Official Pentax K to Q lens adapter

Started Aug 25, 2011 | Discussions thread
steelski Senior Member • Posts: 2,555
Re: the image of KQ adaper

ogl wrote:

DA40/2.8 ~ 224 mm/f16 equiv. for FF.

FA77/1.8 ~ 430 mm/f10

FA50/1.4 ~ 280 mm/f8

hard to say that such adapter has any serious sense. just for fun IMO.

DOF wise, yeah, As you put it, but for speed wise, the F number stays the same. Although I would not want to use the 1.4 wide open.

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