Canon EF 35 mm f/2 IS USM
5. Chromatic and spherical aberration
Chromatic aberration
In the case of the Canon EF 35 mm f/2 IS USM the longitudinal chromatic aberration doesn’t cause any problems – it can be noticed clearly in these crops from photos shot by f/2.0 and f/2.8.
 |
Please Support UsIf you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The lateral chromatic aberration performance is very similar to that of the lens’s predecessor but the values are by about 0.01-0.02% lower. Here the tested device can be only praised because even the highest results (hovering near 0.08%) still should be considered low. On the other hand we can remind here the result of the Sigma A 35 mm f/1.4 DG HSM, tested by us not so long ago - its maximum values never exceeded 0.06%.
 |
Spherical aberration
The spherical aberration is not corrected in a perfect way and you can notice it by looking at the photos below. The circle of light obtained after defocusing the point-like image of a diode looks different in front of the focus (lighter centre, darker edges) and behind the focus (definitely more even light spread).
Still the level of this aberration is not huge and it doesn’t make itself felt in a form of a ‘focus shift’ as the first photo, presented in this chapter, shows.
