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Tamron 17-28mm F2.8 Di III RXD — depth of field calculator

The Tamron 17-28mm F2.8 Di III RXD is a zoom lens for the Third-Party (Various Mounts) system with a focal length of 17–28mm, a maximum aperture of f/2.8 and a minimum aperture of f/22. Below is a ready-to-use depth of field (DoF) calculator and tables for typical shooting distances, computed with the same formulas as the PhotoSim app.

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Key numbers

Depth of field table

Distances are measured from the sensor plane. Each cell shows the near and far limit of acceptable sharpness in metres (∞ = to infinity). Circle of confusion = sensor diagonal / 1500.

17 mm

ApertureHyperfocal1 m2 m3 m5 m10 m
f/2.83.60 m0.79–1.381.29–4.461.64–17.62.10–∞2.65–∞
f/42.52 m0.72–1.641.12–9.361.37–∞1.68–∞2.02–∞
f/5.61.81 m0.65–2.190.95–∞1.13–∞1.33–∞1.53–∞
f/81.27 m0.56–4.430.78–∞0.90–∞1.02–∞1.13–∞
f/110.93 m0.49–∞0.64–∞0.71–∞0.78–∞0.85–∞
f/160.64 m0.40–∞0.49–∞0.53–∞0.57–∞0.61–∞
f/220.47 m0.32–∞0.38–∞0.41–∞0.43–∞0.45–∞

20 mm

ApertureHyperfocal1 m2 m3 m5 m10 m
f/2.84.97 m0.84–1.251.43–3.321.88–7.492.50–∞3.33–∞
f/43.49 m0.78–1.391.28–4.631.62–20.62.06–∞2.59–∞
f/5.62.50 m0.72–1.651.12–9.671.37–∞1.67–∞2.00–∞
f/81.75 m0.64–2.270.94–∞1.11–∞1.30–∞1.49–∞
f/111.28 m0.57–4.260.79–∞0.90–∞1.02–∞1.14–∞
f/160.89 m0.48–∞0.62–∞0.69–∞0.76–∞0.82–∞
f/220.65 m0.40–∞0.49–∞0.54–∞0.58–∞0.61–∞

28 mm

ApertureHyperfocal1 m2 m3 m5 m10 m
f/2.89.74 m0.91–1.111.66–2.512.30–4.323.31–10.24.94–∞
f/46.82 m0.88–1.171.55–2.812.09–5.322.89–18.44.06–∞
f/5.64.88 m0.83–1.251.42–3.361.86–7.672.48–∞3.29–∞
f/83.43 m0.78–1.401.27–4.711.61–22.72.04–∞2.56–∞
f/112.50 m0.72–1.641.12–9.481.37–∞1.67–∞2.00–∞
f/161.73 m0.64–2.290.93–∞1.10–∞1.29–∞1.48–∞
f/221.26 m0.57–4.330.78–∞0.89–∞1.01–∞1.12–∞

FAQ

What is the depth of field of the Tamron 17-28mm F2.8 Di III RXD at f/2.8 and 3 m?

At 20mm, f/2.8 and focus at 3 m, acceptable sharpness runs from 1.88 to 7.49 m — about 561 cm in total.

What is the hyperfocal distance of the Tamron 17-28mm F2.8 Di III RXD?

At 20mm and f/8 on a Full Frame sensor the hyperfocal distance is about 1.75 m. Focus there and everything from 0.88 m to infinity is sharp.

How do I get more background blur with the Tamron 17-28mm F2.8 Di III RXD?

Open the aperture to f/2.8, move closer to your subject and increase the distance between subject and background, and zoom in to the long end. You can check the result in the calculator above.

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