• 35mm 864.0mm2
  • 24.2 megapixels
  • ISO 50 - 50,000
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000

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Differences

Leica SL (Typ 601) advantages over Pentax K-3 III

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 6.00 vs 3.76 microns
    Better low-light and dynamic range (all else equal)
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Thinner
    39 mm vs 73 mm
    Thinner
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Bigger JPEG buffer
    Unlimited vs 30 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light

Pentax K-3 III advantages over Leica SL (Typ 601)

  • Less expensive
    $2344 vs $3605*
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Longer stills battery life
    More info 800 vs 400 shots
    Capture more photos
  • Newer
    4 years vs 9 years old
    Newer cameras often support more advanced features
  • More dots on screen
    1620k vs 1040k dots
    Can mean greater resolution or a brighter screen
  • More viewfinder magnification
    1.05x vs 0.80x
    Get a bigger view of the scene through the eye-level viewfinder
  • Optional anti-aliasing filter
    Optional vs None
    Lets you choose sharper photos or reduced moiré
  • Faster JPEG shooting
    12.0 fps vs 10.6 fps
    Faster JPEG shooting (burst mode)
  • Higher extended ISO
    1600000 vs 50000 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • 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
  • Dual card slots
    Both provide
    Gives you more storage flexibility
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • 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
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Internal flash
    Neither provide
    Useful in a pinch for fill flash

User reviews

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Your purchases support this site

Buy the Pentax K-3 III

Review Excerpt

  • Superb build quality; Amazing EVF; Great image quality from RAW files; Good high ISO performance; Very good dynamic range; Very low shutter lag; Fast AF on stationary objects; Class-leading ~11 fps burst mode; 4K DCI and UHD video; Full HD up to 120p. Built-in Wi-Fi and GPS; Dual card slots; Decent battery life for its class.

  • Big for a full-frame mirrorless camera; Very slow buffer clearing; Contrast-detect AF system struggles with moving subjects; In-camera JPEGs are muted and dull; Very limited native lens selection (but supports many other Leica lenses via adapters); Expensive.

The Competition

Compared to Leica M Monochrom (Typ 246)

Leica SL (Typ 601)
Leica M Monochrom (Typ 246)
  • $3802
  • 35mm
  • Less expensive
  • Shoot 4K video
  • $7595
  • 35mm
Pentax K-3 III
Leica M Monochrom (Typ 246)
  • $1847
  • APS-C
  • Lens selection
  • Less expensive
  • $7595
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Leica M-D (Typ 262)

Leica SL (Typ 601)
Leica M-D (Typ 262)
  • $3802
  • 35mm
  • Rear display
  • Focus peaking
  • $5995
  • 35mm
Pentax K-3 III
Leica M-D (Typ 262)
  • $1847
  • APS-C
  • Rear display
  • Lens selection
  • $5995
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Pentax KP

Leica SL (Typ 601)
Pentax KP
  • $3802
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $999
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Pentax K-3 III
Pentax KP
  • $1847
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $999
  • APS-C
  • Less expensive
  • Tiltable Screen

Compared to Sony A9

Leica SL (Typ 601)
Sony A9
  • $3802
  • 35mm
  • Built-in GPS
  • Top deck display
  • $2997
  • 35mm
  • Less expensive
  • In-Camera Image Stabilization
Pentax K-3 III
Sony A9
  • $1847
  • APS-C
  • Lens selection
  • Less expensive
  • $2997
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Canon 90D

Leica SL (Typ 601)
Canon 90D
  • $3802
  • 35mm
  • Focus peaking
  • Larger sensor
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
Pentax K-3 III
Canon 90D
  • $1847
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1099
  • APS-C
  • Less expensive
  • Tilt-swivel screen
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