I'm new to the forum, so I'm not sure if this is the right place to post. At any rate, I have several questions regarding image resolution.
Everything I read says it is best to scan slides at at least 2400 dpi in case you ever want a large print. However, I have found if I scan a slide at 2400 or 3200 dpi and resize the image (using Photoshop Elements 6) for a 4x6 print, this results in a very high image resolution of 540 ppi for the 2400 scan and 707 ppi for the 3200 scan.
My question is, since the recommended print resolution is 300 or 360 dpi (not sure which is best), how will printing at the larger resolutions affect the quality of my prints. Should I resample them to a lower resolution of 300, and if I do, how will this downsampling affect the quality of my prints? (I will print some of these photos on an inkjet printer, but may send some of them out to be printed).
Ultimately, I am wondering which of the following scanning methods would result in the best quality 4x6 print:
1. Scan slides at the 4x6 scanner setting with an output resolution of 300 (or should I make it even higher, say 360, 400, or 600?)
2. Scan at 2400 or 3200 dpi (not sure which is best), resize to 4x6, and print at the resulting high image resolution (540 - 700 ppi).
3. Scan at 2400 or 3200 dpi, resize to 4x6, then resample to a lower image resolution (and if so, how much? 300, 360, 400, etc?
Thanks in advance to anyone who might be able to help me out here!