A form of paperwork used to log shots and takes and put down any notes either to the lab or for future organization in the editing stage. There is generally one camera report per camera roll. Camera reports can be used to communicate specific timing requests to the lab (for instance, if a shot if lit with unusual color gels, this can be noted to let the timer know not to correct the color). Camera reports are extremely helpful to analyze any problem with the footage, since they provides a written record of the coverage (the least of which is that if the slate has the wrong information written on it, which happens now and then, a note can be made in the camera reports to keep the assistant editor from getting confused about which take is which).
Glossary of Film Terms - http://homepage.newschool.edu/~schlemoj/film_courses/glossary_of_film_terms/
reprinted with permission