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Old 13-12-10, 03:42 PM
duncan22 duncan22 is offline
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Whats the difference ?
I Have been looking at 2 Hoya Circ Polarising filters 77mm and am unable to see the difference between the 2 filters, other than one is claiming to let more light through ?

Hoya Pro 1 CP Filter & Hoya HD CP Filter.

Amazon advertises the Pro 1 at a much higher price than the HD.........Am I missing something or is one better than the other for some reason ?
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Old 13-12-10, 04:47 PM
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Cathus Cathus is offline
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it's usually to do with the quality of the glass & the amount of light dispersal, the higher the quality the less bouncing around the light will do when it comes through the filter (causing flare). Also I think the Pro 1 CP uses tougher glass & is less prone to damage.
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Old 22-12-10, 02:32 PM
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KeithT KeithT is offline
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I think the differeces are in the coatings. Why not check out both at the Hoya web site?

http://www.hoya-online.co.uk/
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Last edited by KeithT; 22-12-10 at 02:34 PM.
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