Crop and Zoom for Removing Vignette from TV lens footage

P

pomoville

Well-known member
I've got some footage that I shot with a 2/3" tv zoom lens, with the intention of cropping a 720p section from the 1080p file (to remove the vignette.) Looking at it in premiere pro, it occurs to me that, in a 1080p timeline, I can use the crop function to cut 5% or some from each side of the image (removing the vignette,) and then check a box to stretch the image to fill the 1080p frame.

Will this give me reasonable quality? It looks pretty good to me, but I'm not sure. The alternative, I guess, is to drop the 1080p file into a 720p timeline, but if it were more or less the same I'd prefer not to cut that much out of the frame -- cropping to 720p means cutting out 1/3 of the image, while taking 10% or so is enough to lose the vignette.
 
pomoville said:
I've got some footage that I shot with a 2/3" tv zoom lens, with the intention of cropping a 720p section from the 1080p file (to remove the vignette.) Looking at it in premiere pro, it occurs to me that, in a 1080p timeline, I can use the crop function to cut 5% or some from each side of the image (removing the vignette,) and then check a box to stretch the image to fill the 1080p frame.

Will this give me reasonable quality? It looks pretty good to me, but I'm not sure. The alternative, I guess, is to drop the 1080p file into a 720p timeline, but if it were more or less the same I'd prefer not to cut that much out of the frame -- cropping to 720p means cutting out 1/3 of the image, while taking 10% or so is enough to lose the vignette.
Click to expand...

How about shrinking the image on the 720p timeline to get more of the frame in? You shouldn't notice much (if any) loss in quality that way, rather than stretchint an image where you'll always lose quality.
 
Seems to look more janky by shrinking the image in 720p than it does cropping and zooming, for some reason.
 
shrinking 1080 down to 67% fills 720. so try scaling down to 70% maybe or accordingly to get rid of that 10%
 
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