Canon EOS 5D Mark III vs Canon EOS 1100D vs Canon EOS 550D vs Canon EOS 5D

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Basic Info
Price range
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Release date	Mar 2, 2012	Feb 7, 2011	Feb 8, 2010	Aug 22, 2005

Characteristics
Body type	Mid-size SLR	Compact SLR	Compact SLR	Mid-size SLR
Max resolution	5760 x 3840	4272 x 2848	5184 x 3456	4368 x 2912
Pixels	22 MP	12 MP	18 MP	13 MP
Sensor detectors	23	13	19	13
Sensor type	CMOS	CMOS	CMOS	CMOS
Processor	Digic 5+	Digic 4	Digic 4	Digic II
Image & lens
ISO	Auto, 100 - 25600 in 1/3 stops, plus 50, 51200, 102400 as option	Auto, 100, 200, 400, 800, 1600, 3200, 6400	Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800 (with boost)	100 - 1600 in 1/3 stops, plus 50, 3200 as option
Image stabilization
Digital zoom
Manual focus
Lens mount	Canon EF	Canon EF/EF-S	Canon EF/EF-S	Canon EF
Screen type	Fixed	Fixed	Fixed	Fixed
Screen size	1,040,000	230	1,040,000	230
Screen dots
Min. shutter speed	Yes	1/4000	1/4000	Yes
Aperture priority
Shutter priority
Other features
Built-in flash		9.20	13.00
Flash range				External
Continuous drive	Multi			Multi
Self-timer	Center-weighted	Multi	Multi	Center-weighted
Video	H.264	1280 x 720 (29.97, 25 fps)	1920 x 1080 (30, 25, 24 fps), 1280 x 720 (60, 50 fps), 640 x 480 (60, 50 fps)
Microphone
Storage	None	SD/SDHC/SDXC card	SD/SDHC/SDXC	None
Connectivity
USB	Yes	Yes	Yes
HDMI
Wireless	Yes			Yes
Weight		130 x 100 x 78	129 x 98 x 62
Orientation sensor	Optional			None
GPS
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The comparion is limited to 4 cameras at a time.