• APS-C 372.9mm2
  • 12.3 megapixels
  • ISO 200 - 3200
  • APS-C 368.2mm2
  • 16.2 megapixels
  • ISO 100 - 6400

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Advantages

Nikon D90 over Nikon D5100

  • Fast startup
    0.30 vs 0.50 sec
    Faster startup lets you catch the moment
  • Pentaprism viewfinder
    Pentaprism vs Pentamirror
    Much better viewfinder picture fidelity
  • Faster RAW shooting
    2.9 fps vs 1.3 fps
    Faster RAW shooting in single-shot mode
  • Faster JPEG shooting
    2.8 fps vs 1.4 fps
    Faster JPEG shooting (single-shot mode)
  • Kit lens zoom ratio
    5.8x vs 3.0x
    Zooming is easier than walking

Nikon D5100 over Nikon D90

  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • External Mic
    Jack vs No jack
    Improved sound fidelity when shooting video
  • 1080p
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    16.2 vs 12.3 megapixels
    Higher resolution photos
  • Newer
    4 years vs 6 years old
    Newer cameras often support more advanced features
  • Bigger JPEG buffer
    Unlimited vs 20 shots
    Take more JPEG shots before waiting (single-shot mode)
  • Bigger RAW buffer
    Unlimited vs 13 shots
    Larger buffer for RAW shots (single-shot mode)
  • Higher extended ISO
    25600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Review Excerpt

  • Side-mounted tilt / swivel LCD screen; same sensor and processing as the Nikon D7000; good speed and battery life; in-camera HDR and filter effects; Full HD video capture with aperture control; audio levels control and external microphone jack.

  • AF-S lens mount doesn't offer autofocus with screw-drive lenses; popup flash isn't the greatest; no built-in wireless flash control; HDR function doesn't microalign source images.

The Competition

Compared to Canon 7D

Nikon D90
Canon 7D
  • $766
  • APS-C
  • Larger sensor
  • Fast startup
  • $1365
  • APS-C
  • 60p
  • More cross-type AF points
Nikon D5100
Canon 7D
  • $590
  • APS-C
  • Larger sensor
  • Tiltable Screen
  • $1365
  • APS-C
  • 60p
  • More cross-type AF points

Compared to Nikon D7000

Nikon D90
Nikon D7000
  • $766
  • APS-C
  • Fast startup
  • $873
  • APS-C
  • More cross-type AF points
  • External Mic
Nikon D5100
Nikon D7000
  • $590
  • APS-C
  • Tiltable Screen
  • Lighter weight
  • $873
  • APS-C
  • More cross-type AF points
  • Dual card slots

Compared to Canon T3i

Nikon D90
Canon T3i
  • $766
  • APS-C
  • Larger sensor
  • Fast startup
  • $499
  • APS-C
  • Tiltable Screen
  • 60p
Nikon D5100
Canon T3i
  • $590
  • APS-C
  • Larger sensor
  • Fast startup
  • $499
  • APS-C
  • 60p
  • Faster RAW shooting

Compared to Canon T5i

Nikon D90
Canon T5i
  • $766
  • APS-C
  • Larger sensor
  • Fast startup
  • $699
  • APS-C
  • Tiltable Screen
  • Touchscreen
Nikon D5100
Canon T5i
  • $590
  • APS-C
  • Larger sensor
  • Fast startup
  • $699
  • APS-C
  • Touchscreen
  • On-sensor phase detect

Compared to Pentax K-500

Nikon D90
Pentax K-500
  • $766
  • APS-C
  • HDMI out
  • Kit lens zoom ratio
  • $499
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Nikon D5100
Pentax K-500
  • $590
  • APS-C
  • Tiltable Screen
  • External Mic
  • $499
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
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