Shallowest DOF: Nokton 17.5mm f/0.95 or 35mm f/1.4 on full frame?

Started Feb 5, 2013 | Discussions thread
Chez Wimpy
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In reply to paultakeda, Feb 6, 2013

paultakeda wrote:

When all you want is 1mm in perceivable focus, these days you can't beat medium format.

As far as I am aware, there is no 135 35/1.4 "equivalent" on 645.  It would take a 55mm f2.2 to match it for DOF control, but f2.0 or faster to beat it - and that is assuming "FF 645", not the crop digital formats.  Has there ever been such a beast?  In fact, across the line, outside of a few outliers (FE and supertelephoto) I can't find any instances where 645 has the upper hand.

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-CW

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