Canon EOS 5D Mark III vs Canon ELPH 310 HS vs Canon EOS 550D vs Canon EOS 5DS R

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Basic Info
Price range
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Release date	Mar 2, 2012	Aug 23, 2011	Feb 8, 2010	Feb 6, 2015

Characteristics
Body type	Mid-size SLR	Ultracompact	Compact SLR	Mid-size SLR
Max resolution	5760 x 3840	4000 x 3000	5184 x 3456	8688 x 5792
Pixels	22 MP	12 MP	18 MP	51 MP
Sensor detectors	23		19	53
Sensor type	CMOS	BSI-CMOS	CMOS	CMOS
Processor	Digic 5+		Digic 4	Dual DIGIC 6
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, 6400, 12800 (with boost)	Auto, 100-6400 (expandable to 50-12800)
Image stabilization		Optical
Digital zoom
Manual focus		1
Lens mount	Canon EF		Canon EF/EF-S	Canon EF
Screen type	Fixed	Fixed	Fixed	Fixed
Screen size	1,040,000	461	1,040,000	1,040,000
Screen dots
Min. shutter speed	Yes	1/2000	1/4000	Yes
Aperture priority
Shutter priority
Other features
Built-in flash		4.00	13.00
Flash range
Continuous drive	Multi			Multi
Self-timer	Center-weighted	Multi	Multi	Center-weighted
Video	H.264	1920 x 1080 (24fps), 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)	H.264
Microphone		None
Storage	None	SD/SDHC/SDXC	SD/SDHC/SDXC
Connectivity
USB	Yes	Yes	Yes	Yes
HDMI
Wireless	Yes			Yes
Weight		96 x 57 x 22	129 x 98 x 62
Orientation sensor	Optional			None
GPS
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The comparion is limited to 4 cameras at a time.