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02-07-2019, 02:59 PM   #1
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Use of Pentax Auto Extension Tubes


I have not had success using my set of 3 Pentax-brand auto extension tubes with my 18-55 Auto lens and Pentax K-r body. Is their use limited to manual lenses that have an aperture ring? Any advice on extension tube usage would be much appreciated.

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02-07-2019, 03:07 PM - 1 Like   #2
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The Pentax tubes do require an aperture ring, yes. You may be able to find some used third-party ones with A-type contacts, or use a de-glassed teleconverter, but Pentax never made any of their own.

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02-07-2019, 03:25 PM   #3
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Thanks, Adam.

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