Welcome!
Members have added photos taken on iphones. (But, I don't use an iphone, so don't have details).
Easiest is to post your photos on a hosting site and then link to them in a thread.
NOTE: in the specific photo sections it is not advisable to add photos to a thread. The forum software has a bit of an issue with that and you can knock out photos from the initial post (until an admin has time to fix the problem).
