1.7x AFA question for Brandrx

Started Jan 8, 2014 | Questions thread
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1.7x AFA question for Brandrx
Jan 8, 2014


My "new" Pentax 1.7x AFA arrived today.  DA* 300/4 shows reports maximum aperture of f6.7 on the K20D.  Is that correct, 2 stops?

Of course it's finally raining here so no pictures yet.


 Sinnettc's gear list:Sinnettc's gear list
Pentax K20D Pentax Q10 Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA* 50-135mm F2.8 ED (IF) SDM Pentax smc DA* 300mm F4.0 ED (IF) SDM +2 more
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Pentax K20D
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