For 4:3 should I be saving work as 960p or 1080p?

[Daniel D. Teoli Jr.]

Almost all the film I work with is 16mm archival material in 4:3 ratio. I've been saving work both as 1920x1080 (16:9) and 1280x960 (4:3).

Is there any benefit to saving it in 1080p? Should I drop the 960p and stick with 1080p?

Thanks

[Tyler Purcell]

Yea I would try to save at a proper standard, 1080p would be that. Where 4k scans for archival would be best, if 1080p is all ya got then yea, stay there. 

[Daniel D. Teoli Jr.]

OK, thanks.

[Robert Houllahan]

for 1.33 / 4:3 material I would advise1440 x 1080 at the minimum, anything less than 1080 vertical resolution is N/G really.

I know some places offer 720P scans but I think that is not very pro of them.