• APS-C 372.9mm2
  • 12.3 megapixels
  • ISO 200 - 3200
  • 35mm 858.0mm2
  • 33.0 megapixels
  • ISO 100 - 51,200

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Differences

Nikon D90 advantages over Sony A7 IV

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • More telephoto lens reach
    158 mm vs 70 mm
    Capture objects farther away with the kit lens
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Bigger JPEG buffer
    Unlimited vs 828 shots
    Take more JPEG shots before waiting (burst mode)

Sony A7 IV advantages over Nikon D90

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Shoot 4K video
    4K (UHD) vs 720p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • 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
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Newer
    2 years vs 16 years old
    Newer cameras often support more advanced features
  • More dots on screen
    3680k vs 922k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    33.0 vs 12.3 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Faster JPEG shooting
    10.0 fps vs 4.5 fps
    Faster JPEG shooting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • HDMI out
    Both provide
    Use HDMI output to monitor or review 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

  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance

User reviews

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Review Excerpt

The Competition

Compared to Sony DSLR-A550

Nikon D90
Sony DSLR-A550
  • $1300
  • APS-C
  • Lens selection
  • Fast startup
  • $859
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Sony A7 IV
Sony DSLR-A550
  • $2498
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $859
  • APS-C
  • More telephoto lens reach
  • Internal flash

Compared to Sony DSLR-A500

Nikon D90
Sony DSLR-A500
  • $1300
  • APS-C
  • Lens selection
  • Fast startup
  • $850
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Sony A7 IV
Sony DSLR-A500
  • $2498
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $850
  • APS-C
  • More telephoto lens reach
  • Internal flash

Compared to Pentax K-5

Nikon D90
Pentax K-5
  • $1300
  • APS-C
  • Less expensive
  • Fast startup
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Higher effective ISO
Sony A7 IV
Pentax K-5
  • $2498
  • 35mm
  • Focus peaking
  • Larger sensor
  • $800
  • APS-C
  • Lens selection
  • More telephoto lens reach

Compared to Nikon Z7 II

Nikon D90
Nikon Z7 II
  • $1300
  • APS-C
  • Bigger pixels
  • More telephoto lens reach
  • $2530
  • 35mm
  • Focus peaking
  • Larger sensor
Sony A7 IV
Nikon Z7 II
  • $2498
  • 35mm
  • Tilt-swivel screen
  • Bigger pixels
  • $2530
  • 35mm
  • On-sensor phase detect
  • Top deck display

Compared to Canon R6 Mark II

Nikon D90
Canon R6 Mark II
  • $1300
  • APS-C
  • More telephoto lens reach
  • Internal flash
  • $2754
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
Sony A7 IV
Canon R6 Mark II
  • $2498
  • 35mm
  • In-camera panoramas
  • NFC
  • $2754
  • 35mm
  • Slower slow-motion
  • Bigger pixels
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