• 1/2.3 inch 28.1mm2
  • 18.2 megapixels
  • 24.00mm - 720.00mm (35mm eq.)
  • APS-C 361.2mm2
  • 25.7 megapixels
  • ISO 100 - 1,600,000

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Differences

Sony HX99 advantages over Pentax K-3 III

  • Less expensive
    $473* vs $2344
    Save money for lenses or accessories
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    35 mm vs 73 mm
    Thinner
  • Higher max flash sync
    1/2000 vs 1/200 sec
    Reduce the effect of ambient light in flash shots
  • Lighter weight
    242g vs 820g
    Lighter weight
  • Bigger JPEG buffer
    103 vs 30 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Pentax K-3 III advantages over Sony HX99

  • Larger sensor
    APS-C vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 3.76 vs 1.26 microns
    Better low-light and dynamic range (all else equal)
  • High resolution composite
    Yes vs No
    Combine multiple shots to form a super hi-res version
  • Longer stills battery life
    More info 800 vs 370 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
  • Newer
    4 years vs 6 years old
    Newer cameras often support more advanced features
  • Higher-res screen
    540k vs 307k pixels
    More detail on the screen lets you judge focus and composition
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More viewfinder magnification
    1.05x vs 0.50x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    25.7 vs 18.2 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 None
    Lets you choose sharper photos or reduced moiré
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster JPEG shooting
    12.0 fps vs 10.0 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/8000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    1600000 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
  • 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
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    Both provide
    Make sure you have a fast computer
  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Built-in Bluetooth
    Both provide
    Always-on wireless connectivity
  • 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

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter

User reviews

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Buy the Pentax K-3 III

Review Excerpt

The Competition

Compared to Sony WX500

Sony HX99
Sony WX500
  • $473
  • 1/2.3 inch
  • Focus peaking
  • Eye-level viewfinder
  • $348
  • 1/2.3 inch
  • Less expensive
Pentax K-3 III
Sony WX500
  • $1847
  • APS-C
  • Focus peaking
  • Larger sensor
  • $348
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas

Compared to Sony HX90V

Sony HX99
Sony HX90V
  • $473
  • 1/2.3 inch
  • Shoot 4K video
  • Touchscreen
  • $448
  • 1/2.3 inch
  • Built-in GPS
  • Longer video battery life
Pentax K-3 III
Sony HX90V
  • $1847
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $448
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas

Compared to Sony HX80

Sony HX99
Sony HX80
  • $473
  • 1/2.3 inch
  • Focus peaking
  • Shoot 4K video
  • $368
  • 1/2.3 inch
  • Less expensive
Pentax K-3 III
Sony HX80
  • $1847
  • APS-C
  • Focus peaking
  • Larger sensor
  • $368
  • 1/2.3 inch
  • Less expensive
  • In-camera panoramas

Compared to Pentax KP

Sony HX99
Pentax KP
  • $473
  • 1/2.3 inch
  • Less expensive
  • Shoot 4K video
  • $999
  • APS-C
  • Larger sensor
  • Bigger pixels
Pentax K-3 III
Pentax KP
  • $1847
  • APS-C
  • Shoot 4K video
  • Touchscreen
  • $999
  • APS-C
  • Less expensive
  • Tiltable Screen

Compared to Canon 90D

Sony HX99
Canon 90D
  • $473
  • 1/2.3 inch
  • Less expensive
  • Focus peaking
  • $1099
  • APS-C
  • Larger sensor
  • 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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