Micro 4/3 with 1600mm(35 mm equivalent focal length) Telephoto Zoom & Extra Macro lens || How make Universal Teleconverter for Micro Four Thirds
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Warning !!!
Panasonic 2x Teleconverter (DMW-TC20) official use only with H-ES200 panasonic 200mm/2.8 lens and H-ES50200 panasonic 50-200mm/2.8-4.0 lens(*on 2020 year).

Any changes or actions you take after watching this video are at your own risk. You can permanently damage equipment and device. Author of the video is not responsible for any possible or unspecified risks and caused defects.
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equipment used in video:

lens panasonic 100-400mm F4.0-6.3
lens olympus 60mm F2.8 Macro
panasonic 2.0x teleconverter (DMW-TC20)
extension tube for MFT at 16mm

camera panasonic gh5s