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Image Ingester/DNG Converter

Discussion

3 replies
Posted by Rob Haman on November 2, 2008 at 8:17 AM
I'm using this combination to download my images and convert them to DNG. One of the programs is outputting the images at 240 dpi and I'd rather it was 360. There doesn't seem to be a user setting for this that I can find in either. The difference probably isn't much for general printing but there surely would be some quality issues of having to re-sample to 360 which is the native resolution of my printer.

Any ideas? or maybe I need to rework my workflow around this

Rob
Posted by Robert Fisher on November 2, 2008 at 8:41 AM
Make two prints. One at 240 and the other at 360. Stick them both on a wall and look at them from normal viewing distance. Can you tell a difference? I'm betting you can't. Stick your nose right on the prints as well. I'm going to guess you won't be able to tell much of a difference, if any, then either.

If you're really concerned about it and there's nothing in the Image Ingester program that you can change, then write an action and add a batch process into your workflow. I really don't think it's necessary though.
Posted by David Bostedo on November 2, 2008 at 11:48 AM
Rob - You're talking about RAW files, so the programs you're using shouldn't be doing any up or down ressing; The pixel resolution of the input and output files are identical, right?

In that case the DPI setting means absolutely nothing. It's completely meaningless. For instance, if the image is 3000 pixels x 2000 pixels, it doesn't matter if you set the DPI to 240, 2400, 24, or 1. The image will still be 3000x2000, and the DPI will be determined by how large you print it.

If your flow here IS resizing the photos during conversion to DNG, I'd say you have to find a way to turn off the resizing, or not use the program.

Odds are, though, that the program is simply changing the DPI setting in the EXIF info (which is meaningless) and that's what you're seeing.
Posted by Rob Haman on November 2, 2008 at 12:09 PM
OK, thanks guys-just something I got thinking about this morning.

Robert, your Goal of Life statement is very amusing...and true!