||Top Ten Digital Photography Tips|
Response to: Picture Resolution
I would suggest saving an origional digital image master in the highest resolution and dpi possible. I usually import and save mine in photoshop elements. If you are printing on your own photo quality printer, I like to stay around 240 dpi as a guideline. On most 5 mega pixels cameras you will maintain at least this dpi even after cropping. Multiplying your height by width will give you the desired resolution guideline. (example 5 x 7 photo is 1500 by 2100 at a 300 dpi resolution. I upload some of my shots to mpix.com for professional prints and have found the same guideline to be sufficient for lab quality prints.
Here's a not for those of you who use the Fuji photo processing machine at Wal Mart. IT DOESN'T RECOGNIZE ANYTHING OVER 300 DPI. You are wasitng your time trying to print anything with any greater dpi than that. Hope this helps.