LensTip.com

Lens review

Canon EF 16-35 mm f/4L IS USM

22 July 2014
Arkadiusz Olech

5. Chromatic and spherical aberration

Chromatic aberration

The crops, shown below, prove that the tested lens doesn’t have any problems when it comes to the longitudinal chromatic aberration.

Canon EF 16-35 mm f/4L IS USM - Chromatic and spherical aberration


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The lateral chromatic aberration correction can be described in similar terms – the graphs we get at particular focal lengths, respectively on the edge of the APS-C sensor and on the edge of full frame, are presented below.

Canon EF 16-35 mm f/4L IS USM - Chromatic and spherical aberration

Canon EF 16-35 mm f/4L IS USM - Chromatic and spherical aberration


At shorter focal lengths the aberration level reaches 0.06-0.08% so you deal here with low values, only momentarily approaching medium. At the maximum focal length the aberration is practically imperceptible – a round of applause!

Canon EF 16-35 mm f/4L IS USM - Chromatic and spherical aberration



Spherical aberration

The first photo in this chapter shows that the lens has no ‘focus shift’ effect. The appearance of defocused light circles in front of and behind the focal point is more or less similar. Both these facts might suggest that the lens deals with the spherical aberration correction rather well.

Canon EF 16-35 mm f/4L IS USM - Chromatic and spherical aberration