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06-25-2016, 11:07 AM   #1
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Telekonverter, alternativs for k-1?

Hi, I will soon get my K-1and I love to use my sigma 120-400 on the camera. I was thinking about the possibilities of a rear tele konverter. The 1,4x pentax is a da- but seems to work with vingetting. Is there other and bryter options?

06-25-2016, 04:24 PM   #2
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These 2(ish) TCs are some of the more common 1.4x TCs that cover the FF image circle.

Kenko (?Promaster et al..) AF/Pz-AF 1.4x/1.5x Teleplus.... Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database
Tamron-F 1.4X Pz-AF MC4 Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database
06-29-2016, 05:48 PM   #3
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QuoteOriginally posted by bertwert Quote
These 2(ish) TCs are some of the more common 1.4x TCs that cover the FF image circle

I'm using the Vivitar version on my 135/400mm sigma, The Tamron is similar(the same?).


It works fine and does a great job on the DA55/300 as well.


Will be testing a Sigma AF 1.4x when it arrives soon.
07-01-2016, 05:17 PM   #4
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Are these teleconverters currently available new, or only used?

07-01-2016, 05:22 PM   #5
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Only used I believe.
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