winterhawke

I have encountered an issue working in PS that I seldom run into in Illustrator and I'm hoping
one of you wizards has the solution. Here's the problem. I'm designing a multi sized piece completely in PS. It's to be 8-1/16" x 10 1/14" ( standard 34'flexi web page size) with 6/16" bleed. I planned on doing it at 300 PPI for a 120 LPI frequency. This isn't the issue. The issue is, I will be needing a duplicate of this page for a smaller format printing at a frequency of 150 LPI. Consequently, I'm stuck trying to figure what PPI to use because I simply don't know the reduction parameters. There must be a formula out there, but I can't find it. ( you can reduce 320PPI to 25% but if you reduce it to 33% it looks pixelated. Also, which image interpolation is best for reducing an image? Thanks