Canon EOS Rebel XTi vs Pentax K-3 Mark III Monochrome

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      Specifications

      General Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      BrandCanonPentax
      ModelEOS Rebel XTiK-3 Mark III Monochrome
      Predecessor ModelCanon EOS Rebel XT
      Successor ModelCanon EOS Rebel XSi
      MSRP$2199 (body only)
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeDSLRDSLR
      Video Capture
      Sensor Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Sensor TypeCMOSCMOS
      Sensor SizeAPS-CAPS-C
      Sensor Dimensions22.2 x 14.8 mm23.3 x 15.5 mm
      Total Pixels10.1 Megapixel26.78 Megapixel
      Effective Pixels10.0 Megapixel25.73 Megapixel
      Low Pass Filter
      Native ISO Range100 - 1,600200 - 1,600,000
      Sensor Shift High Resolution Mode
      Photo Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      ProcessorPRIME V
      Max Image Resolution3888 x 25926192 x 4128
      Other Resolutions2816 x 1880, 1936 x 1288
      Image Aspect Ratios3:23:2
      Image File FormatDNG, JPEG, RAW
      JPEG Quality LevelsFine, NormalBest, better, good
      Bit Depth14-Bit
      Color SpacesRGB, Adobe RGB
      Timelapse Recording
      White BalancePresets: Auto, CTE, Cloudy, Color Temperature, Daylight, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten
      Focus Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Focusing SystemDual Pixel CMOS AF
      Autofocus ModesMulti-area
      Selective single-point
      Single
      Continuous      		Multi-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View
      Lens ServoContinuous-Servo AF, Manual Focus, Single-Servo AF
      AF Detection Range-3 to +19 EV
      Number of Focus Points9101
      Number of Cross-type Focus Points25
      Touch-to-Focus
      Live View Autofocus
      Animal Eye Detection
      Vehicle Tracking Mode
      Insect Tracking Mode
      Contrast Detection for Autofocus
      Phase Detection for Autofocus
      Focusing ScreenNatural-Bright-Matte III focusing screen
      Optics Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Lens MountCanon EF/EF-SPentax KAF2
      Crop Factor1.6x1.5x
      Image StabilizationSensor Shift
      Image Stabilization Compensation5.5 stops
      Digital Image Stabilization
      Screen Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Screen TypeFixedFixed
      Screen TechnologyTFT LCD
      Touch Screen
      Screen Size2.5"3.2"
      Screen Resolution230k dot1,620k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      ViewfinderOptical (pentamirror)Optical (pentaprism)
      Viewfinder Coverage95%100%
      Viewfinder Magnification0.80x1.05x
      Viewfinder Magnification (35mm equivalent)0.50x0.70x
      Viewfinder Eyepoint20.5 mm
      Diopter Adjustment-4 to +1
      Depth-of-field previewEnabled with depth-of-field preview button (with Speedlite 580EX, 430EX, MR-14EXor MT-24EX; pressing the depth-of-field preview button fires a modeling flash)
      Shutter Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Shutter TypeElectronically Controlled Vertical-travel Mechanical Focal-planeElectronic
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/4000 sec1/8000 sec
      Max Shutter Speed (Electronic)1/16000 sec
      Max Continuous Shooting3.0 fps12.0 fps
      Continuous Shooting Resolution/fps/bufferJPEG: approx. 27 frames (Large/Fine)
      RAW: approx. 10 frames
      RAW+JPEG: approx. 8 frames (Large/Fine)      		Mechanical Shutter
      Up to 12 fps at 25.7 MP for up to 55 Frames (JPEG) / 32 Frames (Raw)
      Mechanical Shutter
      Up to 7 fps at 25.7 MP for up to 100 Frames (JPEG) / 40 Frames (Raw)
      Mechanical Shutter
      Up to 2.5 fps at 25.7 MP for up to 100 Frames (JPEG) / 100 Frames (Raw)
      Flash Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Built-in Flash
      Flash ModesAuto
      On
      Red-eye reduction
      Off      		Auto
      Auto + Red-eye Reduction
      Flash On
      Flash On + Red-eye Reduction
      Slow- speed Sync
      Slow-speed Sync + Red-eye
      P-TTL
      Contrast-control-sync
      High-speed sync
      Wireless sync
      Flash Range12.00 m at ISO 100
      Max Flash Sync Speed1/200 sec1/200 sec
      Flash Compensation-2 to +1 EV
      External Flash Connectivity
      External Flash SystemP-TTL
      External Flash ConnectionHot Shoe, PC Terminal
      Exposure Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Exposure Metering ModesMulti
      Center-weighted
      Highlight-weighted
      Spot
      Exposure ModesAperture Priority, Auto, Manual, Program, Sensitivity Priority, Shutter Priority
      Metering Range+1 to +20 EV-2 to +21 EV
      Exposure Compensation±2 EV (1/3 EV, 1/2 EV increments)±5 EV (1/3 EV, 1/2 EV increments)
      Exposure Bracketing ±5 EV (2, 3, 5 shots at 1/3 EV, 1/2 EV increments)
      Exposure LockAuto: Applied in One-Shot AF mode with evaluative metering when focus is achieved
      User-set: Applied with AE lock button      		Button type (timer type: two times the meter operating time set in Custom Setting); Continuous as long as the shutter button is halfway pressed
      DXO Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      DxO Low Light ISO664
      DxO Color Depth22.1
      DxO Dynamic Range11.0
      DxO Overall Score62
      Video Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Internal Recording ModesH.264/MOV
      4K UHD: 3840 x 2160 @ 24/30.00 fps
      Full HD: 1920 x 1080p @ 24/30.00/60.00 fps
      Interval Recording
      Video FormatsMPEG-4, H.264
      Max Video Resolution3840 x 2160
      Unlimited Video Recording
      Recording Limit25 min
      Terminals Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Audio I/O1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
      1 x 1/8" / 3.5 mm TRS Stereo Microphone Input
      Power I/O1 x USB-C Input/Output
      Other I/O1 x USB-C (USB 3.2 / 3.1 Gen 1) Data Input/Output (Shared with Power Input)
      1 x 2.5 mm Sub-Mini Control Input
      1 x PC Sync Socket Output
      USB SpeedUSB 2.0 (480 Mbit/sec)USB 3.2 Gen 1x1 (5 GBit/sec)
      HDMI Output Micro
      SpeakerMono
      Built-in MicrophoneStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi Version802.11b/g/n, 2.4 GHz
      Built-In Bluetooth
      Mobile App Compatible *As of April, 2023: Check with manufacturer for the most up-to-date compatibility
      Remote Control E3 connector, InfraRed (Remote control with Remote Switch RS-60E3 or Wireless Remote Controllers RC-1/RC-5) via wireless
      Environmental Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Environmental Sealing
      Operating Temperature32-104° F/0-40° C22 to 72°F / -10 to 40°C
      Operating Humidity85% or less0 to 85%
      Physical Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Dimensions127 x 94 x 65 mm (5 x 3.7 x 2.56")135 x 104 x 74 mm (5.31 x 4.09 x 2.91")
      Weight (inc. batteries)556 g (1.23 lb / 19.61 oz)820 g (1.81 lb / 28.92 oz)
      Box Dimensions (LxWxH)8.3 x 6.9 x 5.1"
      Package Weight3.045 lb
      Power and Storage Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Battery PackD-LI90
      Battery Life800 shots
      USB Charging
      Internal Storage
      External StorageSingle Slot: CompactFlash (Type I/II)Slot 1: SD/SDHC/SDXC (UHS-II)
      Slot 2: SD/SDHC/SDXC (UHS-I)
      Other Canon EOS Rebel XTi Pentax K-3 Mark III Monochrome
      Self Timer 10 sec 2 sec with mirror lock-up
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium Alloy
      Electronic Level Gauge


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