• APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 12,800
  • APS-C 366.6mm2
  • 24.4 megapixels
  • ISO 100 - 51,200

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Differences

Canon EOS M advantages over Pentax K-3

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Thinner
    32 mm vs 77 mm
    Thinner
  • Lighter weight
    503g vs 1240g
    Lighter weight

Pentax K-3 advantages over Canon EOS M

  • Lens selection
    Excellent vs Limited
    Better lens selection gives you more options
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-C vs APS-C
    More sensor area. Bigger is (generally) better.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Fast startup
    ~0.90 vs 2.7 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    1,216 vs 827 iso
    Take photos in low light with less noise
  • More dynamic range
    13.4 vs 11.2 evs
    Retain detail in highlight and shadows
  • Longer stills battery life
    More info 560 vs 230 shots
    Capture more photos
  • More telephoto lens reach
    203 mm vs 88 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Less shutter lag
    0.14 vs 0.74 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.4 vs 18.0 megapixels
    Higher resolution photos
  • 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
  • Faster JPEG shooting
    7.1 fps vs 4.2 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    75 vs 13 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster RAW shooting
    7.1 fps vs 4.4 fps
    Faster RAW shooting in burst mode
  • Bigger RAW buffer
    24 vs 6 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

Similarities

Common Strengths

  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • 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
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Buy the Pentax K-3

Review Excerpt

  • Excellent image quality similar to Rebel T4i, T5i and SL1 DSLRs, with 18-megapixel APS-C-type sensor delivering considerable resolution for a mirrorless camera; Solid build and sleek design; Bright, high-resolution 3-inch LCD touchscreen monitor; Full 1080p HD video recording that's virtually silent with an STM lens.

  • Barely acceptable autofocus speed still lags far behind most mirrorless cameras despite firmware update fix; Limited physical controls and buttons, including no Program, Priority, or Manual on Mode dial; Lacks built-in flash or electronic viewfinder option; Only two compact EF-M mount lenses currently available.

  • 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 Sony NEX-5N

Canon EOS M
Sony NEX-5N
  • $600
  • APS-C
  • Less expensive
  • Touchscreen
  • $700
  • APS-C
  • Lens selection
  • Larger sensor
Pentax K-3
Sony NEX-5N
  • $699
  • APS-C
  • Lens selection
  • Focus peaking
  • $700
  • APS-C
  • Bigger pixels
  • In-camera panoramas

Compared to Samsung NX1000

Canon EOS M
Samsung NX1000
  • $600
  • APS-C
  • Touchscreen
  • On-sensor phase detect
  • $346
  • APS-C
  • Larger sensor
  • Fast startup
Pentax K-3
Samsung NX1000
  • $699
  • APS-C
  • Lens selection
  • Focus peaking
  • $346
  • APS-C
  • Less expensive
  • Built-in Wi-Fi

Compared to Sony NEX-5R

Canon EOS M
Sony NEX-5R
  • $600
  • APS-C
  • External Mic Jack
  • $348
  • APS-C
  • Lens selection
  • Focus peaking
Pentax K-3
Sony NEX-5R
  • $699
  • APS-C
  • Lens selection
  • Eye-level viewfinder
  • $348
  • APS-C
  • Less expensive
  • Bigger pixels

Compared to Nikon D7100

Canon EOS M
Nikon D7100
  • $600
  • APS-C
  • Touchscreen
  • On-sensor phase detect
  • $845
  • APS-C
  • Lens selection
  • Larger sensor
Pentax K-3
Nikon D7100
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $845
  • APS-C
  • Fast startup
  • Longer stills battery life

Compared to Nikon D5300

Canon EOS M
Nikon D5300
  • $600
  • APS-C
  • Touchscreen
  • On-sensor phase detect
  • $594
  • APS-C
  • Tilt-swivel screen
  • Lens selection
Pentax K-3
Nikon D5300
  • $699
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $594
  • APS-C
  • Less expensive
  • Tilt-swivel screen
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