I came upon this subject in a photography community, where somebody started talking about how to direct unesperienced models, and as usually happens in such communities photographers talk about how better it is to photograph experienced models.
In fact, very experienced models is usually easier to work with. Depending on what you are photographing they don't need much direction. They know very well their best angles, poses, body composition and they catch very fast the mood and pourpose of the image the photographer is after.
Of course I also like to work with experienced models, but my photo shoot style is not like most photographers, trying to catch models poses while they display poses after other. They do like this so they can pick the best they got afterwards.
The way I do is by working on specific poses and ideas for each photo I do. I got an idea for the photo and I want the model to work on the pose in order to me photograph it in a single shot. I don't press the camera shutter realease until I see exactly what I want. Some how, it is easier for me to model unesperienced models for what I want than experienced models.
I supose the reason to be easier for me with unesperienced models is the fact that they don't have standards poses styles catalogued in their memory and experiences. Experienced models very often work on their usual poses that maybe always works for most photographers, since they are poses that reminds what they see in magazines and advertisement. Most photographers and models want results that look like what they see done in the industry.
It also may be the fact that I enjoy directing and modelling models. It is the moment I actually explore the model who I am photographing, one of the reasons I enjoy photography so much.
Whatever the reason is, turns out the less experienced the model, the better I like the results and the more I enjoy shooting. I prefer looking for my models in the streets and amoung people I know, than in model agencies and model communities.
Of couse that experienced and professional does not always mean good model. I actually have photographed many experienced and professional models who I don't found they where good. Specilly if you are the type who look for out of standards.
Actors and Dancers (or models with acting and classic dance background) are the kind of people who I consider much better models than avarege professional photography models. They are much better with face and body expression, poses and movments. At least for my way to photograph and my style of photos.
Avarege profissional models is good for me when I am working on avarege and standards photo look and style. Meaning the comercial look you see around with those poses we usually see, and what they are the best at...
...at least in my opinion.