Conclusion

The 40mm f1.2 Nokton Aspherical is another sharp, well-built and compact standard prime lens from Voigtlander that offers an addictively fast, if somewhat tricky to use, maximum aperture of f/1.2. Combined with the 10-blade aperture and a 35mm full-frame Sony camera, with a certain amount of patience it's possible to create some beautiful bokeh effects. The manual focusing experience is once again top-class and the clicked/de-clicked aperture ring is a great touch.

The main fly in the ointment is very obvious purple-fringing when shooting wide-open, which can either be avoided by stopping-down by one stop, or be corrected in post-processing. Shooting wide-open at the maximum f/1.2 aperture shows some reduction in sharpness in the centre of the frame, with peak performance between f/2-f/11, while sharpness isn't quite as good at the edges. Otherwise, there's lots to like and little to loathe about this very reasonably priced optic.

In summary, the Voigtlander 40mm f1.2 Nokton Aspherical offers a compelling bland of compact size, excellent image quality and sheer speed, all at a pleasingly wallet-friendly price.

Ratings (out of 5)
Design	5
Features	5
Ease-of-use	4.5
Image quality	4.5
Value for money	4.5