Andy Westlake investigates the latest addition to Sigma’s ‘Art’ line of high-quality fast primes

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Sigma 24mm f/1.4 DG HSM | A

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Sigma 24mm f/1.4 DG HSM | A review

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£799.00

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Sigma 24mm f/1.4 DG HSM | A review – Curvilinear distortion

Our charts reveal that Sigma has done a good job of controlling distortion, with just a low level of barrel distortion visible. In general, we expect low distortion from primes – it’s one good reason to choose them over zooms – but it usually comes with a greater trade-off against corner sharpness.

The chart below represents the lens’s distortion. The arrows indicate the direction in which grid points are distorted from their ideal position, and the relative magnitude of their displacement. The grid itself illustrates a small amount of barrel distortion, with a little re-correction into the corners.

Sigma 24mm f/1.4 DG HSM | Art distortion

Sigma 24mm f/1.4 DG HSM | Art distortion chart. SMIA TV=0.7%

This real-world example shows just how little distortion is visible in normal use. The lines towards the lower edge of the frame are kept impressively straight.

Sigma 24mm f/1.4 distortion

This real world example illustrates the Sigma 24mm f/1.4’s low level of distortion

  1. 1. Sigma 24mm f/1.4 DG HSM | A review – Introduction
  2. 2. Sigma 24mm f/1.4 DG HSM | A review – Features
  3. 3. Sigma 24mm f/1.4 DG HSM  | A review – Build and handling
  4. 4. Sigma 24mm f/1.4 DG HSM | A review – Image quality
  5. 5. Sigma 24mm f/1.4 DG HSM | A review – Resolution
  6. 6. Sigma 24mm f/1.4 DG HSM | A review – Shading
  7. 7. Sigma 24mm f/1.4 DG HSM | A review – Curvilinear distortion
  8. 8. Sigma 24mm f/1.4 DG HSM | A review – Our verdict
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