Question regarding print sizes

[Ken Rogers]

I'm about to send off some digital images to an online print service. I want to ensure that the image sizes fit a 4x6 print perfectly. Can anyone confirm that 1200x1800 pixels would be the correct sizing? Sounds obvious to me, but I want to be sure there isn't some tiny conversion factor that I may be overlooking.

Also, would anyone recommend higher than 300 ppi for a professional-looking print?

Ken

[Gary Richardson]

If your images have an output resolution of 300 ppi, then a 4x6 is indeed going to be 1200x1800 pixels in size. 300ppi will give you a perfectly good print, all other things being equal.

[Ken Rogers]

Thanks for confirming that. I know it's a dumb question, but I wanted to be sure. I only wish that measuring lumber was just as straightforward

Ken

[cinderella]

According to what I've read on Dry Creek regarding res for print labs ,
a Noritsu would do best at 400 DPI while a FUji would be best at 300 DPI
Can anyone confirm this or is this just nitpicking. I'm talking about the res of the photo so a 4x6 for NOritsu should be 1600x2400
while a 4x6 for a FUJi would be 1200x1800..
My question would be what happens if you deviate from the above and send a file to be printed as a 4x6 at 250 res or 600 res to either one.
Feeling confused but have confidence someone of you will know how to explain this of just say if it matters.

[cinderella]

PART 2
As I was driving to the post office I thought about my question and that further explanation might help someone clarify the technique for me.
I am scanning in a small photo.My scanner , an Epson Perfection 1660 Photo ,can scan at different res. As far as I can tell from the specs on the Epson web site I can scan up to 1600 dpi without the scanner interpolating.
CCD Res =1600dpi
BUT does it make sense for me to scan a small photo at 1600? Will I really get more pix than scanning it at 600?

What I would like to do is scan it at a higher res then use PS resize to bring it to either 300 or 400 dpi and go with whatever size that gives me. THen i will add canvas to bring the photo to a standard size. Please tell me if I am on the right track.

But if the printers do just as good a job at 250 Res then resizing would give me a larger print.

Thanks for any help.