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SRB Elite Filter System - part 2 of 1 2 3

by Mike McNamee Published 01/02/2017


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 24–105mm 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.


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 25/03/2020 12:33:27

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Updated 25/03/2020 12:33:27 Last Modified: Wednesday, 25 March 2020