The TC debate is never over ... (Ron?)

Started Apr 16, 2012 | Discussions thread
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Kerusker
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The TC debate is never over ... (Ron?)
Apr 16, 2012

still thinking about how to improve my Sigma X1.4 TC or to find a good TC for my DA 55-300 (yes!).

Ron, could you do me a favor?

I did not check it but I think you own the Pentax 1.7X AF Adapter and a 35 film body which can drive it. Could you please mount the 1.7X AF Adapter only and observe how the 1.7X lens is moving at the front and at the backside (camera back open). Is the front lens and the rear lens moving by the same amount (distance)?

I don't understand how the Pentax 1.7 AF Adapter can change focus (of the combo) and I can't get the FF fixed with my Sigma X1.4 TC by moving the TC's optical element.

Thanks

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][.Kerusker
we don't see that we don't see (eye's blind spot)

 Kerusker's gear list:Kerusker's gear list
Pentax K-5 II Pentax K-5 Pentax smc DA 15mm F4 ED AL Limited Pentax smc DA* 16-50mm F2.8 ED AL (IF) SDM Pentax smc DA 55-300mm F4.0-5.8 ED
Leica X1
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