• APS-C 368.2mm2
  • 16.3 megapixels
  • 35.00mm (35mm eq.)
  • APS-C 366.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600

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Differences

Fujifilm X100S advantages over Sony A5100

  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Bigger pixels
    ~ 4.82 vs 3.92 microns
    Better low-light and dynamic range (all else equal)
  • Integrated ND filter
    Yes vs No
    Shoot in daylight with a large aperture or slow shutter
  • Higher max flash sync
    1/2000 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré

Sony A5100 advantages over Fujifilm X100S

  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Longer stills battery life
    More info 400 vs 330 shots
    Capture more photos
  • Thinner
    35 mm vs 53 mm
    Thinner
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    230k vs 153k pixels
    More detail on the screen lets you judge focus and composition
  • More pixels
    24.3 vs 16.3 megapixels
    Higher resolution photos
  • Bigger JPEG buffer
    67 vs 16 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    25 vs 8 shots
    Larger buffer for RAW shots (burst mode)

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
  • In-camera panoramas
    Both provide
    Stitches multiple shots into a panoramic photo
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • On-sensor phase detect
    Both provide
    Usually improves live view and video AF performance
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • 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

User reviews

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Your purchases support this site

Buy the Fujifilm X100S

Your purchases support this site

Buy the Sony A5100

Review Excerpt

  • Attractive, retro rangefinder-style design; Improved (excellent) still image quality that's even better thanks to second generation X-Trans sensor technology; Great, sharp f/2 35mm-equivalent lens; Overall better operation and performance than the X100; Addition of phase-detect pixels makes bright light autofocusing faster.

  • Low-light AF slow and inconsistent; Video quality, even at 60p, compromised by moire and lack of image stabilization; Combined four-way pad/Command dial means AF control points cumbersome to change; Too easy to bump control dials and change settings accidentally (especially the EV dial).

  • Very small and comfortable form factor; Very good image quality for its class; New dual video record function; Quick autofocus and good dynamic range.

  • Lacks an EVF and external mode dial; No hot shoe; JPEG processing at higher ISOs not as good as some competing mid-level models.

The Competition

Compared to Fujifilm X100

Fujifilm X100S
Fujifilm X100
  • $1099
  • APS-C
  • Focus peaking
  • In-camera panoramas
  • $1200
  • APS-C
  • Shoots 24p video
Sony A5100
Fujifilm X100
  • $348
  • APS-C
  • Focus peaking
  • Touchscreen
  • $1200
  • APS-C
  • Eye-level viewfinder
  • Bigger pixels

Compared to Samsung NX1100

Fujifilm X100S
Samsung NX1100
  • $1099
  • APS-C
  • Focus peaking
  • Eye-level viewfinder
  • $450
  • APS-C
  • Less expensive
  • Built-in Wi-Fi
Sony A5100
Samsung NX1100
  • $348
  • APS-C
  • Lens selection
  • Focus peaking
  • $450
  • APS-C
  • Higher-res screen
  • Hot shoe

Compared to Sony A5000

Fujifilm X100S
Sony A5000
  • $1099
  • APS-C
  • Eye-level viewfinder
  • On-sensor phase detect
  • $298
  • APS-C
  • Tiltable Screen
  • Built-in Wi-Fi
Sony A5100
Sony A5000
  • $348
  • APS-C
  • Touchscreen
  • Higher effective ISO
  • $298
  • APS-C
  • Less expensive

Compared to Fujifilm X100T

Fujifilm X100S
Fujifilm X100T
  • $1099
  • APS-C
  • $1299
  • APS-C
  • Built-in Wi-Fi
  • External Mic Jack
Sony A5100
Fujifilm X100T
  • $348
  • APS-C
  • Less expensive
  • Touchscreen
  • $1299
  • APS-C
  • Eye-level viewfinder
  • Bigger pixels

Compared to Fujifilm X100F

Fujifilm X100S
Fujifilm X100F
  • $1099
  • APS-C
  • Bigger pixels
  • $899
  • APS-C
  • Fast startup
  • Built-in Wi-Fi
Sony A5100
Fujifilm X100F
  • $348
  • APS-C
  • Less expensive
  • Touchscreen
  • $899
  • APS-C
  • Eye-level viewfinder
  • Fast startup
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