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I need to upsize 8-bit 18MB TIF photos (Canon 10D 6-megapixel camera) to 8-bit 48MB TIF for Alamy.com, using bicubic interpolation in P7.
a. One group of photographers advises stepping up in 110% increments
b. Another group advises 113%–117% increments
Group (a) says doing (b) causes artifacts.
Group (b) says doing (a) causes artifacts.
Which method is best? Is there an even better way, c?
(any artifacts that are meaningless to photo buyers are meaningless to me, too)
Regards.
a. One group of photographers advises stepping up in 110% increments
b. Another group advises 113%–117% increments
Group (a) says doing (b) causes artifacts.
Group (b) says doing (a) causes artifacts.
Which method is best? Is there an even better way, c?
(any artifacts that are meaningless to photo buyers are meaningless to me, too)
Regards.
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