I’ve had a fairly lukewarm relationship with google+ photos, firstly it took over simple and easy to use picasa’s web albums, google then added a numbers of changes that are supposed to wow me but they are at best hit and miss. The most frustrating of which is the so called auto backup. Ok I was never using it as a true back up system (because I can see no reason to do so). So I have now turned off the two default backup sources in the Google+ backup setting (shown on left) and added a new location that is a place I can just load those items I want to upload, perhaps to see if an auto-awesome is possible or what short of auto-enhancement might be possible. I suspect I will not be using it much, in which case I can confidently delete google+ autobackup in a few weeks.
Even though auto backup does load photos, it doesn’t organize them, (except by the upload data) so you still have to manually move them to albums, one at a time. It is much easier to upload them directly from picasa, into either an existing album or create a new one. you can also set up the sharing as you upload from picasa, (but with the no sharing as a default) rather than having to share after the upload as in google+ autobackup.