This has been driving me crazy. I've been trying to render out a shot at a very wide focal length, about 8mm. When I render, the first frame renders at 8, but then every frame after that renders at 10mm. I've done some trial and error for different focal lengths and it seems that below 10mm it renders frame 1 normally, then defaults back to 10 for the rest. Does anyone know what is happening, or is this just a limitation?