Canon EOS 50D vs Canon EOS 550D vs Canon EOS 5D Mark II vs Canon EOS 600D

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Basic Info
Price range
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Release date	Aug 26, 2008	Feb 8, 2010	Sep 17, 2008	Feb 7, 2011

Characteristics
Body type	Mid-size SLR	Compact SLR	Mid-size SLR	Compact SLR
Max resolution	4752 x 3168	5184 x 3456	5616 x 3744	5184 x 3456
Pixels	15 MP	18 MP	21 MP	18 MP
Sensor detectors	16	19	22	19
Sensor type	CMOS	CMOS	CMOS	CMOS
Processor	Digic 4	Digic 4	Digic 4	Digic 4
Image & lens
ISO	Auto, 100, 200, 400, 800, 1600, 3200 (H),6400(H1),12800(H2)	Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800 (with boost)	Auto, 100 - 6400 in 1/3 stops, plus 50, 12800, 25600 as option	Auto, 100, 200, 400, 800, 1600, 3200, 6400, (12800 with boost)
Image stabilization
Digital zoom
Manual focus
Lens mount	Canon EF/EF-S	Canon EF/EF-S	Canon EF	Canon EF/EF-S
Screen type	Fixed	Fixed	Fixed	Fully articulated
Screen size	920	1,040,000	920	1,040,000
Screen dots
Min. shutter speed	1/8000	1/4000	Yes	1/4000
Aperture priority
Shutter priority
Other features
Built-in flash	13.00	13.00		13.00
Flash range
Continuous drive			Multi
Self-timer	Multi	Multi	Center-weighted	Multi
Video		1920 x 1080 (30, 25, 24 fps), 1280 x 720 (60, 50 fps), 640 x 480 (60, 50 fps)	H.264	1920 x 1080 (30, 25, 24 fps), 1280 x 720 (60, 50 fps), 640 x 480 (60, 50 fps)
Microphone				Mono
Storage	Compact Flash (Type I or II), UDMA	SD/SDHC/SDXC	None	SD/SDHC/SDXC
Connectivity
USB	Yes	Yes	Yes	Yes
HDMI
Wireless			Yes
Weight	146 x 108 x 74	129 x 98 x 62		133 x 100 x 80
Orientation sensor			None
GPS
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The comparion is limited to 4 cameras at a time.