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Canon Dioptric Adjustment lenses provide near or far-sighted users a clear viewfinder image without the use of eyeglasses. The Dioptric Adjustment lens fits into the the eyepiece holder of the camera. For all EOS cameras, except: EOS 3, A2/E, Elan 2/7 series, IX & IX Lite.
Note: Requires Rubber Frame Eb, Ec, or Ef (originally supplied with camera) depending on body.
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Comments about Canon -4 Diopter E:
Can shoot without glasses.
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Comments about Canon -4 Diopter E:
Makes using the viewfinder easier. No need to scratch or bump your glasses into the camera
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Comments about Canon -4 Diopter E:
A bit tricky to replace a diopter already inserted, but once figured out is fine.
Pros
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Comments about Canon -4 Diopter E:
I photograph without my glasses so I can see the entire viewfinder screen. This diopter allows me to see the full screen sharply and saves wear and tear on my expensive glasses. I purposely bought the diopter too strong so I could use the camera diopter adjustment to fine tune the screen sharpness for my vision.
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