Home » Insights » Canon Extender EF 1.4x III & Extender EF 2x III

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Matt (unregistered) wrote on
11/22/2010 - 07:57.

how many stops of light will you lose by having one of these attached - I shoot primarily with 1.2's and 1.4's so am concerned about losing too much by attaching this, but would love the extra reach on an 85 1.2 per say.  Any idea what the difference would be in terms of loss?

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