Syn & Anilr16 - Generally when someone is looking for ID help, they don't need people who don't know the first thing about IDing these cham species to throw out complete guesses. This animal looks nothing like a wiedersheimi, quadricornis or cristatus. Additionally, if you knew the first thing about T. feae you would understand that this species is extremely similar to T. montium and its of no help if you guess T. montium without even knowing what morphological features differentiate T. feae from T. montium.
Benny - I just checked out my first and second edition of Francois Le Berre's "The New Chameleon Handbook" and as mentioned, this photo is in the book labeled as "Chamaeleon montium feae". The coloration of this animal is indicative of a male rather then female and the photo in these books includes the tip of the nose. The nose lacks rostral horns and thus, it appears to be correctly identified as T. feae. Since this is a published photo, however, and not a photo of an animal actually taken by this guy in Cameroon, I would not say the fact he has this photo indicates he is able to supply true T. feae as opposed to just T. montium.
Chris