Speaking of upsizing...

[srwatters]

Chase wants a couple 24x36" poster size images from our shoot. With minimal cropping I have 1870x2804 to start with (78 ppi). I've read that both bicubic smoother and bicubic sharper can provide good results. Since I need to get to 4320x6480 (180 ppi), would you suggest multiple resizes or one big jump? The images will be framed on a wall, so I doubt they will be viewed from less than four or five feet.

Suggestions?

[PeteQ]

Scott, FWIW the new Kelby PSCS2 photographer book recommends bicubic sharper....

[srwatters]

Originally Posted by PeteQ

Scott, FWIW the new Kelby PSCS2 photographer book recommends bicubic sharper....

But a single resize or multiple smaller passes? And what about the fractal stuff that looks at 4x4 pixel range instead of just adjacent ones? Hmmmmm.

[billbunton]

If you're going to use bicubic sharper or bicubic smoother, you should be doing it all in one shot. Bruce Fraser says bicubic sharper is for downsampling, bicubic smoother is for upsampling. I've tried sharper for upsampling, and never liked the results.

Bill

[PeteQ]

Sorry Scott, the new book says all in one shot, the older books used to say 10% increments (110%)... I have used both to test them out and they seem to print ok. Just like sharpening, you can get away with more if you are going to view the print vs. the screen I guess...