No Pants Day #4 - Sony A7r + Voigtlander 21/1.8 Ultron

A few months ago I wanted to pick up a fast wide angle lens for my Sony A7r.  My main super wide angle is the Canon 17mm TS-E but not only is it not something I want to carry around for cost and size reasons, it's an f/4 lens and wasn't fast enough.

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