Should I upgrade from the Sony Alpha A7 III to the Sony Alpha A7 IV?
Upgrading is worth it if those changes matter to your photography. Both use the Sony E / FE mount, so your lenses fit directly.
What you gain
- 33MP instead of 24MP
- 3 years of newer processing and autofocus (2018 → 2021)
What you give up
- noisier high ISO
What it costs
| Alpha A7 IV new | £1,799 |
| Alpha A7 IV used (MPB, typical) | £1,150 |
| Your Alpha A7 III trade-in (rough estimate) | ≈ £400 |
| Net cost buying used | ≈ £750 |
Trade-in estimates assume about two-thirds of the typical MPB resale price; real offers vary with condition and shutter count.
Specs side by side
Sony Alpha A7 III specs · Sony Alpha A7 IV specs · full comparison · best lenses for the Alpha A7 IV
Other upgrade paths
Frequently asked questions
Should I upgrade from the Sony Alpha A7 III to the Sony Alpha A7 IV?
The upgrade is worth it if those changes matter to your photography. You gain 33MP instead of 24MP, 3 years of newer processing and autofocus (2018 → 2021), but you lose noisier high ISO.
How much does it cost to upgrade from the Alpha A7 III to the Alpha A7 IV?
The Alpha A7 IV costs £1,799 new and about £1,150 used at MPB. Trading in a used Alpha A7 III might bring roughly £400, so the net cost is around £750 buying used (a rough estimate: get quotes from MPB, Wex and Park Cameras).
Will my Alpha A7 III lenses work on the Alpha A7 IV?
Both use the Sony E / FE mount, so your lenses fit directly.