• APS-C 372.1mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 25,600

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Differences

Pentax K-5 advantages over Nikon D5500

  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 4.81 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Pentaprism vs Pentamirror
    Much better viewfinder picture fidelity
  • Less shutter lag
    0.10 vs 0.20 sec
    Focus and take a photo quickly (wide angle)
  • More viewfinder magnification
    0.61x vs 0.55x
    Get a bigger view of the scene through the eye-level viewfinder
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    6.5 fps vs 4.9 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    6.5 fps vs 4.0 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    23 vs 7 shots
    Larger buffer for RAW shots (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Nikon D5500 advantages over Pentax K-5

  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Fast startup
    ~0.40 vs 0.6 sec
    Faster startup lets you catch the moment
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Higher effective ISO
    1,438 vs 1,162 iso
    Take photos in low light with less noise
  • Newer
    9 years vs 13 years old
    Newer cameras often support more advanced features
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Lighter weight
    668g vs 1003g
    Lighter weight
  • More pixels
    24.2 vs 16.3 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • More AF points
    39 vs 11
    More AF points improve autofocus
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Bigger JPEG buffer
    100 vs 31 shots
    Take more JPEG shots before waiting (burst mode)

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output 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

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Pentax K-5

Your purchases support this site

Buy the Nikon D5500

Review Excerpt

  • Excellent high ISO performance, one of the best APS-C sensors yet; 6.5 fps burst mode has very good buffer depths; Weather, dust, and cold resistant; In-body Shake Reduction corrects not only horizontal / vertical, but also rotational motion.

  • Default saturation and contrast a bit high; Auto white balance too warm in tungsten light; Fewer AF points than main competitors; Only a single card slot, and no UHS-I card support (slow buffer clearing).

  • Amazingly small for a DSLR; Great image quality for its class, including superb low light and high ISO performance; Generous JPEG buffer depth; High resolution.

  • Buffer depths are shallow when shooting RAW; Lacks GPS from the predecessor; No AA filter means it's susceptible to aliasing artifacts.

The Competition

Compared to Canon T3i

Pentax K-5
Canon T3i
  • $800
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Nikon D5500
Canon T3i
  • $597
  • APS-C
  • Larger sensor
  • Touchscreen
  • $549
  • APS-C
  • More telephoto lens reach
  • Has anti-aliasing filter

Compared to Nikon D5100

Pentax K-5
Nikon D5100
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Top deck display
  • $650
  • APS-C
  • Tilt-swivel screen
  • Shoots 24p video
Nikon D5500
Nikon D5100
  • $597
  • APS-C
  • Touchscreen
  • Built-in Wi-Fi
  • $650
  • APS-C
  • Bigger pixels
  • Has anti-aliasing filter

Compared to Pentax K-30

Pentax K-5
Pentax K-30
  • $800
  • APS-C
  • Fast startup
  • Longer stills battery life
  • $599
  • APS-C
  • Less expensive
  • Focus peaking
Nikon D5500
Pentax K-30
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $599
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization

Compared to Pentax K-S1

Pentax K-5
Pentax K-S1
  • $800
  • APS-C
  • Longer stills battery life
  • Top deck display
  • $502
  • APS-C
  • Less expensive
  • Focus peaking
Nikon D5500
Pentax K-S1
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $502
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization

Compared to Nikon D3400

Pentax K-5
Nikon D3400
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels
  • $497
  • APS-C
  • Built-in Bluetooth
  • Longer stills battery life
Nikon D5500
Nikon D3400
  • $597
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
  • $497
  • APS-C
  • Less expensive
  • Built-in Bluetooth
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