetype heic jng jp2 jpeg ...

Because of the 1000 inch limit imposed by Photoshop, I have to include dpi settings in order for my final image not to go beyond this limit. I've gotten this to work, much in the same way your example reads, but have run into another problem. Turns out IM only supports output of 8 and 16 bit version...

I have noticed (this morning) the same issue with converting EXR images to PSD and PSB. Any color data in any channel above 1.0 is clamped to 1.0. I am converting from half-float 16 bit EXR files. The resulting PSD (or PSB) image is 16 bit with an unexpected 8bit layer error, and clamped to 1.0. Has...

Fred, Thank you for your replies. I tried this: convert -units PixelsPerInch input.exr -density 180 output.exr and that re-sized the image's overall resolution by the equivalent ratio of input/output dpi (eg. 180/72), but did not alter the dpi. You might be right about exr support dpi. I have not fo...

.exr is now an adapted image format for printing. Hence the dpi concern. Plus, some tools like Nuke and photoshop have size limitations and ImageMagick does not. Photoshop has a limit of 1000 inches and will not read-in the image properly (substituting white) with something more. Nuke has a hard-cod...

Just an FYI (and possibly a BUG), none of this dpi stuff works with EXR images. Yes, openEXR assures me that it supports dpi.

Have any of you tried changing the dpi of an EXR image? If you've successfully done it. I would love to see that convert call.

Thanks.
- Jimbo

Don't be too quick to dismiss dpi. Photoshop, for example, has a built-in limitation. It can only correctly display images if the resulting x or y dimension in INCHES is less than 1000. So, if you are using Photoshop as part of your process to completion, specifying dpi is vital to really large imag...

I just tried this technique with an .exr image, and did not get the same results. The image I read in was 10240 x 4542 by 72 dpi. After running this command: convert -density 180 input.exr output.exr The resulting image was exactly the same. I also tried this command: convert -units PixelsPerInch -d...