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It can be used as a wireless optically controlled slave with flashes, flash controllers, or cameras which support Canon's infrared control system, including the 580 Speedlite series, the ST-E2 flash controller, and cameras such as the 7D Mark II. It supports TTL, E-TTL and E-TTL II.
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] He ported it to the Canon EOS 550D in July 2010. There are now versions for many other Canon DSLRs and the current principal developer is known as A1ex.
Can be used as wireless (optical) controller for other Canon flashes Yes Canon Speedlite 600EX-RT [6] 60m/ 196.9 ft at 200mm zoom-head position Yes 20-200mm (14mm diffusor) 1/1-1/128 (1/3 steps) E-TTL II yes yes (360) 3.3 sec Yes (only when using Canon master) Can be used as wireless (optical) controller for other Canon flashes Yes
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One technique to make this easier to control is called back button focus: separating focus from the shutter control button by reassigning the AF-on function to a button on the back of the camera body. [8] Some models of a camera may have a dedicated AF-ON button, and menu options to disable the focus via shutter button half-press.
Usually, flash memory controllers also include the "flash translation layer" (FTL), a layer below the file system that maps host side or file system logical block addresses (LBAs) to the physical address of the flash memory (logical-to-physical mapping). The LBAs refer to sector numbers and to a mapping unit of 512 bytes.
The T90, became the first mass-market camera to support second-curtain flash, where the flash fires at the end of the exposure, just before the second shutter curtain starts to close. Although not identical, the current (2009) Canon Speedlite 580 EX II supports the T90 as well. Canon also produced a dedicated macro ring flash for the camera ...