• APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200
  • 35mm 860.4mm2
  • 16.2 megapixels
  • ISO 100 - 12,800

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Differences

Pentax K-3 advantages over Nikon Df

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Less expensive
    $999 vs $2997
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • More telephoto lens reach
    203 mm vs 50 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More cross-type AF points
    25 vs 9
    Cross-type AF points improve autofocus performance
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.14 vs 0.27 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.4 vs 16.2 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Optional anti-aliasing filter
    Optional vs Fixed
    Lets you choose sharper photos or reduced moiré
  • Wider angle kit lens
    27 mm vs 50 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    7.1 fps vs 5.4 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    7.1 fps vs 5.4 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Nikon Df advantages over Pentax K-3

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.31 vs 3.91 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.55 vs 0.9 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    3,279 vs 1,216 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 1400 vs 560 shots
    Capture more photos
  • More viewfinder magnification
    0.70x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More AF points
    39 vs 27
    More AF points improve autofocus
  • Bigger JPEG buffer
    Unlimited vs 75 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    204800 vs 51200 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • HDMI out
    Both provide
    Use an external screen to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Pentax K-3

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Review Excerpt

  • Top-notch image quality; Great ergonomics in a compact body; Unique on-demand low-pass filtering; Broad sensitivity range; Large and bright viewfinder for an APS-C camera; Dual card slots; Optional Wi-Fi remote control

  • AE Lock button is poorly located; Below-average battery life for a DSLR; Rather dated-looking menu system; Requires a different battery grip accessory than its predecessors; Less third-party support than some rivals

  • Same sensor and processor as professional D4; Great image quality; Arguably the best available-light shooter in its class; Handsome, retro styling; Weather-sealed design; Big, clear full-frame viewfinder; Excellent battery life

  • Expensive; Bulky, yet handgrip is quite modest; Some controls are clumsy; Plastic body panels don't gel with retro aesthetic; Autofocus isn't in the same league as image quality; No AF assist lamp; No movie capture; No portrait grip; Single card slot

The Competition

Compared to Canon 5D Mark III

Pentax K-3
Canon 5D Mark III
  • $836
  • APS-C
  • Focus peaking
  • Less expensive
  • $2817
  • 35mm
  • Larger sensor
  • Bigger pixels
Nikon Df
Canon 5D Mark III
  • $2747
  • 35mm
  • Bigger pixels
  • Higher effective ISO
  • $2817
  • 35mm
  • External Mic Jack
  • More cross-type AF points

Compared to Sony A99

Pentax K-3
Sony A99
  • $836
  • APS-C
  • Lens selection
  • Less expensive
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Larger sensor
Nikon Df
Sony A99
  • $2747
  • 35mm
  • Lens selection
  • Bigger pixels
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen

Compared to Nikon D7100

Pentax K-3
Nikon D7100
  • $836
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $697
  • APS-C
  • Fast startup
  • Longer stills battery life
Nikon Df
Nikon D7100
  • $2747
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $697
  • APS-C
  • Less expensive
  • Fast startup

Compared to Sony A77 II

Pentax K-3
Sony A77 II
  • $836
  • APS-C
  • Lens selection
  • Less expensive
  • $1198
  • APS-C
  • Tilt-swivel screen
  • In-camera panoramas
Nikon Df
Sony A77 II
  • $2747
  • 35mm
  • Lens selection
  • Larger sensor
  • $1198
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Nikon D7200

Pentax K-3
Nikon D7200
  • $836
  • APS-C
  • Focus peaking
  • Less expensive
  • $997
  • APS-C
  • Fast startup
  • Built-in Wi-Fi
Nikon Df
Nikon D7200
  • $2747
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $997
  • APS-C
  • Less expensive
  • Fast startup
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