<P> Many different models of Polaroid and non-Polaroid instant cameras were introduced in the mid to late 20th century . They can be categorized by the film type . The first roll film model was the model 95, followed by subsequent models containing various new features . The first 100 series pack film model was the model 100, followed by various models in the 100 - 400 series and a few ad hoc cameras such as the countdown series . Models which used SX - 70 film were introduced in a folding version, with later versions being unfolding and plastic bodied. 600 series cameras were all plastic bodied but most came with an electronic flash . This was followed by other various plastic cameras based on spectra, captiva, and izone film . </P> <P> Polaroid also invented and manufactured an instant movie camera system was called Polavision . The kit included a camera, film, and a movie viewer . When the movie was shot, it would be taken out of the camera and then inserted into the viewer for development, then viewed after development . This format was close to Super 8 mm film . Polavision film was different from normal film in that it was an additive film, mixing the primary colors (red, green, blue) to form the color image . The biggest disadvantage of the Polavision system was the low film speed (ASA 40), which resulted in having to use very bright lights when taking the movie, as well as requiring a special player to view the developed movie . It also lacked audio capability . Because of this, and combined with the advent of VHS video recorders, Polavision had a short history . </P> <P> The earliest instant cameras were conceived before Edwin Land's invention of the instant camera . These cameras were, however, more portable wet darkrooms than "instant" camera and were difficult to use . </P> <P> After Land's instant camera invention was brought to market in 1948, a few different instant cameras were developed, some using Polaroid - compatible film such as cameras by Keystone, Konica, and Minolta . Others were incompatible with Polaroid cameras and film, the most notable of these being made by Kodak, such as the EK series and Kodamatic cameras . </P>

When does the new polaroid camera come out