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Magic Lantern is a firmware add-on for various Canon digital single-lens reflex (DSLR) cameras and the EOS M. [2] It adds features for DSLR filmmaking and still photography, and is free and open-source. Magic Lantern was originally written for the Canon EOS 5D Mark II [3] by Trammell Hudson in 2009 after he reverse engineered its firmware. [1]
The free software Canon Hack Development Kit (CHDK) project, started by Andrey Gratchev, has successfully enhanced many Canon PowerShot cameras without replacing the stock firmware. [29] [30] It allows programmatic control of many Canon compact cameras, enabling users to add features, including games and scripts written in UBASIC or Lua.
The following cameras allow audio and video to be shot in at least one raw (in the sense of a series of raw image format frames, such as in CineDNG) format. Lossy compression may be present. However, "raw" means the image data should not have gone through demosaicing and further processing, or at least the process should be reversible.
The PowerShot's success comes from its marketing to the general public as a compact and easy to use digital camera. [3] Free software from the Canon Hack Development Kit (CHDK) project allows nearly complete programmatic control of PowerShot cameras, enabling users to add features, up to and including BASIC and Lua scripting. [4]
The Canon Hack Development Kit (CHDK), an open source firmware for Canon cameras, uses Lua as one of two scripting languages. Celestia, the astronomy educational program, uses Lua as its scripting language. Cheat Engine, a memory editor/debugger, enables Lua scripts to be embedded in its "cheat table" files, and even includes a GUI designer.
DRYOS (also stylized as DryOS) is a proprietary real-time operating system made by Canon and is used in their digital cameras and camcorders. [1]Since late 2007, DIGIC-based cameras are shipped using DRYOS.
An in-camera approximation of the raw histogram is provided by a few cameras, such as Leica M8 and M9, and by Magic Lantern, the unofficial firmware "hack" for Canon DSLR cameras (which also includes an automatic ETTR option).
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