Differences

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--- live_capture [2017/06/25 14:12] – walkeradmin
+++ live_capture [2023/03/09 22:35] (current) – external edit 127.0.0.1
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 ====== Live Capture ======
+<color darkorange>Jun 2017</color>
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-Now, this depends on your camera, and whether gphoto2 supports it on your model. To get the capabilities of your camera, use the following command:
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+----
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+<color #ed1c24>WARNING!!!!</color> If you came to this page without looking at the [[live_capture_setup|Live Capture Setup]] page, then shame on you! You will probably find that capture does not work properly because you didn't do something very important, mentioned in the [[live_capture_setup|Live Capture Setup]] page :)
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+<color #ed1c24>Plese read this next section, it's quite important.</color>
+----
+<color #ff7f27>It seems</color> <color #22b14c>gphoto2</color> <color #ff7f27>has an issue if the shutter speed is slow. So using a shutter speed of say 1/250, then I can capture and download a file. If I use a shutter speed of say 3s, then I can capture, but download simply won't happen.</color>
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+On the 700D, 1/6 seems to be the cut off, if you go to 1/4, then you lose the ability to capture and download in a single command. You can of course capture, execute a wait equivalent to the shutter speed (plus a bit for writing to the card) then do a download using the <color #ed1c24>--skip-existing</color> so you only download files that have not already been backed up.
+----
+\\
+\\
+Now, this depends on your camera, and whether <color #22b14c>gphoto2</color> supports it on your model. To get the capabilities of your camera, use the following command:
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     gphoto2 --summary
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     gphoto2 --capture-image-and-download
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-<color #ed1c24>gphoto2 --trigger-capture</color> takes a photo and stores it on the SD card.
+<color #ed1c24>gphoto2 --trigger-capture</color> takes a photo and stores it on the SD card.\\
-<color #ed1c24>gphoto2 --capture-image</color> takes a photo and stores it on the SD card.
+<color #ed1c24>gphoto2 --capture-image</color> takes a photo and stores it on the SD card.\\
-<color #ed1c24>gphoto2 --capture-image-and-download</color> takes a photo and stores it on the SD card and downloads it.
+<color #ed1c24>gphoto2 --capture-image-and-download</color> takes a photo and stores it on the SD card and downloads it.\\
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     gphoto2 --list-files
-\\
 <file>
 There is no file in folder '/'.
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     gphoto2 --capture-image
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 We can now again check the camera memory card:
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     gphoto2 --list-files
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 <file>
 There is no file in folder '/'.
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+If you wish to download and keep the files (this took a couple of attempts for me) then you can use the following syntax:
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+    gphoto2 --capture-image-and-download --keep
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+And to go back to just downloading the files, you can use:
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+    gphoto2 --capture-image-and-download --no-keep
-On some cameras the <color #ed1c24>takes a photo and stores it on the SD card</color> takes the image, but does not store it on the SD card (like on my 700D) so you can use <color #ed1c24>gphoto2 --capture-image-and-download</color> and the camera will take the photo and gphoto2 will download it, but it will still not be store on the SD card (does not work on my 700D)
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-So in summary, I have been able to download files from my camera(s) but not capture from them. So I can make a decent backup solution using gphoto2, but not an intervalometer.
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-Cameras tested so far:
-\\
-<file>
-Canon EOS M (the original)
-Canon EOS 550D
-Canon EOS 700D
-Canon EOS 5DMk2
-</file>
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