Upscaling photos for print
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- kushman
I've got a print job on which requires printing the same design at a range of sizes. (A3, A1, A0)
I've got to use stock photography for the main image, which will cover the entire canvas, but what's the minimum stock photo size I can get away with using?
Most stock I've found comes in around 482mm x 726mm which is in the region of A1. Can this be upscaled to A0 without looking too horrendous?
BTW - these posters are being digitally printed. I don't know if that's changes much?
- doublespaced0
Posters are viewed from feet away, as opposed to inches for a printed sheet. Hence, resolution won't be a problem. Cheers.
- goldieboy0
If in doubt, call your printer. He'll tell you how much you can push it
- kushman0
Nice. Thanks for that, maybe I don't need a ram upgrade after all!
- vaxorcist0
tweeking what photographers call "microcontrast" can help, i.e. selectively sharpen edges of hard lines, eyelashes, eyebrows, and such after you upsize can make medium-res images look much sharper from a few feet away without giving you the grainy-ville horror....
- do NOT overdo this approach, it will look cartoon-likevaxorcist
- Roberthannink0
When i need to upscale images for posters or billboards i use "stair interpolation" in PH. With a minimum required of course.