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SRB Elite Filter System - part 2 of 1 2 3

by Mike McNamee Published 01/02/2017

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The engineering of the system is excellent, solid anodised aluminium for the frame with a nicely sprung, brass sprocket to allow the unit to be dismounted from the adaptor ring attached to the lens.

Optical Testing

The filter is a circular polariser (if you look through it at a mirror it is black!). We set it up on a 24105mm f4 Nikkor zoom lens. Vignetting occurred at 24mm and the effect was made worse stopping down, which sharpened the edge of the intrusion into the field of view.


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Depending upon the subject this may be more, or less important, Photoshop could repair many types of 'damage'. The effect was detectable for 7% into the horizontal and 20% down from the top. This is a significant loss of area. The effect was tightened up to 5% and 14% at f16. No vignetting was detectable at the 105mm end of the zoom.


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1st Published 01/02/2017
last update 30/01/2018 12:09:37

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Updated 30/01/2018 12:09:37 Last Modified: Tuesday, 30 January 2018