• 1.5 inch 261.8mm2
  • 14.3 megapixels
  • 28.00mm - 112.00mm (35mm eq.)
  • APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200

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Differences

Canon G1X advantages over Pentax K-3

  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Bigger RAW buffer
    Unlimited vs 24 shots
    Larger buffer for RAW shots (burst mode)

Pentax K-3 advantages over Canon G1X

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-C vs 1.5 inch
    More sensor area. Bigger is (generally) better.
  • Fast startup
    ~0.90 vs 1.9 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,216 vs 644 iso
    Take photos in low light with less noise
  • More dynamic range
    13.4 vs 10.8 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 560 vs 250 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Less shutter lag
    0.14 vs 0.70 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.4 vs 14.3 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
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    7.1 fps vs 4.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    75 vs 6 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    7.1 fps vs 1.1 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • 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

Review Excerpt

  • Large-sensor image quality. Sharp lens with useful zoom range. Tilt/swivel LCD. Twin dials. Smaller than competing interchangeable-lens cameras with a similar lens. Lots of photographer-friendly features.

  • Not as small as you might hope. Mediocre burst shooting and autofocus speed. Far too easy to accidentally change exposure compensation. Viewfinder is of surprisingly little use. Battery life could be better.

  • 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

The Competition

Compared to Sigma DP1 Merrill

Canon G1X
Sigma DP1 Merrill
  • $576
  • 1.5 inch
  • Tilt-swivel screen
  • Eye-level viewfinder
  • $849
  • APS-C
  • Larger sensor
  • Bigger pixels
Pentax K-3
Sigma DP1 Merrill
  • $699
  • APS-C
  • Focus peaking
  • Eye-level viewfinder
  • $849
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Nikon D7100

Canon G1X
Nikon D7100
  • $576
  • 1.5 inch
  • Tilt-swivel screen
  • In-Camera Image Stabilization
  • $830
  • APS-C
  • Larger sensor
  • Fast startup
Pentax K-3
Nikon D7100
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $830
  • APS-C
  • Fast startup
  • Longer stills battery life

Compared to Nikon D5300

Canon G1X
Nikon D5300
  • $576
  • 1.5 inch
  • In-Camera Image Stabilization
  • Integrated ND filter
  • $593
  • APS-C
  • Larger sensor
  • Fast startup
Pentax K-3
Nikon D5300
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $593
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compared to Sigma dp2 Quattro

Canon G1X
Sigma dp2 Quattro
  • $576
  • 1.5 inch
  • Tilt-swivel screen
  • Eye-level viewfinder
  • $899
  • APS-C
  • Larger sensor
  • Newer
Pentax K-3
Sigma dp2 Quattro
  • $699
  • APS-C
  • Focus peaking
  • Eye-level viewfinder
  • $899
  • APS-C
  • Higher max flash sync

Compared to Canon G1X Mark III

Canon G1X
Canon G1X Mark III
  • $576
  • 1.5 inch
  • Bigger pixels
  • More telephoto lens reach
  • $1099
  • APS-C
  • Focus peaking
  • Larger sensor
Pentax K-3
Canon G1X Mark III
  • $699
  • APS-C
  • Larger sensor
  • Fast startup
  • $1099
  • APS-C
  • Tilt-swivel screen
  • Touchscreen
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