Using the "Print" function on a digital camera.

Some Coolpix cameras allow a function where an image can be marked for Printing.

This note explains the standard (DPOF) behind this function. 
Please note that Nikon cannot answer further questions on the DPOF format. Many of the possibilities of DPOF (particularly 1.10) specification are provided speculatively for future systems and services.


DPOF - Digital Print Order Format
The DPOF format will record information allowing images captured by digital cameras to be automatically printed through photofinishing print services or home printers, functioning as a kind of digital "order envelope."  Users of digital cameras will be able to select the photos they want printed directly in the camera without using a computer. The DPOF file is written to the camera's removable media (such as CompactFlash™ , SmartMedia™ , and floppy disk) and this information is read by home printers, photofinishing services and software applications.

DPOF v1.00 supported features
(1). Selection of which photos to print
You can specify the image and the number of prints while checking the images on digital cameras.
(2) Electronic print order process
Since the necessary information is stored automatically in the storage device, you do not need to check the file names and paths of images to be printed. Your digital camera shows the preview of the images, even complicated printing like cropping, adding a caption, etc..   Thanks to this function, your printer does not need a preview function, you can make prints without mistake.

DPOF v1.10 supported features (release July 2000)
More than a year has passed since the launch of the DPOF Version 1.00, and a variety of DPOF products such as digital cameras and printers have been introduced to the market . From July 2000 Version 1.10 is released. More functionality has been added:
(1)Multi-Image Print
Multi-Image Print enables you to specify the number of images you want to print on one sheet, which makes it easier to edit albums.

(2) Specifying the size of printed images
You can specify the size of the printed images, so you can use them for a variety of applications, like displays and certificate materials.

(3) Auto Transfer via internet and fax
You can send the image with a message as e-mail by specifying the internet address and fax number with the images.
(4) Auto Play for slide show
You can specify the images to be played back on LCDs of your digital cameras, video projectors and PCs for slide show.

Click the link for a more detailed description of how the DPOF v1.10 file structure works.