Photo Strategies
Scare Photos

One effective strategy is taking in-your-face scare photos. These show raw and unfiltered reactions to the haunted house and actors and often result in hilarious and engaging photos. On the downside, it typically results in a lot of unusable photos and missed photo opportunities. And sadly, many of the best photos go unpurchased because of people not liking how they looked. This is a great option, but is not always the best option.
Posed Photos

Another common and effective means of taking photos is taking posed photos. Using this method typically results in fewer photos taken/uploaded and a higher conversion rate on those photos. However, it often requires a dedicated photographer and more time for each group. High volume haunts could make this more challenging.
Triggered Photos
Automated photos are another route that can be considered for your photo strategy. Companies such as FrightProps produce electronic triggers that can be used to take a photo when a customer enters a room, steps past a light sensor, etc. This strategy can give you a very repeatable and consistent output without needing a dedicated photographer on site. There will be a higher up-front cost and more time spent configuring things correctly, but the final results should be worth it.