• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 12,800
  • APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 6400

Buy From

Differences

Pentax K-r advantages over Canon T3i

  • Larger sensor
    APS-C vs APS-C
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.53 vs 4.30 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.30 vs 1.5 sec
    Faster startup lets you catch the moment
  • More cross-type AF points
    9 vs 1
    Cross-type AF points improve autofocus performance
  • Less shutter lag
    0.10 vs 0.28 sec
    Focus and take a photo quickly (wide angle)
  • Faster JPEG shooting
    5.6 fps vs 3.6 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    30 vs 9 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/6000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 12800 ISO
    Higher extended ISO can give more low-light flexibility

Canon T3i advantages over Pentax K-r

  • Less expensive
    $600 vs $850 (MSRP)
    Save money for lenses or accessories
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • More telephoto lens reach
    216 mm vs 84 mm
    Capture objects farther away with the kit lens
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    18.0 vs 12.4 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting 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

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Neither provide
    Much better viewfinder picture fidelity
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

Buy From

Your purchases support this site

Buy the Pentax K-r

Your purchases support this site

Buy the Canon T3i

Review Excerpt

  • Excellent image quality; Good grip; Full HD video recording; Swiveling LCD; Very fast autofocus; HDMI output.

  • Slow frame rate for sports shooting; Tendency to overexpose in bright sunlight; Live View AF is slow; No microfocus adjustment.

  • Read our Canon T3i Full Review

The Competition

Compared to Nikon D3000

Pentax K-r
Nikon D3000
  • $850
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup
  • $450
  • APS-C
  • Less expensive

Compare Pentax K-r vs Nikon D3000

Canon T3i
Nikon D3000
  • $549
  • APS-C
  • Tilt-swivel screen
  • Higher effective ISO
  • $450
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Canon T3i vs Nikon D3000

Compared to Pentax K-x

Pentax K-r
Pentax K-x
  • $850
  • APS-C
  • Fast startup
  • External Mic Jack
  • $702
  • APS-C
  • Less expensive
  • Shoots 24p video

Compare Pentax K-r vs Pentax K-x

Canon T3i
Pentax K-x
  • $549
  • APS-C
  • Tilt-swivel screen
  • More telephoto lens reach
  • $702
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization

Compare Canon T3i vs Pentax K-x

Compared to Nikon D3100

Pentax K-r
Nikon D3100
  • $850
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup
  • $700
  • APS-C
  • Less expensive
  • Higher effective ISO

Compare Pentax K-r vs Nikon D3100

Canon T3i
Nikon D3100
  • $549
  • APS-C
  • Less expensive
  • Tilt-swivel screen
  • $700
  • APS-C
  • Bigger pixels
  • Fast startup

Compare Canon T3i vs Nikon D3100

Compared to Pentax K-5

Pentax K-r
Pentax K-5
  • $850
  • APS-C
  • Fast startup
  • $800
  • APS-C
  • Higher effective ISO
  • More dynamic range

Compare Pentax K-r vs Pentax K-5

Canon T3i
Pentax K-5
  • $549
  • APS-C
  • Tilt-swivel screen
  • More telephoto lens reach
  • $800
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization

Compare Canon T3i vs Pentax K-5

Compared to Canon T4i

Pentax K-r
Canon T4i
  • $850
  • APS-C
  • Larger sensor
  • In-Camera Image Stabilization
  • $690
  • APS-C
  • Tilt-swivel screen
  • Touchscreen

Compare Pentax K-r vs Canon T4i

Canon T3i
Canon T4i
  • $549
  • APS-C
  • $690
  • APS-C
  • Touchscreen
  • Fast startup

Compare Canon T3i vs Canon T4i

Compare Other Cameras?