Sims 4 Photography skill.

Okay, so I got the Sims 4 Get to Work a while ago and I've had nothing to complain about. This isnt a bug as such, just something I've noticed that I need a little help with. One of my sims took up Photography when he started a family with his fiance, he took a bunch of pictures of the wedding, the pregnacy, his pregnacy with an alien baby (!!!) and then baby pictures and pictures of the two kids growing up. I noticed that I couldnt seem to control the exact size I want which was quite frustrating. I had a couple very small pictures but they were from different media (one from the photo set and another just taken from a camera), and the rest were all medium. His daughter (currently a teen), I now want to open a Retail shop for photogaphy so I started her up with the skill, (her dad didnt get very far becasue he wasnt too serious about it) anyway she took a bunch of photos of her and her friends and a couple of her brother in alien form and some scenic photos and I had her put the pictures up on her bedroom wall. It looks pretty cool but they are all medium and I cant seem to figure out how to make the smaller or larger. I've tried using different standard cameras, her phone ect but they all come out medium, this is the same no matter what 'size setting' I put it on (bottom right of the screen when positioning the camea.) Is there something I'm missing? Am I just being stupid and not seeing something obvious? Is this a bug? Anyone else had the same issue? Can anyone tell me what to do? 🙂 I'm new to this website so Im not quite sure what Im doing to be honest. :P -A x