Nikon D750 vs Sony A7 II: Which Value Full-Frame Refurbished Should You Buy?

The Nikon D750 and Sony A7 II represent two different eras of full-frame photography, yet both are available in the UK used market at prices that make them genuinely compelling value propositions. The Nikon D750, released in 2014, is a DSLR that prioritises ergonomics, battery life, and optical viewfinder experience. The Sony A7 II, released in 2014, is a mirrorless camera that pioneered the full-frame mirrorless category and offers modern technology at a fraction of its original price.

Both cameras are now available for £350–£550, making them two of the best-value full-frame options in the market. This comparison examines the key differences and helps you decide which system suits your needs.

Specs Comparison

Autofocus: Sony's Advantage

The Sony A7 II has 117 phase-detect AF points, while the Nikon D750 has 51. In practice, the Sony's AF is faster to lock and more reliable in low light. However, both cameras are from 2014 and neither has the advanced autofocus capabilities of modern cameras. For static subjects and controlled shooting, both are perfectly adequate.

Verdict: Sony A7 II wins slightly on autofocus, but both are adequate for stills.

Image Quality: Effectively Equivalent

Both cameras use the same 24.3MP full-frame sensor and produce images of very similar quality. Dynamic range is excellent on both — roughly 13 stops — and both handle high ISO well, with usable results up to ISO 12800.

The Nikon's colour science is widely praised for producing warm, natural skin tones straight out of camera. Sony's files are more neutral and technically accurate. Neither is objectively better — it depends entirely on your workflow and aesthetic preference.

Verdict: Draw — Nikon has a slight colour rendering edge, Sony has a slight dynamic range edge.

Battery Life: Nikon Wins Decisively

The Nikon D750 is rated at approximately 1,230 shots per charge (CIPA) — exceptional for a full-frame camera. The Sony A7 II manages approximately 380 shots per charge. For photographers who shoot in the field without easy access to charging, this difference is enormous. You will need to carry multiple spare batteries with the Sony; the Nikon can easily handle a full day of shooting on a single charge.

Verdict: Nikon D750 wins decisively on battery life.

Ergonomics: Nikon's Optical Viewfinder

The Nikon D750 is larger and heavier (750g vs 565g) with a deeper grip that many photographers find more comfortable for extended shooting. Its optical viewfinder shows the world directly with zero lag and no battery consumption — a characteristic that many photographers find preferable to electronic viewfinders.

The Sony A7 II is considerably more compact and lighter, with an electronic viewfinder that is good but does introduce a small amount of lag. For travel and run-and-gun shooting, the Sony's size is an advantage. For studio and field work, the Nikon's ergonomics are superior.

Verdict: Nikon wins on ergonomics and optical viewfinder experience, Sony wins on portability.

Image Stabilisation: Sony Wins

The Sony A7 II has 5-axis IBIS rated at 4.5 stops — useful for handheld shooting at slow shutter speeds. The Nikon D750 has no in-body stabilisation, relying on lens-based stabilisation. For video and handheld work, the Sony's IBIS is a practical advantage.

Verdict: Sony A7 II wins on image stabilisation.

Lens Ecosystems

The Nikon F mount has been in production since 1959 and supports decades of accumulated lenses. The used market for Nikon F glass is extensive and affordable, with many excellent vintage lenses available at low prices. The Sony E-mount is newer (2010) but has grown dramatically and now has the largest native mirrorless lens ecosystem of any manufacturer.

For buyers starting from scratch, Sony's E-mount offers more modern lenses. For existing Nikon users, the F mount offers unmatched depth of used glass at low prices.

Verdict: Sony wins for new buyers, Nikon wins for existing F-mount users.

Who Should Buy Which?

Our Verdict

For photographers who shoot primarily stills and value battery life and ergonomics, the Nikon D750 is the stronger choice — its battery life is exceptional, its optical viewfinder is a genuine advantage, and its proven reliability is well-documented.

The Sony A7 II is the right choice for photographers who prioritise compact size, in-body stabilisation, and modern mirrorless technology. At the same price point, the Sony offers more modern features, though with the trade-off of shorter battery life.

Both cameras represent exceptional value at their current used market prices (£350–£550). Either will serve you well for years of serious photography. Your choice should be driven by whether you prioritise battery life and ergonomics (Nikon) or compact size and modern features (Sony).