 This paper compares two commercially available time-of-flight, TOF, cameras, the SR-4000 from Mesa Imaging AG and the CAMCube 3.0 from PMD Technologies, to evaluate their performance and provide guidelines for testing data delivered by these types of technologies. The authors first discuss the camera specifications and then present two topics, the effect of camera warm-up on distance measurement accuracy and the variation of distance measurement precision over integration time. They find that the CAMCube 3.0 camera has greater distance measurement accuracy than the SR-4000 after a warm-up period of 40 minutes, while the SR-4000 has better precision at longer integration times. Additionally, the authors compare the two cameras and suggest further work on evaluating the effects of sunlight on distance measurements. This article was authored by Folvio Renato and Dario Piatti.