• APS-C 369.0mm2
  • 14.8 megapixels
  • ISO 100 - 6400
  • APS-C 332.3mm2
  • 24.1 megapixels
  • ISO 100 - 25,600
  • Detailed specifications
  • Sigma SD1 Merrill
  • Canon EOS Rebel T8i (EOS 850D)
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Canon T7i
T7i vs T8i
Successor:    
General
Model Number: SD1 Merrill T8i
Alternate Model Number(s): SD1 850D, Kiss X10i
Camera Format: Pro SLR SLR
Currently Manufactured: Yes Yes
Retail Price: $2299.00 $749.99
Street Price: $8,492.13 $749.00
Date Available: 2011-06-01 TBD
Tripod Mount: Yes Yes
Weight: 28.1 oz (796 g)
includes batteries
18.2 oz (515 g)
includes batteries
Size: 5.7 x 4.5 x 3.1 in.
(146 x 114 x 80 mm)
5.2 x 4.0 x 3.0 in.
(131 x 103 x 76 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Foveon X3 Canon
Effective Megapixels: 14.8 24.1
Sensor Format: APS-C APS-C
Sensor size: 368.95mm2 (23.50mm x 15.70mm) 332.27mm2 (22.30mm x 14.90mm)
Approximate Pixel Pitch: 5.00 microns 3.72 microns
Focal Length Multiplier: 1.5x 1.6x
Aspect Ratio: 3:2 3:2
Color Filter Type: Full Color RGBG
Anti Aliasing Filter: Not needed Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No Yes
DxO Sensor Score:    
DxO Color Depth Score (bits):    
DxO Dynamic Range Score (evs):    
DxO Maximum Effective ISO Score (iso):    
Image Capture
Image Resolution: 4704 x 3136 (14.8 MP, 3:2),
3264 x 2176 (7.1 MP, 3:2),
2336 x 1568 (3.7 MP, Other)
6000 x 4000 (24.0 MP, 3:2),
3984 x 2656 (10.6 MP, 3:2),
2976 x 1984 (5.9 MP, 3:2),
2400 x 1600 (3.8 MP, 3:2),
6000 x 3368 (20.2 MP, 16:9),
3984 x 2240 (8.9 MP, 16:9),
2976 x 1680 (5.0 MP, Other),
2400 x 1344 (3.2 MP, Other),
5328 x 4000 (21.3 MP, 4:3),
3552 x 2664 (9.5 MP, 4:3),
2656 x 1992 (5.3 MP, 4:3),
2112 x 1600 (3.4 MP, Other),
4000 x 4000 (16.0 MP, 1:1),
2656 x 2656 (7.1 MP, 1:1),
1984 x 1984 (3.9 MP, 1:1),
1600 x 1600 (2.6 MP, 1:1)
Image File Format: JPEG, RAW (.X3F), RAW + JPEG C-RAW, JPEG, .CR3 RAW (14-bit)
Continuous-mode frames/second: 4.1 n/a
Video Capture
Can take movies: No Yes
Movie Resolution: 3840x2160 (24p)
1920x1080 (60p/​50p/​30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p)
Movie File Format:   MPEG-4 AVC/H.264 video with AAC stereo audio in MP4 container
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: No Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Sigma SA bayonet Canon EF/EF-S
Lens: Sigma 17-50mm f/2.8 EX DC OS HSM Canon EF-S 18-55mm f/4-5.6 IS STM
Focal Length (35mm equivalent): 26 - 75mm 29 - 88mm
Focal Length (actual): 17 - 50mm 18 - 55mm
Zoom Ratio: 2.90x 3.06x
Aperture Range: f/2.8 - f/22 (W/T) f/4 - 22 (wide) / f/5.6 - 38 (tele)
Integrated ND Filter: No No
Normal Focus Range: 28 cm to Infinity
11.0 in to Infinity
25 cm to Infinity
9.8 in to Infinity
Macro Focus Range:    
Filter Thread: 77.0mm 58.0mm
Thread Type: n/a n/a
Optical Image Stabilization: Yes Yes
Digital Zoom: No
Digital Zoom Values: n/a  
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Phase-detection with 11-point Twin Cross AF Sensor; Single AF, Continuous AF (with AF motion prediction function), Manual OVF: AF-dedicated CMOS sensor, 45-points, up to 45 cross-type (f/5.6), 1 dual-cross (f/2.8 and f/5.6), 27 support f/8 (9 cross-type); Live View: Dual-Pixel CMOS AF
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD (playback only) Optical / LCD
Viewfinder Type: SLR type; Pentaprism, 98% coverage, 0.95x magnification, 18mm eyepoint, -3 to +1.5 diopter SLR type; fixed eye-level pentamirror, ~95% coverage, ~0.82x mag., 19mm eyepoint, -3 to +1 diopter
Focus Peaking: No Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.63x  
Viewfinder Magnification (nominal/claimed): 0.95x  
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 460,000 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
Top Deck Display: No No
Exposure
Maximum ISO (native): 6400 25600
Minimum ISO (native): 100 100
ISO Settings: 100, 200, 400, 800, 1600, 3200, 6400 Auto, 100 - 25600 in 1/3EV steps, Expandable to 51200
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Overcast, Incandescent, Fluorescent, Flash and Custom Auto, Daylight, Shade, Cloudy, Tungsten, White Fluorescent, Flash, Custom WB, Color Temperature K (Manually adjustable between 2000 - 10000K)
Shutter Speed Range: 1/8000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 77-segment Evaluative, Center-Weighted Average, Center Area, Spot Metering; EV 1 to 20 (50mm F1.4 : ISO100) 220,000-pixel RGB+IR metering sensor; 216-zone (18 x 12) metering optical viewfinder; Evaluative (linked to all AF points), Center-weighted, Partial (center, approx. 6.5% of viewfinder), Spot (center, approx. 2.0% of viewfinder)
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:   Scene Intelligent Auto, Flash Off, Creative Auto, Portrait, Landscape, Close-up, Sports, Special Scene (Group Photo, Kids, Food, Candlelight, Night Portrait, Handheld Night Scene, HDR Backlight Control), Creative Filters (Grainy B/W, Soft Focus, Fish-eye, Water Painting, Toy Camera, Miniature, HDR Art (Standard/Vivid/Bold/Embossed)
Self Timer: 2 or 10 seconds 10, 2, Remote, 10s Continuous (2-10) seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: S-TTL (17mm lens angle covered) E-TTL II Auto, Manual, Red-Eye Reduction
Flash Guide Number (ISO 100): 11.0 m / 36.1 ft. 12.0 m / 39.4 ft.
Flash Range Description: Lens aperture dependent. Guide Number is 12m/39.4 ft at ISO 100; Range is lens aperture dependent
Max Flash Sync: 1/180 1/200
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe, PC Sync socket Hot Shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: CF1 SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (.X3F), RAW + JPEG .CR3 RAW (14-bit)
Movie File Format:   MPEG-4 AVC/H.264 video with AAC stereo audio in MP4 container
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No Yes
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,Bluetooth,WiFi
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: Optional RS-31 IR Wireless, CR-21 Wired Optional wired, IR wireless, Bluetooth or Wi-Fi
Connections (extended): Wired Remote, DC Input jacks Mini (Type-C) HDMI, USB Micro-B (USB 2.0), External 3.5mm Stereo Mic Jack
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.78  
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.78  
Buffer size for RAW shooting in single shot mode (frames): 7  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? Yes
JPEG shooting speed in burst mode (fps, max resolution): 4.1  
Buffer size for JPEG shooting in burst mode (frames, max resolution): 7  
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): 0.38 seconds  
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.244 seconds  
Shutter lag (full AF, with flash): 0.52 seconds  
Shutter Lag (prefocused): 0.088 seconds  
Shutter Lag (notes): Full Autofocus Lag: Auto Area AF = 0.466s  
Startup Time: 4.5 seconds  
Play -> Record Time: 0.5 seconds  
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary BP-21 Proprietary LP-E17
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeble
Batteries Included: 1 x Proprietary BP-21 Lithium-ion rechargeable 1 x Proprietary LP-E17 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: Sigma Photo Pro 5.0  
OS Compatibility:    
Miscellaneous
Notes & Features: 46-megapixel 23.5 x 15.7mm APS-C full-color sensor, weather-resistant magnesium alloy body, dual "TRUE II" image processing engines, 11-point Twin Cross AF sensor, CompactFlash Type 1 with UDMA support.