So far you have picked infrared flash and slow trigger speed. The next step is Detection zone. The Detection zone of a camera is influenced by how wide a Trail Camera will detect movement.

     For instance, Reconyx cameras have a wide detection zone.  They will detect movement as soon as an animal comes into view.  The upside is, you will get things that do not come into the center of view, giving you more opportunities at more animals.  The downside (if there is one) is cameras with wide detection zones will take more pictures, use more batteries and will fill memory cards quicker. 

     On the other hand, Cuddeback cameras have narrow detection zones.  Animals must be directly in front of the camera for a picture to be taken.  The most obvious downside of this is that you miss out on the animals that never wander into the middle of the camera.  The upside is that of the pictures you have, the animal is much more likely to be in the middle of the picture. 

      Here is an example of what detection zones do.

Cuddeback Cameras	Reconyx Cameras