	Canon EOS 400D Digital Rebel XTi	Nikon D80	Sony Alpha DSLR A-100
Price (street)	US$799	US$999	US$884
Availability	September 2006	September 2006	Available now
Max resolution	3888 x 2592	3872 x 2592	3872 x 2592
Low resolution	2816 x 1880, 1936 x 1286	2896 x 1944, 1936 x 1296	3896 x 1936, 1920 x 1280
Effective pixels	10.1 million	10.2 million	10.2 million
Sensor photo detectors	10.5 million	10.75 million	10.8 million
Sensor type	CMOS (Canon)	CCD (Sony)	CCD (Sony)
Sensor size	22.2 x 14.8 mm	23.6 x 15.8 mm	23.6 x 15.8 mm
Focal length multiplier	1.6x	1.5x	1.5x
ISO settings	100, 200, 400, 800, 1600	Auto, 100 - 1600 (up to 3200 with boost)	Auto, 100, 200, 400, 800, 1600
Image stabilization	In lens only (IS lenses)	In lens only (VR lenses)	In body only
Auto focus type	Multi-BASIS TTL, 9 focus zones	Nikon Multi-CAM1000, 11 focus zones	TTL CCD line sensors 9 zones
White balance options	7 plus manual	6 plus manual	7 plus manual
Shutter speeds	30 sec + Bulb to 1/4000 sec	30 sec + Bulb to 1/4000 sec	30 sec + Bulb to 1/4000 sec
Built-in Flash	Yes	Yes	Yes
Flash sync	1/200s	1/200s	1/160 sec [ 1/125 sec with Super Steadshot on]
Flash guide #	13 m (ISO 100)	13 m (ISO 100)	12 m (ISO 100)
External flash	Yes, hot-shoe, E-TTL II	Yes, hot-shoe	Yes, hot-shoe (Minolta)
Flash modes	Auto, On, Red-eye reduction, Off	Front curtain, Rear curtain, Red-Eye, Slow, Red-Eye Slow	Auto, Fill-in, Red-Eye reduction, Slow Sync, Off
Exposure comp.	-2 EV to +2 EV in 1/3 EV or 1/2 EV steps	-5 EV to +5 EV in 1/2 or 1/3 EV steps	-2 EV to +2 EV in 1/3 EV steps
Metering	35 area eval, center weighted, partial	3D Matrix metering II, Center weighted, Spot	40 segment, Center weighted average, Spot
Lens mount	Canon EOS EF, EF-S mount	Nikkor AF / F-mount, D-Type	Sony Alpha mount, Minolta A-type mount
Continuous Drive	Yes, 3 fps, 27 JPEG or 10 RAW frames	Yes, 3 fps, up to 23 JPEG, 6 NEF images	Yes, 3 fps
Remote control	E3 connector, InfraRed	Optional (ML-L3 or MC-DC1)	Wire (Optional)
Self-timer	10 sec (2 sec with mirror lock-up)	2, 5, 10 or 20 sec	2 or 10 sec
Orientation sensor	Yes	Yes	Yes
Memory card	Compact Flash (Type I or II)	SD/SDHC card	Compact Flash (Type I or II)
Storage formats	JPEG (EXIF 2.21) + RAW	JPEG (EXIF 2.2) + RAW	JPEG (EXIF 2.2) + RAW
Quality Levels	Fine, Normal	Fine, Normal, Basic	Fine, Standard
Viewfinder	Pentamirror, 0.8x, 95% coverage	Pentaprism, 0.94x, 95% coverage	Pentaprism, 0.93x, 95% coverage
LCD	2.5"	2.5"	2.5"
LCD Pixels	230,000	230,000	230,000
Video out	Yes	Yes	Yes
USB	Yes, 2.0	Yes, 2.0	Yes, 2.0
Firewire (IEEE 1394)	No	No	No
Battery	NB-L2H Li-Ion	EN-EL3e Li-Ion	NP-FM55H Li-Ion
Weight (w/battery)	553 g (20 oz)	668 g (23.6 oz)	638 g (22.5 oz)
Size	126.5 x 94.2 x 65 mm (5 x 3.7 x 2.6 in)	132 x 103 x 77 mm (5.2 x 4.1 x 3 in)	133 x 95 x 71 mm (5.2 x 3.7 x 2.8 i

Bob Atkins Photography

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