Photography/Photo collections

There are many collections of subjects for a Sim to photograph. These are shown in the skill panel after the first subject has been captured from that set. When trying to capture a photo for a collection, make sure that the game gives it the caption for the shot.

Oddly though, all subjects are shown as difficulty 1 except the Doubly Dead which has 5 difficulty.

Plants and Flowers
24 subjects. Pictures of various plants. The common plants can be found around your base Neighborhood, but some require travel to all three vacation destinations. Having the Gardening skill will help.

Architecture and Buildings
11 subjects. There is a problem reported by some player that some rabbitholes are not registered as the subjects of this photo collection, to get the subject you must move your sims to another town and capture the picture there.
 * Game Issue:

Best in Class
14 subjects, luxury items and Sims who have reached the top of their profession

Oh the Calamity!
9 subjects, bad situations make great photo opportunities

Collectables
22 subjects, gems, rocks and relic collections.

Paranormal
13 subjects, mummies, ghosts and death

Sims in Motion
17 subjects, action shots of Sims.

Everyday Moments
25 subjects, everyday life

Home Sweet Home
13 subjects, pictures of objects around the home. A problem has been reported by some players that Home Decor category is listed twice on the list (so it become total 14 subjects) after installed The Sims 3: Ambitions. This second Home Decor category object is any sculpture made using the Pedestrian Sculpting Station.
 * Game Issue:

Still Life
10 subjects, pictures of objects

Travel
20 subjects, all around the world.

Around Town
13 subjects, buildings and vehicles around your home town.

There is a problem reported by some player that some Rabbit holes are not registered as the subjects of this photo collection, for example Brunton's Boxcar Diner is the diner for Twinbrook but when you try to capture the picture, the diner subject doesn't appear. So if the player want to get a diner subject, they must move their sim to Sunset Valley or Bridgeport and capture the picture there.
 * Game Issue:

Family and Friends
10 subjects, pictures of family and friends