Seems like questions about the preview window are pretty popular lately... so here's another one.

This is a question about the preview window vs masking.

When I try precisly masking a moving object in the event pan/crop window every frames are clear and precise and my mask is perfectly drawn around the object. but when I look in the preview window the mask is not as precise as if the preview window is out of sync with the event pan/crop window, looks like my mask was made a frame before.

Is there anything I can do to prevent this?

Thanks!

Make sure that your preview window is set to full resolution when doing masking or other work that requires precise placement. Otherwise it will approximate to keep the frame rate up.

~jr