panorama: A broad view, usually scenic. Some digital cameras also have a panorama mode used with software to stitch the images together.

parallax error: The difference in views between the lens taking the photo and the external optical viewfinder.

pass-through device: A device attached to your computer that allows another device attached to it to register on the computer and be used as if it was directly connected to that computer.

PC Card: A type of removable memory card used in some digital cameras. Also called PCMCIA Card (PCMCIA stands for Personal Computer Memory Card International Association).

phone cam: A digital camera built into a cell phone.

photo printer: A full-color printer that can produce photo prints.

photon: A particle of light.

PictBridge: A universal standard that allows digital cameras and photo printers to connect directly by USB cable, without the computer serving as a middleman. Any PictBridge camera can connect to any PictBridge printer, regardless of whether both are made by the same manufacturer.

PIM: Print Image Matching. A proprietary Epson camera technology that saves image information to assist in printing a digital image more accurately.

pinhole camera: A camera whose lens is covered except for a pin-sized hole. You have a very small aperture, so you have to shoot long exposures.

pixel: Short for picture element. The basic building block of every image.

plug-in: A small program or utility that runs within another, larger program. Many special-effects filters operate as plug-ins to major photo-editing programs such as Adobe Photoshop Elements.

PNG: A file format designed to work well with online viewing applications.

point-and-shoot: A type of digital camera that has automatic settings for most features (such as focus and exposure).

polarizer: Camera filter that reduces the glare bouncing off shiny surfaces in your photos. Can also help deepen the contrast of the sky from certain angles.

portrait mode: The orientation of an image in which the longest dimension is vertical, also called tall orientation.

ppi: Stands for pixels per inch. Used to state image print resolution. Measured in terms of the number of pixels per linear inch. A higher ppi usually translates to better-looking printed images.

print resolution: The number of pixels per linear inch (ppi) in a printed photo; the user sets this value inside a photo-editing program.

proprietary format: Also called native format. The format used by only that particular type of camera.

prosumer: A digital camera model that includes many features on professional cameras but also offers automatic settings.

PSD: Short for personal storage device. A standalone battery-operated burner or hard drive.