Depth of Field Calculator for the Sony A7 III
Depth of field is the range of distances in a scene that appears acceptably sharp in front of and behind the focus point. This page computes it for the Sony A7 III using the exact dimensions of its 36×24 mm sensor — no generic presets.
🎯 Open the interactive calculator with this camera →
Sony A7 III key specs: 24 MP · 1.00× crop factor · 6.00 µm pixels · CoC 0.029 mm (standard diagonal ÷ 1500). The values below assume focus at 5 m.
Near limit – far limit at 5 m focus
| Focal length | f/1.8 | f/2.8 | f/4 | f/8 | Hyperfocal @ f/8 |
|---|---|---|---|---|---|
| 16 mm | 2.47 m – ∞ | 1.59 m – ∞ | 1.12 m – ∞ | 563 mm – ∞ | 1.13 m |
| 24 mm | 3.45 m – 9.05 m | 2.95 m – 16.4 m | 2.51 m – 622.3 m | 1.26 m – ∞ | 2.52 m |
| 35 mm | 4.13 m – 6.33 m | 3.77 m – 7.42 m | 3.41 m – 9.36 m | 2.59 m – 70.6 m | 5.34 m |
| 50 mm | 4.53 m – 5.57 m | 4.31 m – 5.95 m | 4.07 m – 6.48 m | 3.44 m – 9.17 m | 10.9 m |
| 85 mm | 4.83 m – 5.18 m | 4.74 m – 5.29 m | 4.64 m – 5.43 m | 4.32 m – 5.93 m | 31.4 m |
| 135 mm | 4.93 m – 5.07 m | 4.89 m – 5.11 m | 4.85 m – 5.16 m | 4.71 m – 5.33 m | 79.1 m |
| 200 mm | 4.97 m – 5.03 m | 4.95 m – 5.05 m | 4.93 m – 5.07 m | 4.87 m – 5.14 m | 173.5 m |
How to use this page
Find your lens and aperture, read the near–far range, and either compose within it or click the button to open the interactive calculator and drag the focus distance live. Landscape shooters should look at the hyperfocal column: set the lens to that distance and everything from half of it to infinity is sharp. For a full explanation of the formula and the circle-of-confusion convention, see the circle of confusion guide.
Other Sony cameras
DoF for Sony A1 II
Near/far limits and hyperfocal for the Sony A1 II.
Open →DoF for Sony A7R V
Near/far limits and hyperfocal for the Sony A7R V.
Open →DoF for Sony A7 IV
Near/far limits and hyperfocal for the Sony A7 IV.
Open →Frequently asked questions
What is the circle of confusion for the Sony A7 III?
0.029 mm — the standard sensor diagonal ÷ 1500 convention, applied to the Sony A7 III's exact sensor.
What is the hyperfocal distance for a 50 mm lens on the Sony A7 III?
About 10.9 m at f/8 — focus there and everything from 5.44 m to infinity is acceptably sharp.
Does the Sony A7 III have a crop factor?
1.00× — a 50 mm lens frames like a 50 mm lens on full frame. See the crop factor guide.