For a dedicated photographer a camera is often a constant companion. (Perhaps you would prefer constant to congenial.) It is true that companion is not usually applied to inanimate objects, but a dedicated photographer sees his/her camera much the same way a musician sees a favorite musical instrument--almost as a friend.
A couple more possibilities. A camera can:
capture an imageThe grammar problems are distracting. You will have to work on that. You seem to especially have a problem with irregular verbs.
capture a fleeting moment in time
tell a story
Keep writing. I want to see more.