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If you are done with “killlall” command you can exploring the gphoto2. *** Error (-53: 'Could not claim the USB device') *** Is using the device and you have read/write access to the device. Make sure no other program or kernel module (such as sdc2xx, stv680, spca50x) If you are not entering that command you will get this error later An error occurred in the io-library ('Could not claim the USB device'): after this was done you can type this command in your command console: killall PTPCamera The gphoto2 instalation should complete with no errors.Īfter the completion of the instalation, you hsould turn on your Canon camera and plug it to your USB cable to your MAC. The HomeBrew Instalation wil begin, it will install all necessary files for your MAC to be able to run gphoto2. install gphoto2 on your MAC start your command line console and type this command brew install gphoto2

This also apply to LINUX users, which is rare among photographer 🙂 but the tutorial below i will explain only for MAC user, and I consider LINUX user are expert and can install gphoto2 on its own. For MAC user, you can use gphoto2 to check your camera shutter count. There are many methods to get the shutter counts, but you definitely will use a computer either MAC or PC. Please take a note, not all canon EOS camera shutter count can be read out, only recent digic III and IV camera should be able to read out. Wondering how many your canon DSLR camera shutter have actuated? This tutorial will show you how to check your Canon camera’s shutter count.