Canon EF 40mm f/2.8 STM Review
Mac users, we're pleased to announce Macphun's all-in-one photo editor Luminar is now available for just $69£52 for new users, or $59£44 for existing Macphun users.
We rated Luminar as "Highly Recommended", and you can now visit the Luminar web site to try it for free.
Sharpness at 40mm
The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The Canon EF 40mm f/2.8 STM lens was attached to a Canon EOS 700D body, which in turn was mounted on a sturdy tripod. Self-timer mode was activated. Slight tonal changes are due to slight changes in natural light during the session.
The full frame at 40mm
Centre sharpness remains high through from f4 to f/11, with f/16 and f/22 being adversely affected by diffraction. The edges aren't nearly as sharp as the centre, with f/5.6 to f/11 producing the sharpest results.
|Aperture||Centre Crop||Edge Crop|