Canon EOS 5D Mark III vs Canon ELPH 100 HS vs Canon EOS 50D vs Canon EOS 550D

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Basic Info
Price range
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Release date	Mar 2, 2012	Feb 7, 2011	Aug 26, 2008	Feb 8, 2010

Characteristics
Body type	Mid-size SLR	Ultracompact	Mid-size SLR	Compact SLR
Max resolution	5760 x 3840	4000 x 3000	4752 x 3168	5184 x 3456
Pixels	22 MP	12 MP	15 MP	18 MP
Sensor detectors	23		16	19
Sensor type	CMOS	BSI-CMOS	CMOS	CMOS
Processor	Digic 5+	DIGIC 4 with iSAPS technology	Digic 4	Digic 4
Image & lens
ISO	Auto, 100 - 25600 in 1/3 stops, plus 50, 51200, 102400 as option	Auto 100, 200, 400, 800, 1600, 3200	Auto, 100, 200, 400, 800, 1600, 3200 (H),6400(H1),12800(H2)	Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800 (with boost)
Image stabilization		Optical
Digital zoom
Manual focus		3
Lens mount	Canon EF		Canon EF/EF-S	Canon EF/EF-S
Screen type	Fixed	Fixed	Fixed	Fixed
Screen size	1,040,000	230	920	1,040,000
Screen dots
Min. shutter speed	Yes	1/2000	1/8000	1/4000
Aperture priority
Shutter priority
Other features
Built-in flash		3.50	13.00	13.00
Flash range
Continuous drive	Multi
Self-timer	Center-weighted	Multi	Multi	Multi
Video	H.264	1920 x 1080 (24 fps), 1280 x 720 (30 fps) 640 x 480 (30, 120 fps), 320 x 240 (30, 240 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/MMC/MMCplus/HC MMCplus	Compact Flash (Type I or II), UDMA	SD/SDHC/SDXC
Connectivity
USB	Yes	Yes	Yes	Yes
HDMI
Wireless	Yes
Weight		93 x 56 x 20	146 x 108 x 74	129 x 98 x 62
Orientation sensor	Optional
GPS
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The comparion is limited to 4 cameras at a time.