Tips and
tricks: Vignetting
by Stéphane Moniotte
The term vignetting describes the dark border appearing around the
pictures when the size of the camera objective and the scope eyepiece are
not strictly compatible. This can be avoided by using the maximal zoom
offered by the camera, as shown below. For bird shooting, a simple rule:
put the zoom in 3X zoom position and leave it there forever ! Most of us
also use "Spot metering" as standard focusing choice and do not move from
there.
How to avoid vignetting: on the left, a picture taken
with the zoom at 28 mm; on the right, the same bird viewed with the zoom
at 110 mm.
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