Excerpt: 40mm might appear to be a bit of an odd focal length for a lens, but after spending a week with Canon's first pancake lens, it makes complete sense on our crop-factor EOS
Conclusion: The Canon EF 40mm f/2.8 STM represents a bit of a debatable concept on a DSLR - at least when compared to the much smaller mirrorless camera system.
Conclusion: The Canon EF 40mm f/2.8 STM represents a bit of a debatable concept on a DSLR - at least when compared to the much smaller mirrorless camera system.
Excerpt: The Canon EF 40mm f/2.8 STM is a slim, compact pancake type lens, which is compatible with Canon EF and EF-S camera bodies and costs around £230.
Pros: Excellent sharpness, Low distortion, Compact and lightweight, Fast focusing
Cons: No full time manual focus override, Strong vignetting, More than double the price of the 50mm f/1.8 (although performance and build probably justify this)
Excerpt: Our previous Canon 40 mm review of this Canon lens on a camera with an APS-C sensor (Canon 650D) has showed that this is a versatile, compact and flat lens that combines
Pros: Small, Superior image quality of the whole image for almost all parameters., No ghosting and very little flare, Largest aperture of f/2.8 for low-light shooting, Short...
Cons: Small ring for manual focus, Not everyone will like "Focus by wire" with manual focus, Compact design: lens offers no support for holding camera, Slower aperture than ...
Summary: In terms of focal length, the Canon 40 mm pancake lens on an APS-C sensor camera is too large for a standard lens and too short for a telephoto / portrait lens.
Pros: Compact, Good quality: very high resolution, very low distortion and chromatic aberration, low vignetting.
Cons: Less common focal length for a camera with an APS-C sensor, No built-in image stabilization