• Medium format 1,452.0mm2
  • 40.0 megapixels
  • ISO 200 - 1000
  • 1/2.3 inch 28.1mm2
  • 12.0 megapixels
  • 25.00mm - 100.00mm (35mm eq.)

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Differences

Pentax 645D advantages over Olympus TG-6

  • Larger sensor
    Medium format vs 1/2.3 inch
    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
  • Bigger pixels
    ~ 6.06 vs 1.54 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 800 vs 340 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    40.0 vs 12.0 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Longer exposure
    30 vs 4 sec
    Long exposures for night shots
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster shutter
    1/4000 vs 1/2000 sec
    Shoot wide open in bright light

Olympus TG-6 advantages over Pentax 645D

  • Waterproof
    Yes vs No
    Take photos underwater without destroying your camera!
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    4K (UHD) vs No
    Make sure you have a fast computer
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Thinner
    32 mm vs 119 mm
    Thinner
  • Newer
    5 years vs 14 years old
    Newer cameras often support more advanced features
  • Lighter weight
    253g vs 1480g
    Lighter weight
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Faster JPEG shooting
    20.0 fps vs 1.1 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    20.0 fps vs 1.1 fps
    Faster RAW shooting in burst mode
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    12800 vs 1600 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
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • 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
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Review Excerpt

  • Very high-resolution 40-megapixel sensor; Plentiful controls with great placement; Excellent optical viewfinder; Dual SDHC card slots; Infrared remote sensors front and back.

  • High price tag; Aliasing artifacts; Produces ~70MB RAW files.

  • Read our Pentax 645D Review

The Competition

Compared to Leica S2

Pentax 645D
Leica S2
  • $3599
  • Medium format
  • Less expensive
  • More cross-type AF points
  • $22995
  • Medium format
  • Thinner
  • More viewfinder magnification

Compare Pentax 645D vs Leica S2

Olympus TG-6
Leica S2
  • $449
  • 1/2.3 inch
  • Waterproof
  • Focus peaking
  • $22995
  • Medium format
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-6 vs Leica S2

Compared to Leica S (Typ 006)

Pentax 645D
Leica S (Typ 006)
  • $3599
  • Medium format
  • Less expensive
  • Higher effective ISO
  • $10535
  • Medium format
  • Thinner
  • More viewfinder magnification

Compare Pentax 645D vs Leica S (Typ 006)

Olympus TG-6
Leica S (Typ 006)
  • $449
  • 1/2.3 inch
  • Focus peaking
  • Waterproof
  • $10535
  • Medium format
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-6 vs Leica S (Typ 006)

Compared to Pentax 645Z

Pentax 645D
Pentax 645Z
  • $3599
  • Medium format
  • Fast startup
  • Longer stills battery life
  • $4845
  • Medium format
  • Focus peaking
  • Tiltable Screen

Compare Pentax 645D vs Pentax 645Z

Olympus TG-6
Pentax 645Z
  • $449
  • 1/2.3 inch
  • Less expensive
  • Waterproof
  • $4845
  • Medium format
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-6 vs Pentax 645Z

Compared to Olympus TG-4

Pentax 645D
Olympus TG-4
  • $3599
  • Medium format
  • Larger sensor
  • Eye-level viewfinder
  • $379
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization

Compare Pentax 645D vs Olympus TG-4

Olympus TG-6
Olympus TG-4
  • $449
  • 1/2.3 inch
  • Focus peaking
  • Slower slow-motion
  • $379
  • 1/2.3 inch
  • More pixels
  • Bigger JPEG buffer

Compare Olympus TG-6 vs Olympus TG-4

Compared to Olympus TG-5

Pentax 645D
Olympus TG-5
  • $3599
  • Medium format
  • Larger sensor
  • Eye-level viewfinder
  • $299
  • 1/2.3 inch
  • Waterproof
  • Focus peaking

Compare Pentax 645D vs Olympus TG-5

Olympus TG-6
Olympus TG-5
  • $449
  • 1/2.3 inch
  • Fast startup
  • More dots on screen
  • $299
  • 1/2.3 inch
  • Less expensive

Compare Olympus TG-6 vs Olympus TG-5

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