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Tech head-to-head

Nikon Z6 IIvsSony a7 III

Nikon Z6 II takes 3 of the 5 axes to Sony a7 III's 1, and Performance lands level. Overall it is 8.4 to 8.1.

Nikon Z6 II

Nikon

8.4

The full-frame body with the fewest used-market catches: sealed, stabilized, and kind to old Nikon glass.

Price and availability change constantly, so we don't quote them here — the link opens current listings on eBay. eBay listings come from individual sellers: condition, battery health, and what's in the box differ from one to the next, so read the listing and the return terms before you buy.

Sony a7 III

Sony

8.1

The full-frame body most people start with used: great sensor, huge lens pool, cramped grip and menus.

Price and availability change constantly, so we don't quote them here — the link opens current listings on eBay. eBay listings come from individual sellers: condition, battery health, and what's in the box differ from one to the next, so read the listing and the return terms before you buy.

Where they diverge

The widest gap is Design, Nikon Z6 II ahead 8.4 to 7.2. They come closest on Durability, 8.4 to 7.8. Left of center is Nikon Z6 II, right is Sony a7 III.

Nikon Z6 II versus Sony a7 III — axis scores out of 10Horizontal bar chart of editorial scores out of 10 across 5 axes. Bars for Nikon Z6 II run left from the axis labels, bars for Sony a7 III run right. Nikon Z6 II: Performance 8.8, Value 8.0, Durability 8.4, Ease of use 8.6, Design 8.4. Sony a7 III: Performance 8.8, Value 9.0, Durability 7.8, Ease of use 7.6, Design 7.2.Nikon Z6 II (left)Sony a7 III (right)PerformanceNikon Z6 II — Performance 8.8 out of 108.8Sony a7 III — Performance 8.8 out of 108.8ValueNikon Z6 II — Value 8.0 out of 108.0Sony a7 III — Value 9.0 out of 109.0DurabilityNikon Z6 II — Durability 8.4 out of 108.4Sony a7 III — Durability 7.8 out of 107.8Ease of useNikon Z6 II — Ease of use 8.6 out of 108.6Sony a7 III — Ease of use 7.6 out of 107.6DesignNikon Z6 II — Design 8.4 out of 108.4Sony a7 III — Design 7.2 out of 107.2Editorial score out of 10 — higher is better

Which one to pick

Take the Nikon Z6 II

Leads on Durability, Ease of use and Design.

  • You own F-mount lenses and want them to keep working through the FTZ adapter
  • You shoot in rain or dust and want weather sealing on a used budget
  • Two card slots matter because you photograph events you can't reshoot

Take the Sony a7 III

Leads on Value.

  • You want full frame with stabilization for the least outlay
  • You want the widest choice of used and third-party lenses (Sigma, Tamron, Samyang, Viltrox)
  • Battery life matters, since the NP-FZ100 lasts well past a day of casual shooting

Performance scores identically, so that axis can't break the tie.

What each one gets wrong

Nikon Z6 II

  • You'd want deep bursts but only own SD cards, since the SD slot fills the buffer sooner
  • Subject-tracking autofocus for birds or fast sport is the main job

Sony a7 III

  • Your hands are large and a shallow grip will annoy you every day
  • You need 4K at 60p or 10-bit video

Specs, side by side

SpecNikon Z6 IISony a7 III
Sensor24.5MP full-frame BSI CMOS24.2MP full-frame BSI CMOS
Stabilization5-axis in-body5-axis in-body
BurstUp to 14 fpsUp to 10 fps
Video4K up to 60p (1.5x crop at 60p)4K up to 30p
Card slotsCFexpress Type B/XQD + SD UHS-IIDual SD (one UHS-II)
BatteryEN-EL15cNP-FZ100, about 610 shots (CIPA, viewfinder)
MountNikon ZSony E

Rankings they both appear in

Questions

Nikon Z6 II or Sony a7 III — which should I buy?
Nikon Z6 II leads on Durability, Ease of use and Design. If Value matters more to you, take the Sony a7 III instead.
Is 0.3 a real difference?
Barely. Nikon Z6 II averages 8.4 and Sony a7 III averages 8.1, and the total is the plain average of 5 axes, so 0.3 is what one axis moving 1.5 looks like after averaging. The axis split, 3-1, tells you more.
Which one ranks higher in "Used mirrorless bodies that still earn their keep"?
Nikon Z6 II sits at #1 in "Used mirrorless bodies that still earn their keep", Sony a7 III at #3.