Costco online resolution warning?

I was going to order some 12x18 prints online today and even though the resolution as stated in photoshop was well above the listed pixel dimensions recommended by Costco I got a warning that the resolution was too low? I called my local Costco and the lady that answered said that as long as the preview looked okay it should be fine. Well sure the preview looks okay considering it's only about a 3x5 inch preview for even a large poster print.

Any suggestions on what I might be doing wrong or if this is a common problem that I shouldn't worry about?

Thanks

You should submit the image cropped at 12x18 at 300 dpi. If you did they should be fine.

What were the pixel dimensions? I can get an excellent 12x18 off 8 megapixels no worries (3504x2336).

Travis Ingle wrote in post #3626823
I was going to order some 12x18 prints online today and even though the resolution as stated in photoshop was well above the listed pixel dimensions recommended by Costco I got a warning that the resolution was too low?

I had the same thing happen. I did everything right and the image had the correct resolution. When I called they said they didn't know why but sometimes their system put up false warnings and if the image was the proper resolution, etc it would be fine. They were right all the 12 x 18 were great.

I get the same warning every time I order a 12x18 or 16x20. Never had a problem, just a glitch in their order system. I talked to the folks at the photo counter but they couldn't shed any light on the problem.

I've had the exact same error happen. Just like Vetkrazy and Entopy06, my 12X18's came out great. Asking the counter people wasn't much help either.
They couldn't even tell me if their Noritsu 3xxx printed at 300ppi or 320ppi. (Experimentation says it is 300ppi)
Print a couple test shots and see how it comes out. At $3.12 for a 12" X 18", it is not too expensive to experiment a little.

Thanks for the info, it's comforting to know that it's just a glitch in the system. Without looking I can't remember the exact size of the photo but it was well over the recommended size for a quality print.