Canon ELPH 310 HS vs Canon EOS 1000D vs Canon EOS 50D vs Canon EOS 550D

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Basic Info
Price range
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Release date	Aug 23, 2011	Jun 10, 2008	Aug 26, 2008	Feb 8, 2010

Characteristics
Body type	Ultracompact	Compact SLR	Mid-size SLR	Compact SLR
Max resolution	4000 x 3000	3888 x 2592	4752 x 3168	5184 x 3456
Pixels	12 MP	10 MP	15 MP	18 MP
Sensor detectors		11	16	19
Sensor type	BSI-CMOS	CMOS	CMOS	CMOS
Processor			Digic 4	Digic 4
Image & lens
ISO	Auto 100, 200, 400, 800, 1600, 3200	Auto, 100, 200, 400, 800, 1600	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	1
Lens mount		Canon EF/EF-S	Canon EF/EF-S	Canon EF/EF-S
Screen type	Fixed		Fixed	Fixed
Screen size	461	230	920	1,040,000
Screen dots
Min. shutter speed	1/2000	1/4000	1/8000	1/4000
Aperture priority
Shutter priority
Other features
Built-in flash	4.00	13.00	13.00	13.00
Flash range
Continuous drive
Self-timer	Multi		Multi	Multi
Video	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)
Microphone	None
Storage	SD/SDHC/SDXC	SD/SDHC/MMC card	Compact Flash (Type I or II), UDMA	SD/SDHC/SDXC
Connectivity
USB	Yes	No	Yes	Yes
HDMI
Wireless
Weight	96 x 57 x 22	126 x 98 x 65	146 x 108 x 74	129 x 98 x 62
Orientation sensor
GPS
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The comparion is limited to 4 cameras at a time.