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Pentax 645 Lens Attachments
The teleconverters listed on this page allow you to extend the reach of a limited number of Pentax 645 lenses.

Pentax Lens Review Database » Pentax 645 Medium Format Lenses » Pentax 645 Teleconverters and Adapters
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  Lenses Rating Average Price User Reviews
Pentax 67 Lens to Pentax 645 Body Adapter
Medium-Format Support
9.57 $140 7 reviews
Rear Converter-A 645 1.4X
Automatic ApertureMedium-Format Support
9.00 $200 2 reviews
Rear Converter-A 645 2X
Automatic ApertureMedium-Format Support
9.00 N/A 1 reviews

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