I didnt know that. Thats a nice tip, thanks. But I am more interested in getting more “headroom” in color grading. Some people say transcoding might help. And this is the main reason I want to try.
BTW, I just tried export to MOV (Avid DNxHD, 25p) in Mpeg Streamclip and this can be opened in Vegas, but Vegas tells me that the video is interlaced. I dont know why (my original video was progressive).