Hello Armin,
Thank you for using Apple Support Communities.
I see that you are having an issue importing photos from your Canon camera. Since you haven't identified the model of your camera, I would first suggest taking a look at the following support article and making sure that your model is supported by iOS.
Digital camera RAW formats supported by iOS 10 and macOS Sierra
Once you have determined that your camera is supported, then this article will help you make sure that you aren't missing any steps in the import process.
Import photos using Apple camera adapters
Best regards.
Thank you for using Apple Support Communities.
I see that you are having an issue importing photos from your Canon camera. Since you haven't identified the model of your camera, I would first suggest taking a look at the following support article and making sure that your model is supported by iOS.
Digital camera RAW formats supported by iOS 10 and macOS Sierra
Once you have determined that your camera is supported, then this article will help you make sure that you aren't missing any steps in the import process.
Import photos using Apple camera adapters
Best regards.