Canon EOS 5D Mark III vs Canon EOS 1000D vs Canon EOS 500D vs Canon EOS 50D

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Basic Info
Price range
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Release date	Mar 2, 2012	Jun 10, 2008	Mar 25, 2009	Aug 26, 2008

Characteristics
Body type	Mid-size SLR	Compact SLR	Compact SLR	Mid-size SLR
Max resolution	5760 x 3840	3888 x 2592	4752 x 3168	4752 x 3168
Pixels	22 MP	10 MP	15 MP	15 MP
Sensor detectors	23	11	16	16
Sensor type	CMOS	CMOS	CMOS	CMOS
Processor	Digic 5+		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	Auto, 100, 200, 400, 800, 1600, 3200 (6400-12800 with boost)	Auto, 100, 200, 400, 800, 1600, 3200 (H),6400(H1),12800(H2)
Image stabilization
Digital zoom
Manual focus
Lens mount	Canon EF	Canon EF/EF-S	Canon EF/EF-S	Canon EF/EF-S
Screen type	Fixed		Fixed	Fixed
Screen size	1,040,000	230	920	920
Screen dots
Min. shutter speed	Yes	1/4000	1/4000	1/8000
Aperture priority
Shutter priority
Other features
Built-in flash		13.00	13.00	13.00
Flash range
Continuous drive	Multi
Self-timer	Center-weighted		Multi	Multi
Video	H.264		1920 x 1080 (20 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps)
Microphone
Storage	None	SD/SDHC/MMC card	SD/SDHC	Compact Flash (Type I or II), UDMA
Connectivity
USB	Yes	No	Yes	Yes
HDMI
Wireless	Yes
Weight		126 x 98 x 65	129 x 98 x 62	146 x 108 x 74
Orientation sensor	Optional
GPS
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The comparion is limited to 4 cameras at a time.