duplicate negative การใช้

Preservation standards require a master negative, a duplicate negative, and a service copy ( positive ).
Prints from the original negative might be distinguishable from prints made from a duplicate negative, to avoid wearing out the original.
Melissadolbeer has subsequently engaged in extremely peculiar edits bordering on harassment, duplicating negative comments from my talk page in their own talk page-
Master negatives are kept in deep storage, and duplicate negatives are used to create service copies, which are the copies available to researchers.
Under the LAD system, Kodak created many duplicate negatives of a single China Girl and provided them to laboratories to include in their standard leaders.