Sorry to be a wet blanket, but facebook is the last place you
want to post pictures unless you're not concerned about the quality of reproduction.
Facebook Image Quality Issues
Something to be aware of is that Facebook compresses some images pretty aggressively when you upload and display them.
It makes sense–naturally, they want to speed page loads and reduce bandwidth by applying as much compression as they can get away with. I’m not the only one to wish they’d be less aggressive with their compression, but how noticeable it is will depend on whether things like the range of colors in your image and amount of detail in your photo.
Facebook never intended to be a high quality archiving service of photos, but rather, photos act as social glue for the social media giant.