DOF 14-35mm in relation tot 12-60mm

Started Apr 22, 2013 | Discussions thread
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archeogeolab
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DOF 14-35mm in relation tot 12-60mm
Apr 22, 2013

Shooting from exact the same place with the same FOV (for instance 15mm), the same APERTURE, while using MF, the difference between these two zooms is apparant.
When MF-focussing on a distant object (400m away) the objects on the foreground are definitely sharper on the 12-60mm zoom than on the 14-35mm zoom (on the 14-35mm zoom the foreground is far more out of focus, showing bokeh).

On the other hand, when focussing on the foreground (at 2 meter distance), the 12-60mm zoom definitely shows more out of focus bokeh in the distance than the 14-35mm zoom.

Does somebody know the reason for this behaviour? I expected the same aperture values should give the same depth of field characteristics.

Thanks in advance, Erik

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