Stacking Pentax 1.4X Rear Converter + F 1.7X Converter

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Dale108
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Stacking Pentax 1.4X Rear Converter + F 1.7X Converter
6 months ago

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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