Canon EOS C300 Mark II PL CINEMA RAW DEVELOPMENT INSTRUCTION MANUAL Version 1. - Page 6

2.4 Choice of Lens Mount The EOS C300 Mark II is delivered with a standard Canon EF mount. This mount can be removed (at a Canon service center) and be replaced by a choice of the standard PL mount or an alternative EF mount that has a positive locking system. Figure 7 Showing the available choices in lens mount for the C300 Mark II 2.5 Innovative Cooling System The broad experiences gained with the first generation C300 emphasized that these camcorders are often subject to severe environmental conditions. The C300 was unusual in its quite low overall power consumption - totaling less than 5 watts during recording - and its cooling system proved adequate. The C300 Mark II consumes more than twice the power of the C300 (because of more powerful video processing and greatly extended on-board recording capabilities), and accordingly, a more sophisticated cooling system has been incorporated. Diecast parts increase the diffusion of heat and the forced-air cooling system has been enhanced with two fans that ensure the discharge of the hot air outside of the camcorder body - Figure 8. Figure 8 The main circuit board and power supply generate almost 90% of the heat and two cooling fans drive this out of the body 5