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| Index | 5D Mark lll | 6D | 7D | 
| Image Processor | DIGIC 5+ | DIGIC 5+ | Dual DIGIC 4 | 
| Megapixels | 22.3 | 20.2 | 18 | 
| LCD Size | 3.2-inch | 3.0-inch | 3.0-inch | 
| Crop Factor / Image Sensor (CMOS) | 1.0x (Full-frame) | 1.0x (Full-frame) | 1.6x (APS-C) | 
| ISO Range | ISO 100–25600 (ISO 102400 via Menu Selection) | ISO 100-25600 (ISO 51200 via Menu Selection) | ISO 100-6400 (ISO 12800 via Custom Function) | 
| Shutter Speeds | 30-1/8000 sec. & Bulb; manually settable in 1/3-, 1/2-, 1-stop increments | 30-1/4000 sec. & Bulb | 30-1/8000 sec. & Bulb; manually settable in 1/3-, 1/2-, 1-stop increments | 
| Number of Focusing Points | 61 61 (Area AF Ellipse); 61 point selectable, 41 cross-type points (lens dependent), 5 diagonal cross-type points, improved Al Servo AF III | 11 (11, Center AF point is cross-type at f/5.6; vertical line-sensitive at f/2.8. Upper and lower AF points are vertical line-sensitive AF at f/ | 19 19, Each AF Point has a cross-type sensor, Center AF point is dual-diagonal high-precision cross-type sensor with f/2.8 | 
| Viewfinder coverage | Approx. 100% horizontal/ vertical at 0.71x | Approx. 97% horizontal/vertical at 0.71x | Approx. 100% horizontal/ vertical at 1x | 
| FPS | 3.0 and 6.0 fps | 3.0 and 4.5 fps | 3.0 and 8.0 fps | 
| Built-in Flash | No | No | Yes | 
| AF During Video | No | No | No | 
| Video Recording | Full HD 1920 x 1080 | Full HD 1920 x 1080 | Full HD 1920 x 1080 | 
| Recording Media | 1 UDMA CD/CF Cards (Type I) and 1SD/SDHC/SDXC Memory Cards | SD/SDHC/SDXC Memory Card and compatible with UHS-I SD Memory Card | UDMA CF/CF Cards (Type I or II) | 
| Battery Life (Camera Body Only) | Viewfinder Shooting At 73°F/23°C: 950, Live View Shooting At 73°F/23°C: 200 | Viewfinder Shooting At 73°F/23°C: 1090, Live View Shooting At 73°F/23°C: 220 | Viewfinder Shooting At 73°F/23°C: 1000 Live View Shooting At 73°F/23°C: 230 | 
| Dimensions (W x H x D) | Approx. 6.0 x 4.6 x 3.0 in. | Approx. 5.7 x 4.4 x 2.8 in. | Approx. 5.8 x 4.4 x 2.9 in. | 
| Compatible Lenses | EF Lenses | EF Lenses | EF and EF-S Lenses |