Part of a 12-hour film project (written, directed, filmed, edited, scored and mixed in 12 hours). We shot with both a 5D with the 70-200mm f/4 and a 7D with the 85mm f/1.8. They cut together quite well despite the 30fps / 29.97fps issue, although we did have some color balance matching due to the ND filter on the 85mm. Audio was recorded with a JuicedLink CX231 on the 5D with Magic Lantern (+0 dB analog, +6 dB digital). Rack focuses were with the Cinevate Durus follow focus.
No overheating problems with the 7D, despite three hours of principal photography in the South Carolina heat.