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PENTAX K-3 Mark III Monochrome vs PENTAX KF

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

PENTAXK-3 Mark III MonochromePENTAXKF
Overview
ReleasedApril 2023November 2022
Image and sensor
Camera typeDSLRDSLR
Sensor formatAPS-CAPS-C
Sensor typeMonochrome CMOS without colour or optical low-pass filtersCMOS without an optical low-pass filter
Sensor dimensions23.3 × 15.5 mm23.5 × 15.6 mm
Effective resolution25.73 MP24.24 MP
Largest image6192 × 41286000 × 4000
RAW recordingYesYes
Standard ISO range200–1600000100–102400
Sensor detail25.73 effective and 26.78 total megapixels; monochrome CMOS records brightness at each pixel without a colour filter array or demosaicing24.24 effective and 24.78 total megapixels; primary-colour CMOS without an optical low-pass filter; sensor-shift anti-aliasing simulator with selectable strength
Image formats14-bit PEF or DNG RAW, JPEG and simultaneous RAW/JPEG; monochrome-only Standard, Hard and Soft image profiles14-bit PEF or DNG RAW, JPEG and simultaneous RAW/JPEG; 6000×4000 single-shot native output. Pixel Shift Resolution combines four sensor-shifted exposures, requires a stable camera and can show movement artefacts
ISO detailMaker standard range ISO 200–1600000; no separate expanded range statedStandard ISO 100–102400; no separately expanded range specified
Image processor–PRIME MII with an accelerator unit (maker launch notice)
Lens and shooting
Lens mountPENTAX KAF2 bayonet mountPENTAX KAF2 bayonet mount
StabilisationSensor shiftSensor shift
Maximum continuous burst12 fps6 fps
Lens detailKAF4, KAF3, KAF2 including power zoom, KAF and KA lens compatibility; native KAF2 bayonet includes autofocus coupler, information and power contactsKAF4, KAF3, KAF2, KAF and KA lenses; KAF2 power-zoom operation is not supported. Autofocus behaviour depends on in-lens motor or the body screw drive
AutofocusSAFOX 13 through-viewfinder phase detection, 101 points including 25 cross-type; EV −3 to 19 at ISO 200, with −3 limited to f/2.8-flux-compatible points and lens. Contrast-detection live view with face detection, touch AF and focus peakingThrough-viewfinder SAFOX X phase detection with eleven points including nine central cross-type points; EV −3 to 18 at ISO 100. Live-view hybrid sensor phase/contrast autofocus with face detection, tracking, multiple/select/spot areas and focus peaking
ShutterMechanical focal-plane shutter 1/8000–30 seconds and Bulb; electronic shutter up to 1/16000 second; timed Bulb 1 second–20 minutesMechanical focal-plane 1/6000–30 seconds and Bulb; timed Bulb 10 seconds–20 minutes; electronic shutter for Pixel Shift Resolution rather than a general high-speed electronic mode
Burst detailUp to 12 fps with approximately 55 JPEGs, 32 RAW or 30 RAW/JPEG pairs at ISO 200; speed and buffer depend on lens, aperture, shutter, sensitivity and card. AP measured lower speeds with a pre-production sampleApproximately 6 fps at ISO 100, up to 40 highest-quality large JPEGs, ten RAW or eight RAW/JPEG pairs; 3 fps low-speed mode up to 100 JPEGs, sixteen RAW or eleven pairs
Stabilisation detailFive-axis sensor-shift SR II with Auto, Panning and Off modes; anti-aliasing simulator and horizon/composition adjustment. Astrotracer Types 1/2 require an optional O-GPS unit; Type 3 also listed by makerSensor-shift SR; maker claims 4.5 shutter stops in launch notice. Pixel Shift Resolution has selectable subject-motion correction, which cannot correct every moving subject. Astrotracer needs optional O-GPS2; no built-in GPS inferred
FlashExternal flash hot shoe and X-sync socket, 1/200-second syncBuilt-in retractable P-TTL flash, guide number approximately 12 at ISO 100 in metres; 28mm full-frame-equivalent coverage; 1/180-second sync and external dedicated-flash support
Exposure controlsPASM, sensitivity priority, combined shutter/aperture priority and five saved user modes; ±5 EV compensation; 307,000-pixel RGBIr metering sensorPASM, sensitivity priority and combined shutter/aperture priority; 77-segment metering and ±5 EV compensation
Video
Highest video resolution3840 × 2160 at 30 fps1920 × 1080 at 30 fps
Video detailMonochrome H.264 MOV; UHD 3840×2160 at 30/24p, Full HD 1920×1080 at 60/30/24p. Maker limit 25 minutes or 4 GB, with temperature-dependent shutdown. No 120p mode inferred from the AP tableH.264 MOV, Full HD 1920×1080 at 30/25/24p or 60i/50i; interlaced rates are fields, not progressive frames. HD 1280×720 at 60/50p; approximately 25-minute or 4 GB clip limit with temperature shutdown. 4K interval movies combine still exposures and are not real-time 4K capture
AudioBuilt-in stereo microphone; external stereo microphone input, headphone terminal, recording-level adjustment and wind-noise reductionBuilt-in stereo microphone, external stereo microphone input, adjustable recording level; microphone and cable switch share a 3.5 mm terminal
Screen and viewfinder
ViewfinderOpticalOptical
Screen size3.2″3″
Screen dots1,620,0001,037,000
TouchscreenYesNo
Tilting screenNoYes
Display detailFixed 3.2-inch capacitive touchscreen, approximately 1.62 million dots; outdoor-view adjustment and night-vision displayVari-angle three-inch TFT, approximately 1.037 million dots, air-gapless construction and tempered-glass front; not touch-sensitive (Digital Camera World). Outdoor-view and red night-vision adjustments
Viewfinder detailOptical pentaprism, approximately 100% coverage and 1.05× magnification with FA 50mm F1.4 at infinity; 20.5 mm eye relief from view window. AP's approximately 0.7× figure is equivalent magnificationOptical pentaprism, approximately 100% coverage and 0.95× magnification with FA 50mm F1.4 at infinity; approximately 20.5 mm eye relief from view window; interchangeable Natural-Bright-Matte III screen
Connections and design
Wi-FiYesYes
BluetoothYes–
Battery life (maker's claim)800 photographs460 photographs
Body weight735 g625 g
Release detailMaker Japan notice confirms 28 April 2023 local sale; earliest worldwide and UK day unconfirmed, so month precision retained. Later Ricoh notice announces ending current K-series production; surviving range pages do not prove ongoing productionMaker Japanese notice confirms 25 November 2022 local sale; earliest worldwide or UK day unconfirmed, so month precision retained. Later Ricoh notice announces ending current K-series production; surviving range pages do not prove ongoing production
Recording mediaTwo SD/SDHC/SDXC slots; slot 1 supports UHS-II, slot 2 UHS-I. Sequential, duplicate or separate RAW/JPEG recordingOne SD/SDHC/SDXC slot supporting UHS-I
PortsUSB-C USB 3.2 Gen 1, Type D micro-HDMI, microphone and headphone terminals, 2.5 mm cable-switch terminal and X-sync socketUSB 2.0 Micro-B, Type D micro-HDMI, combined 3.5 mm stereo microphone/cable-switch input; USB-C is on the external battery charger, not the camera body
Wireless connectionsIEEE 802.11b/g/n Wi-Fi at 2.4 GHz and Bluetooth 4.2 Low EnergyWi-Fi IEEE 802.11b/g/n at 2.4 GHz; maker lists channels 1–11. No Bluetooth stated in read specification
Battery life detailD-LI90 lithium-ion battery; approximately 800 shots CIPA or 250 minutes playbackD-LI109 lithium-ion battery; approximately 460 CIPA shots without flash or 400 with 50% flash use at 23°C; approximately 250 minutes playback
ChargingUSB-C in-camera charging; USB power adapter supplied, optional AC adapter required for the maker's external power-supply arrangementSupplied D-BC186 external battery charger with USB power adapter, plug and USB cable; optional K-AC168 AC adapter kit. No in-camera USB charging inferred from Tom's Guide's ambiguous battery wording
DimensionsApproximately 134.5 × 103.5 × 73.5 mm, excluding protrusionsApproximately 125.5 × 93 × 74 mm, excluding protrusions
Weight detailApproximately 735 g body only; 820 g with battery and SD cardApproximately 625 g body only or 684 g with battery and SD card; pictured 18–55mm lens excluded from these weights
MaterialsDust and weather resistant magnesium-alloy construction described in Amateur Photographer's pre-production test; maker operating temperature −10 to 40°CMaker dust and weather-resistant construction with 100 sealing points; −10 to 40°C operating range, up to 85% humidity without condensation; not waterproof
ColoursBlack with grey markings and silver SR badge; Matte Black Edition is a cosmetic finish, not another generationBlack; original Crystal Blue and Crystal White finishes each limited to 700 worldwide, retained as cosmetic variants
In the boxD-LI90 battery, USB power adapter and plug, I-USB166 cable, strap, eyecup, viewfinder/body/hot-shoe/connector covers and strap rings; Digital Camera Utility 5 installer in camera, regional contents may varyO-ST132 strap, D-LI109 battery, D-BC186 charger, USB power adapter and plug, I-USB166 cable, S-SW186 software CD, FR eyecup, FK hot-shoe cover and body-mount cover; kit includes 18–55 WR lens

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