On Linux, can Entangle or gPhoto2 tethered shooting download only JPEGs while leaving RAW files on the camera/card?
Asked 11/17/2015
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I want to shoot JPEG+RAW on a Canon camera, use Linux for tethered shooting, and only transfer the JPEGs to the computer for quick preview. The RAW files should remain on the camera SD card for later editing. Canon EOS Utility on Windows can do this, but I’m looking for a Linux equivalent. Is this possible with Entangle, gPhoto2, or another workaround?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
10y ago
2 Answers
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Entangle doesn't seem to have any documentation, but it looks like it's based upon the CLI utility, gphoto, which you could call directly so that you only copy the .JPG files. There's a --keep-raw option that looks like it might work.
See also: http://www.giric.com/2013/03/tethered-shooting-with-gphoto2/
Originally by user27440. Source · Licensed CC BY-SA 4.0
user27440
10y ago
0
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Entangle appears to rely on gPhoto2, so the practical route is to use gPhoto2 directly.
Based on the community answers, gPhoto2’s --keep-raw can work when you are triggering capture from the computer with --capture-image-and-download: it can download the JPEG while leaving the RAW on the camera/card.
However, for true tethered monitoring with --capture-tethered, the reported behavior is that it still downloads the RAW as well, then deletes it afterward. So for that mode, it does not seem to provide a clean “JPEG-only transfer” workflow.
In short:
- Computer-triggered capture: likely possible with gPhoto2 using
--keep-raw. - Tethered auto-download (
--capture-tethered): apparently not reliably JPEG-only.
So if your goal is specifically JPEG-only transfer on Linux, gPhoto2 is the closest solution, but it may only meet your needs when shooting is initiated from the computer rather than from the camera body.
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