With not one but two high-performance DIGIC 4 image processors the EOS 1D Mark IV allows ultra-high ISO speed shooting for brilliant noise-free picture and movie quality even when it''s dark.16.1 megapixel APS-H size CMOS sensorFull HD recording in 24 25 and 30fpsISO 100-3200 expandable to 102400specifications:Body material : Magnesium alloy (exterior chassis and mirror box)=======================================Sensor- 27.9 x 18.6 mm CMOS sensor- 1.3x crop factor- RGB Color Filter Array- Built-in fixed low-pass filter (with self-cleaning unit)- 17 million total pixels- 16.1 million effective pixels- 3:2 aspect ratio=======================================Image processor : Dual DIGIC 4A/D conversion : 14 bitImage sizes (JPEG)- 4896x3264 (L)- 4320x2880 (M1)- 3552x2368 (M2)- 2448x1632 (S)=======================================Image sizes (RAW)- 4896x3264 (RAW)- 3672x2448 (M-RAW)- 2448x1632 (S-RAW)File formats- RAW (.CR2; 14-bit)- JPEG (EXIF 2.21) - Fine / Normal- RAW + JPEG (separate files)=======================================JPEG quality optionsEach JPEG size (L M1 M2 S) can be set to a quality level of 1 to 10 (1 high compression low quality - 10 low compression high quality)Movie Mode- MOV (Video: H.264 Sound: Linear PCM)- 1920 x 1080 (29.97 25 23.976 fps)- 1280 x 720 (59.94 50 fps)- 640 x 480 (59.94 50 fps)- Max duration: 29min 59sec- Max file size: 4GB=======================================Lenses- Canon EF lens mount (does not support EF-S lenses)- 1.3x field of view cropDust reduction- "EOS Integrated Cleaning System" with fluorine coating- Self-cleaning sensor unit (filter in front of sensor vibrates at high frequency at start-up and shutdown - can be disabled)- Dust Delete Data - Data from a test shot is used to ''map'' dust spots and can be later removed using Canon DPP Software=======================================Auto focus- 45-point TTL- 39 cross-type points require F2.8 or faster lens- TTL-AREA-SIR with a CMOS sensor- AF working range: -1.0 to 18 EV (at 23°C ISO 100)=======================================Focus modes- One shot AF- AI Servo AF- Manual focusAF point selection- Auto- Manual: Single point AF (45 19 11 or 9 points selectable)- Manual: Spot AF (with compatible lens)- Manual: AF point Expansion (Left rightsurround all 45)- AF points can be selected separately for vertical and horizontal shooting=======================================AF assist : External Speedlite onlyExposure modes- Program- Aperture-priority- Shutter-priority- Manual- Bulb=======================================Metering- 63 zone metering linked to all AF points- Metering range: 0 - 20 EV- Modes: Center Linked to AF point Multi-spot (up to 8 readings)Metering modes- Evaluative (63 zone linked to active AF point)- Partial (13.5% of viewfinder)- Spot metering (3.8% of viewfinder)=======================================AE lock- Auto: One Shot AF with evaluative metering- Manual: AE lock buttonExposure compensation- +/- 3.0 EV- 0.3 or 0.5 EV increments=======================================Sensitivity- ISO 100 - 12800- 0.3 or 1.0 EV increments- ISO 50 (Enhanced L)- ISO 25600 (Enhanced H1)- ISO 51200 (Enhanced H2)- ISO 102400 (Enhanced H3)=======================================Shutter- Focal-plane shutter- 30 - 1/8000 sec- 0.3 0.5 or 1.0 EV increments- Flash X-Sync: 1/300 sec (EX series Speedlites only)- Bulb=======================================Noise reduction- Long exposure (1 sec or longer)- Optional for High ISO (4 settings)White balance- Auto (using the imaging sensor)- Daylight- Shade- Cloudy- Tungsten- Fluorescent- Flash- Custom (up to 5 can be stored)- Kelvin (2500 - 10000 K in 100 K steps)=======================================WB bracketing- +/-3 levels- 3 images- Blue / Amber or Magenta / Green biasWB shift- Blue (-9) To Amber (+9)- Magenta (-9) to Green (+9)=======================================Picture style- Standard- Portrait- Landscape- Neutral- Faithful- Monochrome- User def. 1- User def. 2- User def. 3=======================================Color space- sRGB- Adobe RGBViewfinder- Eye-level pentaprism- 100% frame coverage- Magnification: 0.76x (-1 diopter with 50 mm lens at infinity)- Eyepoint: 20 mm- Dioptric adjustment: -3 to +1 diopter- Precision matte screen Ee-C IV (interchangeable)- Eye-piece shutter available via lever=======================================Mirror- Quick-return half mirror (transmission:reflection ratio 37:63)- Mirror lock-up (once or multiple exposures)Viewfinder info- AF points- Focus confirmation light- Metering mode- Spot metering area- Shutter speed- Aperture- Mmanual exposure- AE lock- ISO speed- Exposure level- Exposure warning- Fash ready- FP flash- FE lock- Flash exposure level- JPEG recording- RAW recording- Number of remaining shots- Maximum burst (2 digit display)- Highlight tone priority(D+)- White balance correction- Memory card information- Battery check icon=======================================LCD monito- 3.0" TFT LCD- 920000 pixels- 160° angle of view- 7 brightness levels- Anti-reflection=======================================LCD Live view- Live TTL display of scene from CMOS image sensor- 100% frame coverage- 30 frames per second- Real-time evaluative metering using CMOS image sensor- Best view or exposure simulation- Grid optional- Histogram- Magnify optional (5x or 10x at AF point)- Quick- or Live mode AF=======================================Flash- No built-in flash unit- E-TTL II auto flash / metered manual- Flash compensation +/-3.0 EV in 0.3 or 0.5 EV increments- X-Sync: 1/300 sec (EX series Speedlites only)- Hot-shoe & PC Terminal=======================================Drive modes- Single- Silent (single frame)- High-speed continuous: 10 fps- Low-speed continuous: 3 fps- Self-timer: 2 or 10 sec (3 sec with mirror lock-up)=======================================Burst buffer- Large/Fine JPEG: 121 frames- RAW: 28 framesOrientation sensor : YesCustom functions : 62 custom functionsMenu languages- English- German- French- Dutch- Danish- Portuguese- Finnish- Italian- Norwegian- Swedish- Spanish- Greek- Russian- Polish- Czech- Hungarian- Romanian- Ukrainian- Turkish- Arabic- Thai- Simplified Chinese- Traditional Chinese- Korean- Japanese=======================================Wireless : Via WFT-E2/E2 II(optional)Connectivity- USB 2.0 Hi-Speed- Video out- HDMI mini output- External microphone- N3 type wired remote control- PC Sync flash terminal=======================================Storage- Compact Flash Type I or II (supports UDMA)- SD card slot (supports SD/SDHC)- External USB hard drives (requires WFT-E2/E2A)Power- Lithium-Ion LP-E4 rechargeable battery (supplied & charger)- AC adapterDimensions : 156 x 156.6 x 80 mm (6.2 x 6.2 x 3.1 in)Weight (no batt) : 1180 g (2.6 lb)