Canon EF-S 18-135mm f3.5-5.6 IS STM Teleconverter This helicoid extension tube lets

This helicoid extension tube lets you seamlessly adjust magnification for close-up work with your Pentax 67 and nearly any Pentax 67 lens (not included)

and versatile

but remember: uncoupled means that you determine focus distance and then set it on the lens

Tamron-F 2x PZ-AF BBAR MC7 teleconverter for Pentax K mount cameras and lenses

Is it especially punk

Canon EF-S 18-135mm f3.5-5.6 IS STM Teleconverter This helicoid extension tube letsThe Canon EF S 18 135mm f3. 5 5. 6 IS STM is a high quality kit lens for EF S mount digital SLR cameras. It offers a flexible range of focal lengths from wide angle to mid tele, and its optical stabilizer eases handheld usage in difficult lighting conditions. STM autofocus is fast and very quiet. Clean glass, good function.