• 1/2.3 inch 28.1mm2
  • 12.1 megapixels
  • 28.00mm - 112.00mm (35mm eq.)
  • APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 12,800
  • Detailed specifications
  • Canon PowerShot SD940 IS
  • 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: SD940 IS T4i
Alternate Model Number(s): Digital IXUS 120 IS EOS 650D, Kiss X6i
Camera Format: Ultra Compact SLR
Currently Manufactured: No No
Retail Price: $299.99 $1199.00
Street Price: $299.95 $699.98
Date Available: 2009-09-15 2012-06-30
Tripod Mount: Yes Yes
Weight: 4.9 oz (140 g)
includes batteries
36.6 oz (1,039 g)
includes batteries, kit lens
Size: 3.5 x 2.2 x 0.8 in.
(90 x 55 x 20 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: 12.1 18.0
Sensor Format: 1/2.3 inch APS-C
Sensor size: 28.0735mm2 (6.17mm x 4.55mm) 332.27mm2 (22.30mm x 14.90mm)
Approximate Pixel Pitch: 1.54 microns 4.30 microns
Focal Length Multiplier: n/a 1.6x
Aspect Ratio: 4:3, 16:9 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter:   Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No 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: 4000 x 3000 (12.0 MP, 4:3),
4000 x 2248 (9.0 MP, 16:9),
3264 x 2448 (8.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
1600 x 1200 (1.9 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 (EXIF 2.2) JPEG, .CR2 RAW (14-bit), RAW+L/F JPEG
Continuous-mode frames/second: 0.8 4.8
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (30)
640x480 (30)
320x240 (30)
1920x1080 (30/​25/​24)
1280x720 (60/​50)
640x480 (30/​25)
Movie File Format: MOV (Image: H.264, Audio: PCM) MPEG-4 AVC/H.264 video with stereo linear PCM audio in MOV container
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder:
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: n/a Canon EF/EF-S
Lens: Canon Zoom Lens Canon EF-S 18-135mm f/3.5-5.6 IS STM
Focal Length (35mm equivalent): 28 - 112mm 29 - 216mm
Focal Length (actual): 5 - 20mm 18 - 135mm
Zoom Ratio: 4.00x 7.50x
Aperture Range: f/2.8 (W) - f/5.9 (T) f/3.5 - 22 (wide) / f/5.6 - 38 (tele)
Integrated ND Filter: No No
Normal Focus Range: 30 cm to Infinity
11.8 in to Infinity
39 cm to Infinity
15.4 in to Infinity
Macro Focus Range: 3 - 50 cm
1.2 - 19.7 in
 
Filter Thread: n/a 67.0mm
Thread Type: n/a n/a
Optical Image Stabilization: Yes Yes
Digital Zoom: Yes No
Digital Zoom Values: Up to 4x n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detect AF with Face 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? Yes 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, 80, 100, 200, 400, 800, 1600, 3200* (*special scene mode) Auto(100-6400), 100-12800 in 1EV steps, expandable to H=25600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Cloudy, Tungsten, Fluorescent, Fluorescent H, Custom Auto, Daylight, Shade, Cloudy, Tungsten, White Fluorescent, Flash, Custom
Shutter Speed Range: 1/1500 - 15 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: Evaluative, Center-weighted average, Spot (center), Face Detect AE 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, Foliage, Snow, Beach, Sunset, Fireworks, Aquarium, Underwater, ISO 3200, Indoor, Kids & Pets, Night Snapshot, Color Accent, Color Swap, Digital Macro, Long Shutter, Stitch Assist 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: 2 or 10 seconds 10, 2, Remote, 10s Continuous (2-10) seconds
Time Lapse (intervalometer):   No
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Red-eye Reduction, Auto Red-eye Correction, Flash On, Flash Off; FE lock, Slow Synchro 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: Auto ISO: 1-13 ft./30cm-4.0m (W), 1.6-6.6 ft./50cm-2.0m (T) 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: SD / SDHC 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: MOV (Image: H.264, Audio: PCM) MPEG-4 AVC/H.264 video with stereo linear PCM audio in MOV container
Included Memory: No memory included No memory included
Included Memory Type:    
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: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes
Remote Control Type:   Optional Wired (RS-60E3) or Wireless (RC-6 , RC-5, RC-1)
Connections (extended): Mini-HDMI, DC input 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): 2.37 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 No
JPEG shooting speed in burst mode (fps, max resolution): 0.8 4.8
Buffer size for JPEG shooting in burst mode (frames, max resolution): Unlimited 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): 0.48 seconds 0.27 seconds
Shutter lag (full AF, tele): 0.55 seconds  
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): 0.077 seconds 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: 1.9 seconds 0.7 seconds
Play -> Record Time:   0.3 seconds
Flash cycle time, full power: 4.4 seconds 3.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 220 shots 180 shots
Battery Life, Still (CIPA Rating OVF/EVF):   440 shots
Battery Life, Video:    
Battery Form Factor: Proprietary NB-4L Proprietary LP-E8
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeble
Batteries Included: 1 x Proprietary NB-4L 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: Canon Software Suite CD-ROM EOS Digital Solutions Disc (ImageBrowser EX, Digital Photo Professional, PhotoStitch, EOS Utility (inc. Remote Capture), Picture Style Editor)
OS Compatibility: Windows, Mac OS 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: Optical Image Stabilization, Smart Auto, Face, Blink and Motion Detection, Intelligent Contrast Correction, HD Movies, HDMI Output. Available in Blue, Black, Silver and Brown. 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.