Stacking Pentax 1.4X Rear Converter + F 1.7X Converter

Started Jun 24, 2014 | Discussions thread
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Dale108
Dale108 Veteran Member • Posts: 6,310
Stacking Pentax 1.4X Rear Converter + F 1.7X Converter

I tried this combo with the K3 and DA 300 today to see what is would do.  This combo creates an effective focal length of 710mm.  Does it work?  Well, since the F 1.7X converter allows only centre point AF, it only can AF in good light.  However, it worked better than I expected so it is worthwhile to continue some experiments.  An example shot from today of a goldeneye.

Dale

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