The type of camera with self-developing film is known as instant camera. Polaroid Corporation makes the famous Polaroid cameras.
Based on the type of film used, Polaroid cameras can be classified. The older Polaroids used instant film roll. Roll films were of two types: Positive or developing agent and negative. These rolls were available in three sizes. Pack film was later used in cameras, in which the photographer has to pull the film from the camera for developing and subsequently the positive and the negative have to be peeled separately while developing. This Pack film was available initially in a rectangular format and later in square format. Subsequent Polaroids such as the once famous SX-70 model utilized a square format integral film, which had the developer, negative, fixer etc in the same film. Development of each exposure was automatic once the shot is taken.

That's the history of Polaroid camera. Polaroid digital cameras are now available in various types. You should be happy to know that there are certain models designed specially for a good cause. The m635P model from Polaroid Corporation was designed solely for promotion of breast cancer research. Polaroid Corporation along with actress Elizabeth Hurley initiated to offer a combined donation of $60,000 for the above Research foundation in the year 2006. Pink, light pink and magenta models of Polaroid digital cameras were launched especially for the above good cause and awareness.
One more noted achievement from Polaroid is the launch of the ION digital camera which combines high-end features and is easy to use. This ION digital camera has an on-board memory of 8MB and is light and compact, suitable for traveling people. Other features of this ION digital camera include automatic white balance with auto exposure, a 10-second electronic timer, the capacity to capture AVI video clips along with audio like a web cam, 640 x 460 pixel resolution, Arc Soft software on DVD, two AAA batteries and a USB cable.
Another great model from Polaroid is PDC 4355, which has glass lenses of high quality for Zoom and normal, 4.2 MP resolutions, 3x Optical Zoom and a fast CCD sensor. This is a good camera for photographers for point and shoot simplicity coupled with great optical performance. In the 3x optical and 4x digital zoom modes, the glass lens system permits for exposures for distances of 15 centimeters to infinity and has three modes for image quality and video clip functions.

This Polaroid digital camera has other features such as macro mode, auto focus, Inbuilt flash having the on, off and red eye and auto modes. The PDC 4355 model has an Inbuilt flash memory of 16 MB to store your video clips and pictures, later expandable up to 256MB with any available Secure Digital card. This camera also supports Print Image Matching feature that has the ability to have the camera and mode settings along with the images recorded.
You can easily upload the images to your computer through an USB cable by using the software 'Photo Impression 5.0'. This software can launch your desktop automatically, detect any new photos in the camera and permit you to transfer them to your computer at the click of the OK button. This handy camera allows you to take pictures within a few minutes of receiving and is powered by two AA batteries.