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Lens review

2010-05-01
 

Canon EF 24-105 mm f/4L IS USM

8. Vignetting

When you join a full frame design and a smaller APS-C sensor camera you can get very good vignetting results. In the 24-70 mm range and at maximum focal length the brightness loss in the frame corner is always 10% (-0.31 aperture value) and on stopping down to f/5.6 it decreases to an imperceptible level of 5-7%.

Canon EF 24-105 mm f/4L IS USM - Vignetting



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The highest vignetting can be observed at 105 mm because there, by f/4.0, the light fall-off in the corners amounts to 14% (-0.44 EV), which is also a good result in and of itself. Applying f/5.6 aperture eliminates the problem practically completely (4%).

Canon EF 24-105 mm f/4L IS USM - Vignetting

Canon EF 24-105 mm f/4L IS USM - Vignetting

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