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Do super multicoated filters help Rolleiflexes


tim_drake

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A filter adds two more glass surfaces to the optical system, and therefore more reflections. It could also degrade image quality if it isn't absolutely flat. But a multicoated filter is little better than a single coated. An UV-filter is unnecessary if you aren't in an enviroment with much UV-light (at sea or at high altitudes).

 

The anti-reflection coatings are there to let more light through the glass - the light that otherwise would have been reflected and cause lower contrast. It's a misconception that coatings *filters out reflections*. An uncoated lens with a super duper multicoated filter would still be an uncoated lens. The internal reflections would still be there, and sligtly more of them because of the added filter glass.

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