Photoshop fire effects can be easily obtained using fire brushes. The realistic fire or flame brushes are made using fire stock images and their quality is very important. To obtain a decent looking flame brush, the fire image has to have a black black background. Or the person that makes the brush has to be very patient and crop the fire shape carefully.
Beside the realistic fire brushes, I have also added some abstract fire flames that are great for creating tattoos, T-shirt design and so on. So if you want to add fire in Photoshop you can do it in no time using these great brushes. To help you even more I am planning to gather a list with fire Photoshop tutorials to see these fire brushes in action. So stay tune!