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06-01-2016, 01:52 AM   #1
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Join Date: Sep 2014
Location: Zurich area
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Sigma 4.5/500 - TC experiences


This is to all the fellow Pentax users of Sigma's f4.5/500mm AF EX DG APO lens: I wonder about your experiences with TCs, mainly in the 1.4x area.
Which TC do you use or did you test and what are your take aways?

Thank you from Switzerland,

06-01-2016, 04:10 AM   #2
RockvilleBob's Avatar

Join Date: Dec 2011
Location: Lewes DE USA
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I've experienced good results and have posted some pictures on the Pentax 1.4 TC Thread
The thread is not that long so you can find some fairly easy
Here's one that I posted on this page in early morning light
06-01-2016, 05:49 AM   #3
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I have used Sigma 500/4.5 with 1.5 TC from Promaster (Kenko). The image quality was very poor. So now shooting without TC. 500 mm is more than enough for my need. Actually the same TC was really great combo with tonika 400/5.6 SD for some reasons.
Camera Pentax K-5.

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