I am about to purchase a Tricaster XD300 switcher which only allows recording in 720 60p and 1080 30i. I will be using an EX1 and up to 2 EX3s. And does shooting interlaced affect greenscreen keying?

Thanks

30i would come out as 15 frames per second. Do you mean 60i? 60i would be fine for talking heads viewed but 30i would probably not be acceptable.

-Garrett

Yes, it should be 60i. Their is a typo on their website in a certain section.

I have always had the best green screen results from Progressive frames, having said that, until I had the EX3 I always used interlaced footage with Canon cameras and got good results, although not as good as progressive.