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Julio Mulero | all galleries >> others >> Camera Gear >> Canon 400mm f/4 DO, 400mm f/5.6 and 100-400mm f/4.5-5.6 lens review (2009) > Fig 8. Aperture test for Canon EF 100-400mm f/4.5-5.6 L IS USM lens
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Fig 8.  Aperture test for Canon  EF 100-400mm f/4.5-5.6 L IS USM lens
16-AUG-2009

Fig 8. Aperture test for Canon EF 100-400mm f/4.5-5.6 L IS USM lens

The aperture tests were performed with the lens mounted on a tripod and with cable release to minimize vibrations and the lens set at a 400mm focal length.


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Julio Mulero08-Jan-2010 17:03
Thank you for the observation. I have updated the description to read that the lens was set at a 400mm focal length. The 2010 review has a comparison with a focal length set at 300mm and compared to the 300mm f2.8 lens.
Cesar Fernandez08-Jan-2010 05:44
It appears sharper at f8 compared to f5.6, as expected, I am curious at what focal length did you take this pictures?
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