see also:

• teleconverters explained
• Fujifilm X mirrorless system

• Fuji has released the usual 1.4x and 2x teleconverters but these are only compatible with certain lenses

• https://www.fujifilm.com/products/digital_cameras/x/fujinon_lens_xf14x_tc_wr/
• 7 elements on 3 groups
• 15mm long
• 130g
• compatible lenses:
  • XF80mmF2.8 R LM OIS WR Macro
  • XF50-140mmF2.8 R LM OIS WR
  • XF100-400mmF4.5-5.6 R LM OIS WR
• $US449

• https://www.fujifilm.com/products/digital_cameras/x/fujinon_lens_xf2x_tc_wr/
• 9 elements on 5 groups
• 30.2mm long
• 170g
• compatible lenses:
  • XF80mmF2.8 R LM OIS WR Macro
  • XF50-140mmF2.8 R LM OIS WR
  • XF100-400mmF4.5-5.6 R LM OIS WR
• $US449

• https://kenrockwell.com/fuji/x-mount-lenses/14x-converter.htm