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Sony a7III Mirrorless Camera Body vs Sony FX30 Cinema Camera

Buy the a7 III if you shoot stills and video in roughly equal measure. Its full-frame 24.2MP sensor, 693-point phase-detect AF and 5-axis stabilization make it the more versatile camera. Buy the FX30 if video is the job: it is a cinema body with a built-in cooling fan, dual base ISO, 4K at up to 120fps and unlimited recording, plus dual card slots and a tally lamp. The a7 III is the better all-rounder; the FX30 is the better video tool.

  • Choose the Sony a7 III if you want one camera for full-frame stills and 4K video with strong autofocus and in-body stabilization.
  • Choose the Sony FX30 if you mainly shoot video and want a Super 35 cinema body built for long takes, high frame rates and rigging.

Prices

  • Sony a7III Mirrorless Camera Body: $1,848.89 at eBay (last seen Nov 9)
  • Sony FX30 Cinema Camera: $1,549.00 at Abe's of Maine (last seen Nov 9)
  • Difference: the Sony FX30 Cinema Camera is $299.89 cheaper than the Sony a7III Mirrorless Camera Body at the latest prices (Nov 9)
Sony
Sony a7III Full Frame Mirrorless Camera Body

Sony a7III Mirrorless Camera Body

Sony a7III Full Frame Mirrorless Camera Body

$1,848.89at eBayChecked Nov 9
See all prices and details
Visit eBay

Store links may earn us a commission.

Pros
  • Full-frame sensor gives better low light and shallower depth of field
  • 693-point phase-detect AF tracks moving subjects well
  • Built-in EVF suits handheld stills shooting
  • 5-axis stabilization rated at 5 stops
  • Long battery life for a mirrorless body
Cons
  • Single card slot
  • 8-bit video, no 10-bit or S-Cinetone
  • 4K capped at 30fps
  • No cooling fan, so long takes can overheat
Sony
Sony FX30 Digital Cinema Camera

Sony FX30 Cinema Camera

Sony FX30 Digital Cinema Camera

4.8(477 ratings)
$1,549.00at Abe's of MaineChecked 20 h ago
See all prices and details
Visit Abe's of Maine
Pros
  • 4K at up to 120fps with 10-bit 4:2:2
  • Dual base ISO for cleaner shadows in low light
  • Built-in fan allows long, uninterrupted recording
  • Dual card slots including CFexpress Type A
  • S-Cinetone and cinema-oriented picture controls
Cons
  • APS-C sensor, so weaker in very low light than full frame
  • No electronic viewfinder
  • Heavier and bulkier for stills
  • 20.1MP stills are lower resolution

What separates them

Sony a7III Mirrorless Camera BodySony FX30 Cinema Camera
SensorFull-frame 24.2MP back-illuminated CMOSAPS-C (Super 35) 20.1MP back-illuminated CMOS
Mount and lensesSony E-mount, full-frame lensesSony E-mount, APS-C lenses or full-frame glass in crop
Autofocus693 phase-detect plus 425 contrast points with Eye AFFast hybrid AF with real-time Eye AF for humans and animals, 90% coverage
Video4K 30p with full pixel readout, no crop; 8-bit4K up to 120fps, 10-bit 4:2:2, S-Cinetone, unlimited recording with fan
Stabilization5-axis in-body, rated 5 stopsIn-body stabilization, active mode for handheld video
Card slotsOne SD slotDual slots, SD plus CFexpress Type A
ViewfinderBuilt-in 2.36M-dot EVFNo EVF; rear LCD only
Body and handlingCompact stills-oriented body, one battery, no fanCinema body with tally lamp, fan, rigging points, heavier

Price history

$1,868.00$1,549.00
Nov 4Nov 10
  • Sony a7III Mirrorless Camera Body: lowest $1,868.00 on Nov 9 at Best Buy; $1,868.00 on Nov 10.
  • Sony FX30 Cinema Camera: lowest $1,549.00 on Nov 10 at Abe's of Maine.

Prices at every store

Sony a7III Mirrorless Camera Body

  • BeachcameraOpen box

    In stock

    $1,398.00Checked 20 h ago
    Visit Beachcamera
  • eBayPre-owned

    Availability unknownSold by tenecela (0% positive, 7 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $750.00Free shippingChecked Nov 9
    Visit eBay
  • eBayRefurbished

    Availability unknownSold by titan.deals (100% positive, 27,600 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $999.99Free shippingChecked Nov 9
    Visit eBay
  • eBayNew

    Availability unknownSold by stepburk (98.9% positive, 6,200 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $1,848.89Free shippingChecked Nov 9
    Visit eBay

Store links may earn us a commission.

All 3 stores and price history →

Sony FX30 Cinema Camera

  • Abe's of MaineNew

    In stock

    $1,549.00Checked 20 h ago
    Visit Abe's of Maine
  • WalmartNew

    In stockSold by BUFFALO PHOTO

    $1,603.99Checked 20 h ago
    Visit Walmart
  • Willoughby's Photo EmporiumNew

    In stock

    $1,749.00Checked 20 h ago
    Visit Willoughby's Photo Emporium
  • Lowe'sNew

    Availability unknown

    $1,604.99Checked Nov 4
    Visit Lowe's

Also available at

  • WalmartCheck price at Walmart
All 21 stores and price history →

Specs compared

SpecSony a7III Mirrorless Camera BodySony FX30 Cinema Camera
Sensor SizeFull Frame SensorAPS-C
With VideoYes—
Resolution24.2 MP—
ISO Sensitivity—Dual Base ISO
Focal Length—15mm
Lens Highlights—Interchangeable Lens
Lens Mount—Sony E-Mount
35mm Equivalent Focal Length—27 - 75 mm
Lens System—Sony Alpha
Lens Type—Weitwinkelobjektiv
Max Aperture—f/1.8
Filter Size—55 mm
Show all 31 specsShow fewer specs
SpecSony a7III Mirrorless Camera BodySony FX30 Cinema Camera
Max View Angle—Wide-angle
Max Shutter Speed—1/8000 s
Memory Card Compatibility—SDXC, CFexpress Type A
Memory Card Type—SDXC, CFexpress Type A
Internal Storage—No
Max Video Resolution—4K
Video Resolution—4K
Digital Video Format—XAVC S, XAVC HS
Video Highlights—High-speed Recording

What reviewers say

Sony a7III Mirrorless Camera Body

Reviewers and owners rate the a7III highly for autofocus, low-light image quality and battery life, and many still call it one of the best value full-frame bodies. Complaints center on the menus, the rear screen and video limits.

What people mention
  • AutofocusPraisedOwners say eye AF and wide coverage make portraits and events easy to nail.
  • Low-light image qualityPraisedReviewers report clean, detailed files at high ISO settings.
  • Battery lifePraisedOwners report shooting a full day on one charge with the larger battery.
  • MenusCriticisedReviewers and owners call the menu system dense and hard to navigate.

Sony FX30 Cinema Camera

  • 4.8 / 5477 ratings

Owners rate the FX30 very highly and treat it as the best value entry into Sony's Cinema Line. They praise the image, the 4K 120fps slow motion and the low-light dual-base ISO, and most complaints are about the crop sensor and the cost of CFexpress Type A media.

What people mention
  • Image qualityPraisedOwners call the 4K footage detailed and easy to grade, with S-Cinetone usable straight out of camera.
  • Slow motionPraised4K at 120fps is the feature buyers mention most, and they say it looks clean for the price.
  • Low lightMixedDual-base ISO helps, but the APS-C sensor shows noise sooner than full-frame bodies.

Questions and answers

Which is better for stills photography?
The a7 III. It has a higher-resolution full-frame sensor, a built-in EVF and a stills-first control layout. The FX30 is built for video and has no viewfinder.
Which is better for video?
The FX30. It records 4K at up to 120fps in 10-bit 4:2:2, has dual base ISO, dual card slots and a fan for long takes. The a7 III tops out at 4K 30p in 8-bit.
Does the FX30 have a viewfinder?
No. It relies on its rear LCD. The a7 III has a built-in 2.36M-dot EVF, which many stills shooters prefer.
Which handles low light better?
The a7 III's larger full-frame sensor generally gives cleaner high-ISO stills. The FX30's dual base ISO helps video in controlled low-light shooting.
Can I use the same lenses on both?
Yes, both use the Sony E-mount. Full-frame lenses work on the FX30 but are cropped to its APS-C sensor area.
Is the FX30 worth stepping up to for a video shooter?
Yes, if video is your main work. The 10-bit recording, high frame rates, dual slots and fan are real advantages the a7 III does not offer.

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More comparisons

  • Nikon Z 5 Mirrorless Camera Lens vs Sony a7III Full Frame Mirrorless Camera Body
  • Nikon Z 5 Mirrorless Camera Lens vs Sony FX30 Digital Cinema Camera
Sensor Type
—
CMOS
Sensor Highlights—Back-illuminated
Sensor Features—Back-illuminated
Sensor Field Coverage—90% (AF system coverage)
Effective Megapixels—20.1 MP
color—Black
Lens—Body Only, Separate
Image Stabilization—Yes
Memory Cards—Secure Digital XC (SDXC)
Sensor Format—APS-C
  • Media costCriticisedCFexpress Type A cards and readers are expensive, and some owners stick to SDXC to save money.