• 1/2.35 inch 27.3mm2
  • 8.0 megapixels
  • 36.00mm - 180.00mm (35mm eq.)
  • APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 12,800
  • Detailed specifications
  • Olympus Stylus 840
  • Canon EOS Rebel T4i (EOS 650D)
Links
Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Canon T3i
T3i vs T4i
Successor:   Canon T5i
T4i vs T5i
General
Model Number: 840 T4i
Alternate Model Number(s):   EOS 650D, Kiss X6i
Camera Format: Compact SLR
Currently Manufactured: No No
Retail Price: $249.99 $1199.00
Street Price: $173.11 $579.00
Date Available: 2008-01-31 2012-06-30
Tripod Mount: No Yes
Weight: 4.6 oz (130 g) 36.6 oz (1,039 g)
includes batteries, kit lens
Size: 3.8 x 2.2 x 0.9 in.
(96 x 57 x 24 mm)
5.2 x 3.9 x 3.1 in.
(133 x 100 x 79 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer:   Canon
Effective Megapixels: 8.0 18.0
Sensor Format: 1/2.35 inch APS-C
Sensor size: 27.2556mm2 (6.03mm x 4.52mm) 332.27mm2 (22.30mm x 14.90mm)
Approximate Pixel Pitch: 1.86 microns 4.30 microns
Focal Length Multiplier: n/a 1.6x
Aspect Ratio: 4:3, 16:9 3:2
Color Filter Type:   RGBG
Anti Aliasing Filter:   Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No Yes
DxO Sensor Score:   62
DxO Color Depth Score (bits):   21.7
DxO Dynamic Range Score (evs):   11.2
DxO Maximum Effective ISO Score (iso):   722
Image Capture
Image Resolution: 3248 x 2436 (7.9 MP, 4:3),
2560 x 1920 (4.9 MP, 4:3),
2304 x 1728 (4.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
1600 x 1200 (1.9 MP, 4:3),
1280 x 960 (1.2 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
5184 x 3456 (17.9 MP, 3:2),
4608 x 3456 (15.9 MP, 4:3),
5184 x 2912 (15.1 MP, 16:9),
3456 x 3456 (11.9 MP, 1:1),
3456 x 2304 (8.0 MP, 3:2),
3072 x 2304 (7.1 MP, 4:3),
3456 x 1944 (6.7 MP, 16:9),
2304 x 2304 (5.3 MP, 1:1),
2592 x 1728 (4.5 MP, 3:2),
2034 x 1728 (3.5 MP, Other),
2592 x 1456 (3.8 MP, 16:9),
1728 x 1728 (3.0 MP, 1:1),
1920 x 1280 (2.5 MP, 3:2),
1696 x 1280 (2.2 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
1280 x 1280 (1.6 MP, 1:1),
720 x 480 (0.3 MP, 3:2),
640 x 480 (0.3 MP, 4:3),
720 x 400 (0.3 MP, Other),
480 x 480 (0.2 MP, 1:1)
Image File Format: JPEG JPEG, .CR2 RAW (14-bit), RAW+L/F JPEG
Continuous-mode frames/second: 1.0 4.8
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30)
640x480 (15)
320x240 (30)
320x240 (15)
1920x1080 (30/​25/​24)
1280x720 (60/​50)
640x480 (30/​25)
Movie File Format: AVI Motion JPEG MPEG-4 AVC/H.264 video with stereo linear PCM audio in MOV container
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes
Video Usable as Viewfinder:
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a Canon EF/EF-S
Lens: Olympus lens Canon EF-S 18-135mm f/3.5-5.6 IS STM
Focal Length (35mm equivalent): 36 - 180mm 29 - 216mm
Focal Length (actual): 6.4 - 32mm 18 - 135mm
Zoom Ratio: 5.00x 7.50x
Aperture Range: f/3.3 (wide) / f/5.0 (tele) - ??? f/3.5 - 22 (wide) / f/5.6 - 38 (tele)
Integrated ND Filter: No No
Normal Focus Range: 70 cm to Infinity
27.6 in to Infinity
39 cm to Infinity
15.4 in to Infinity
Macro Focus Range: 3 - 70 cm
1.2 - 27.6 in
 
Filter Thread: n/a 67.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: Yes No
Digital Zoom Values: 5.6x n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: CCD contrast detection OVF: Phase-detect using 9 cross-type AF points with 1 high precision f/2.8 center point; Live View uses new hybrid phase-detect/contrast-detect AF on image sensor
Auto Focus Assist Light? No Yes
Manual Focus: No Yes
Viewfinder
Viewfinder: LCD Optical / LCD
Viewfinder Type:   SLR type; fixed eye-level pentamirror, 95% coverage, 0.85x mag., 19mm eyepoint, -3 to +1 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):   0.53x
Viewfinder Magnification (nominal/claimed):   0.85x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 1,040,000 dots (345,600 px)
Touchscreen: No Yes
Articulating Screen: No Yes
Tilt Swivel Screen: No Yes
Selfie Screen: No Yes
Max Playback Zoom: 10.0x 10.0x
Top Deck Display: No
Exposure
Maximum ISO (native):   12800
Minimum ISO (native):   100
ISO Settings: Auto, 64, 100, 200, 400, 800, 1600 Auto(100-6400), 100-12800 in 1EV steps, expandable to H=25600
Auto ISO Mode: No Yes
White Balance Settings: Auto, Daylight, Overcast, Tungsten, Fluorescent 1, Fluorescent 2, Fluorescent 3 Auto, Daylight, Shade, Cloudy, Tungsten, White Fluorescent, Flash, Custom
Shutter Speed Range: 1/2000 - 4 sec 1/4000 - 30 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: Digital ESP, Spot, Face detection AE w/ face-detection AF 63-zone Evaluative (linked to any AF point), Center-weighted, Partial (9%), Spot (4%)
Program Auto Exposure: Yes Yes
Aperture Priority: No Yes
Shutter Priority: No Yes
Full Manual Exposure: No Yes
Creative Exposure Modes: Portrait, Landscape, Landscape+Portrait, Night, Night+Portrait, Sport, Indoor, Candle, Self Portrait, Available Light Portrait, Sunset, Fireworks, Cuisine, Behind Glass, Documents, Auction, Shoot & Select 1 / 2, Beach&Snow, Pre-capture Movie Scene Intelligent Auto, Flash Off, Creative Auto, Portrait, Landscape, Close-up, Sports, Night Portrait, Handheld Night Scene, HDR Backlight Control, Multi-Shot Noise Reduction, Video Snapshot
Self Timer: 12 seconds seconds 10, 2, Remote, 10s Continuous (2-10) seconds
Time Lapse (intervalometer): No No
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Red-Eye Reduction, Fill-In, Off E-TTL II: Auto, Manual flash, Integrated Speedlite Transmitter; Red-Eye Reduction; Second Curtain Synchro
Flash Guide Number (ISO 100): n/a 13.0 m / 42.7 ft.
Flash Range Description: Wide: 0.66 - 14.4ft. (0.2 - 4.4m); Tele: 1.2 – 10.2ft. (0.6 - 3.1m) at ISO 800 Lens aperture dependent
Max Flash Sync:   1/200
Flash Exposure Compensation:   +/- 2.0 EV in 0.3EV steps
External Flash Connection: n/a Hot Shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: xD SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No Yes
Uncompressed Format:   .CR2 RAW (14-bit), RAW+L/F JPEG
Movie File Format: AVI Motion JPEG MPEG-4 AVC/H.264 video with stereo linear PCM audio in MOV container
Included Memory: 14.8 MB No memory included
Included Memory Type: built-in memory  
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: No Yes
Remote Control Type:   Optional Wired (RS-60E3) or Wireless (RC-6 , RC-5, RC-1)
Connections (extended):   Mini (Type-C) HDMI-CEC, External 3.5mm Stereo Mic Jack, Wired Remote Jack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.37
Cycle time for RAW shooting in single shot mode (seconds per frame):   0.34
Buffer size for RAW shooting in single shot mode (frames):   9
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.37
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 1.0 4.8
Buffer size for JPEG shooting in burst mode (frames, max resolution): 6 19
RAW shooting speed in burst mode (fps):   5.1
Buffer size for RAW shooting in burst mode (frames):   6
RAW+JPEG shooting speed in burst mode (fps):   5.6
Buffer Size for RAW+JPEG shooting in burst mode (frames):   3
Shutter lag (full AF, wide/mid):   0.27 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):   0.83 seconds
Shutter lag (prefocused, live view - DSLR):   0.062 seconds
Shutter Lag (manual focus):   0.094 seconds
Shutter lag (full AF, with flash):   0.28 seconds
Shutter Lag (prefocused):   0.074 seconds
Shutter Lag (notes):   OVF: Auto Selection AF lag: 0.122s Live View: Quick AF: 1.070s Hybrid AF Single Area: 0.833s Hybrid AF Auto Selection: 1.419s Prefocused: 0.062s
Startup Time:   0.7 seconds
Play -> Record Time:   0.3 seconds
Flash cycle time, full power:   3.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   180 shots
Battery Life, Still (CIPA Rating OVF/EVF):   440 shots
Battery Life, Video:    
Battery Form Factor: Proprietary LI-50B Proprietary LP-E8
Usable Battery Types: Lithium Ion rechargeable Lithium-ion rechargeble
Batteries Included: 1 x Proprietary LI-50B Lithium Ion rechargeable 1 x Proprietary LP-E8 Lithium-ion rechargeble
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: No
Software
Included Software:   EOS Digital Solutions Disc (ImageBrowser EX, Digital Photo Professional, PhotoStitch, EOS Utility (inc. Remote Capture), Picture Style Editor)
OS Compatibility:   Windows XP inc SP3 / Vista inc SP1 and SP2 (excl. Starter Edition) / 7 (excl. Starter Edition) OS X v10.6-10.7 (Intel processor required)
Miscellaneous
Notes & Features: DIGIC 5 processor, 3-inch Vari-angle capacitive touchscreen LCD, new Hybrid CMOS AF system allows continuous AF and touch focus in Live View/Movie mode, 5 fps burst mode, 100-12800 ISO expandable to 25600, Auto Lighting Optimizer, Highlight Tone Priority, vignetting correction, distortion correction, chromatic aberration correction, Handheld Night Scene, HDR Backlight Control, Multi-Shot Noise Reduction, Full HD video, built-in stereo mic, UHS-I compatible.