The biggest problem I find with working in the studio is that the photography consists of making an image, as opposed to finding one. Working indoors with available light, however, is a different matter.
When the variables of lighting and setting are predetermined and for the most part beyond my control, it is far easier for me to work; making images with available light quickly becomes more about revealing them from of all the potentials already present. In some ways, this process is analogous to editing the images in advance of making them; working with available light indoors involves a great amount of searching and exploration before a single image is created. The work tends to progress slowly; the results usually are more refined than the majority of my outdoor work.
One positive aspect of working indoors is that I often have the luxury of time, being able to compose and tweak an image to perfection. In the great outdoors, there are often other spaces and possibilities demanding my attention that promotes a quicker approach to imaging. The difference between working in the two spaces is a world apart for me.