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2. Digital cinema - Wikipedia

   en.wikipedia.org/wiki/Digital_cinema

   In digital cinema, resolutions are represented by the horizontal pixel count, usually 2K (2048×1080 or 2.2 megapixels) or 4K (4096×2160 or 8.8 megapixels). The 2K and 4K resolutions used in digital cinema projection are often referred to as DCI 2K and DCI 4K. DCI stands for Digital Cinema Initiatives.

3. 4K resolution - Wikipedia

   en.wikipedia.org/wiki/4K_resolution

   Though the price of the viewing devices began to drop rapidly from 2013, the home cinema digital video projector market saw little expansion as very few manufacturers had full 4K-capable lineups. Native 4K projectors were quoted in five figures well into 2015 before finally dropping below US$10,000, with Sony being the only major maker ...

4. Movie projector - Wikipedia

   en.wikipedia.org/wiki/Movie_projector

   By 2006, the advent of much higher 4K resolution digital projection reduced pixel visibility. The systems became more compact over time. By 2009, movie theaters started replacing film projectors with digital projectors. In 2013, it was estimated that 92% of movie theaters in the United States had converted to digital, with 8% still playing film.

5. Amazon’s Portable Projector With 25,000 Reviews Is Marked ...

   www.aol.com/amazon-portable-projector-25-000...

   AuKing Mini HD Projector. Price: $99.99 $55.99 Buy On Amazon . The AuKing portable projector delivers your content in full HD resolution with 9500 lumens of brightness for clear, detailed images ...

6. Dolby 3D - Wikipedia

   en.wikipedia.org/wiki/Dolby_3D

   Dolby 3D uses a Dolby Digital Cinema projector that can show both 2D and 3D films. For 3D presentations, additional filters are used in the projector, one filter each for the left eye and right eye. Each filter allows different frequencies of red, green, and blue light to pass through each of them.

7. IMAX - Wikipedia

   en.wikipedia.org/wiki/IMAX

   IMAX is a proprietary system of high-resolution cameras, film formats, film projectors, and theaters known for having very large screens with a tall aspect ratio (approximately either 1.43:1 or 1.90:1) and steep stadium seating, with the 1.43:1 ratio format being available only in few selected locations.