Sending us files over the Internet is simple with our ePhotoPros FTP Client. All you need to do is sign up for an account, create a username and password, and then download and install the FTP Client software. PC and Mac compatible. All images must be: RGB - no grayscale or CMYK sRGB color space Standard jpeg - not progressive 8 bit All orders will be printed on luster unless specified otherwise. Normal turnaround time is 24 hours. All images need to be in folders with the folder name stating the size and quantity you want.