Blurry Picture 4k in 1080p timeline
Ive shot a video in 4k, and using it FCXP... it looks blurry when used in a 1080p timeline... I have playback set to Optimized/best quality... The footage is shot on a Sony A7rii... ive imported the footage , but not optimised ...? Its weird, when I play it back in a 4k timeline its amazing sharp....when I drop it into a 1080p, it looks slightly blurry. When I stop playback it it goes sharp for a split second and then back to blurry ( blurry as in a little blurred) .. I know there are problems when you have it set to better performance, but this is when set to optimal performance.... its weird how it goes sharp for a split second then back to this slight blur.... its bugging me...as I though the 4k footage would look as good..?
Any thoughts much appriected.?
Imac 4gig graphic card.?
ROB