• APS-C 328.6mm2
  • 10.1 megapixels
  • ISO 100 - 1600
  • 35mm 861.6mm2
  • 24.6 megapixels
  • ISO 200 - 3200
  • Detailed specifications
  • Canon EOS 400D Rebel XTi
  • Sony Alpha DSLR-A850
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Canon XT
XT vs XTi
 
Successor: Canon XSi
XTi vs XSi
 
General
Model Number: XTi A850
Alternate Model Number(s): EOS-400D Digital, EOS Kiss Digital X  
Camera Format: SLR Pro SLR
Currently Manufactured: No No
Retail Price: $799.00 $1999.95
Street Price: $521.63 $2,219.00
Date Available: 2006-09-15 2009-10-08
Tripod Mount: Yes Yes
Weight: 18.0 oz (510 g) 30.0 oz (850 g)
Size: 5.0 x 3.7 x 2.6 in.
(127 x 94 x 65 mm)
6.2 x 4.6 x 3.2 in.
(156 x 117 x 82 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Canon Sony
Effective Megapixels: 10.1 24.6
Sensor Format: APS-C 35mm
Sensor size: 328.56mm2 (22.20mm x 14.80mm) 861.6mm2 (35.90mm x 24.00mm)
Approximate Pixel Pitch: 5.71 microns 5.94 microns
Focal Length Multiplier: 1.6x 1.0x
Aspect Ratio: 3:2 3:2, 16:9
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Fixed
Self-Cleaning: Yes Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: No No
DxO Sensor Score: 62 79
DxO Color Depth Score (bits): 22.1 23.8
DxO Dynamic Range Score (evs): 11.0 12.2
DxO Maximum Effective ISO Score (iso): 664 1,415
Image Capture
Image Resolution: 3888 x 2592 (10.1 MP, 3:2),
2816 x 1880 (5.3 MP, 3:2),
1936 x 1288 (2.5 MP, 3:2)
6048 x 4032 (24.4 MP, 3:2),
6048 x 3408 (20.6 MP, Other),
4400 x 2936 (12.9 MP, 3:2),
4400 x 2472 (10.9 MP, 16:9),
3984 x 2656 (10.6 MP, 3:2),
3024 x 2016 (6.1 MP, 3:2),
2896 x 1928 (5.6 MP, 3:2),
3024 x 1704 (5.2 MP, Other),
1984 x 1320 (2.6 MP, 3:2)
Image File Format: JPEG (EXIF 2.21), CR2 RAW JPEG (EXIF 2.21), RAW, cRAW, RAW+JPEG; (ARW 2.0)
Continuous-mode frames/second: 3.0 3.0
Video Capture
Can take movies: No No
Movie Resolution:
Movie File Format: None  
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No No
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Canon EF/EF-S Sony Alpha (Minolta A)
Lens: Canon EF-S 18-55mm f/3.5-5.6 USM n/a
Focal Length (35mm equivalent): 29 - 88mm  
Focal Length (actual): 18 - 55mm  
Zoom Ratio: 3.00x  
Aperture Range: f/3.5 - 22 / f/ 5.6 - 38  
Integrated ND Filter: No No
Normal Focus Range: 28 cm to Infinity
11.0 in to Infinity
 
Macro Focus Range:    
Filter Thread: 58.0mm n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No No
Digital Zoom Values: n/a n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 9-point phase detection CT-SIR CMOS Sensor, 1 cross-type, 8 single-axis 9-point TTL phase detection with 10 assist points, center dual-cross at f/2.8.
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD (playback only) Optical / LCD (playback only)
Viewfinder Type: SLR type, eye-level pentamirror, 95%, 0.8x, 21mm relief, -3.0 to +1.0 diopter SLR type; eye-level pentaprism with 98% coverage, 0.74x mag., 20mm eyepoint, -3 to +1 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):   0.74x
Viewfinder Magnification (nominal/claimed):   0.74x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.5 3.0
Rear Display Resolution: 230,000 dots 921,600 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 10.0x 19.0x
Top Deck Display: No Yes
Exposure
Maximum ISO (native): 1600 3200
Minimum ISO (native): 100 200
ISO Settings: Auto, 100, 200, 400, 800, 1600 Auto, 200-3200, Extensions to 100 and 6400
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Custom Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Color Temperature from 2,500K to 9,900K, Custom (3)
Shutter Speed Range: 1/4000 - 30 sec 1/8000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: 35-zone SPC: evaluative, 9% spot, center-weighted 40-segment Honeycomb Pattern, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Portrait, Landscape, Close-up, Sports, Night portrait  
Self Timer: 10 seconds 2 or 10 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: E-TLL II auto-popup with red-eye reduction n/a
Flash Guide Number (ISO 100): 13.0 m / 42.7 ft. n/a
Flash Range Description: n/a n/a
Max Flash Sync: 1/200 1/250
Flash Exposure Compensation:   +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Hot shoe, PC-sync
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: CF1 / CF2 / Microdrive CF1 / CF2 / MS Duo / MS PRO Duo / Microdrive
UHS Support:    
Other Memory:    
Dual Card Slots: No Yes
RAW Capture Support: Yes Yes
Uncompressed Format: CR2 RAW RAW, cRAW, RAW+JPEG; (ARW 2.0)
Movie File Format: None  
Included Memory: No memory included  
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: RS-60E3 wired, RC-1 / RC-5 IR Optional wired or wireless
Connections (extended): DC input DC input, Multi-connector, Sync termimal, Remote terminal, HDMI Type-C minijack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.35 0.40
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.36 0.50
Buffer size for RAW shooting in single shot mode (frames): 9 23
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No Yes
JPEG shooting speed in burst mode (fps, max resolution): 3.0 3.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 8 23
RAW shooting speed in burst mode (fps):    
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid): 0.20 seconds 0.18 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.130 seconds 0.154 seconds
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused): 0.105 seconds 0.074 seconds
Shutter Lag (notes):    
Startup Time: 0.4 seconds 0.5 seconds
Play -> Record Time: 0.2 seconds 0.3 seconds
Flash cycle time, full power: 3.0 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 370 shots 880 shots
Battery Life, Video:    
Battery Form Factor: Proprietary NB-2LH Proprietary
Usable Battery Types: Lithium Ion rechargeable NP-FM500H Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NB-2LH Lithium Ion rechargeable 1 x Proprietary NP-FM500H Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Photoshop Elements, ZoomBrowser EX (PhotoRecord) / ImageBrowser, PhotoStitch, RemoteCapture, File Viewer Utility, TWAIN / WIA drivers Image Data Converter SR, Image Data Lightbox SR, Remote Camera Control (all Windows & Macintosh), Picture Motion Browser (Windows only).
OS Compatibility: Windows, Mac OS Windows 2000Pro/XP/Vista; Mac OS X (v 10.1.3+)
Miscellaneous
Notes & Features: LCD is new model with wide 160 degree viewing angle, much brighter backlight. Kit lens bundled for $100 above body-only price is the newer 18-55mm II mode, but NOT the USM version of that lens. Cost reduced Sony A900. Smaller viewfinder (98% vs 100%), slower burst mode (3 fps vs 5), wireless remote not included.