Add Filters to Canon, Fuji, or Olympus Cameras with a Lensmate Adapter

  In 2002 I purchased a Canon G2, considered at the time to be one of the best prosumer cameras around. At the time the camera cost me around $1200AU, and as an optional extra, Canon offered a lens surround which would allow you to run filters on it.  Not only was it expensive, but [...]

Source: http://the-gadgeteer.com/2012/06/28/add-filters-to-canon-fuji-or-olympus-cameras-with-a-lensmate-adapter/

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