With a maximum aperture of f/1.4 Leica’s new 28mm Summilux for the M system offers that magic combination of wide angles and shallow depth of field. Damien Demolder tests it

Product Overview

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Leica Summilux-M 28mm f/1.4 ASPH review

Product:

Leica Summilux-M 28mm f/1.4 ASPH review – a magic combo of wide angle and shallow focus

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Leica Summilux-M 28mm f/1.4 ASPH review: Resolution, shading and curvilinear distortion

Resolution

The difference between edge and centre sharpness begins to close from f/4 and becomes very good at the lens’ optimal aperture of f/5.6. From f/5.6 to f/11 general resolution is excellent, though f/11 is less able for fine detail – and f/16 much less so. Wider apertures create softness around frame edges which is pleasant if anticipated and used well.

Leica-Summilux-M-28mm-f1.4-ASPH-review-MTF

Shading

This lens demonstrates the principle that wide apertures and wide angles of view are prone to corner shading. Wide open shading is dramatic, and remains a fading feature through all aperture settings. The worst is gone by f/5.6, but is present even at f/16. Some may relish the drama of the f/1.4 shading and that it directs attention to the centre of the frame.

Leica Summilux M 28mm f/1.4 ASPH review - Vignetting

Curvilinear distortion

Some curvilinear distortion is to be expected with 
a lens this wide, and Leica isn’t entirely immune to its effects. However, the degree of distortion this lens produces is very slight, to the point that it can’t readily be detected in most pictures. What does appear can be easily corrected. It’s very good.

Leica Summilux M 28mm f/1.4 ASPH review - Distortion

  1. 1. Leica Summilux-M 28mm f/1.4 ASPH review - Introduction
  2. 2. Leica Summilux-M 28mm f/1.4 ASPH review: Features
  3. 3. Leica Summilux-M 28mm f/1.4 ASPH review: Build and handling
  4. 4. Leica Summilux-M 28mm f/1.4 ASPH review: Image quality
  5. 5. Leica Summilux-M 28mm f/1.4 ASPH review: Resolution, shading and curvilinear distortion
  6. 6. Leica Summilux-M 28mm f/1.4 ASPH review: Verdict
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