Release notes archive for EF-X

Firmware History (Archive) for Canon EF - Fujiflim X-mount Smart Adapter/ Speed Booster^TM

• Name: Firmware update V1.50 (#1695) for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Release date: 23 January 2025
• Benefits and improvements: 
  • Add support for Canon CN10x25 CINE-SERVO lens (25-250mm with built-in teleconverter). Please be advised that an external DC power source must be connected to the lens. Please turn off the camera before engaging or disengaging the built-in 1.5x teleconverter. 
  • Fixed issue with F-stop being displayed for Canon Cinema EOS CN-E 18-80mm T4.4 L IS KAS S lens despite "Use cinema lens" option is enabled in Metabones App and T stop display is chosen on camera.
  • New Metabones App option to choose between optical image stabilization (IS/OS/VC) and in-body image stabilization (IBIS).
  • Fixed a rare issue where autofocus may be disabled.
  • Fixed defects associated with the use of cinema lenses such as Sigma 18-35mm T2 CINE.
  • Improved AF accuracy with some older lenses.
  • Fixed a rare crash during AF-C shooting.
  • Fixed issue with optical image stabilization (IS, OS or VC) not effective in movie mode on X-H2 and X-H2s.
  • Fixed black images when electronic front shutter curtain is used with X-H2s and Canon EF70-200mm f/2.8L IS II USM lens.

• Name: Firmware update V1.40 (#897) for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Release date: 11 November 2022
• Benefits and improvements: 
  • Fixed issue of LED indicator glowing bright red on X-T100 when turned on until the shutter release button is pressed halfway
  • Fixed defects associated with the use of optical image stabilization lenses 
  • Add support for X-H2 and X-H2s
  • AF-S autofocus improvement

• Name: Firmware update V1.30 (#609) for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Release date: 07 January 2022
• Benefits and improvements: 
  • Fixed: "Park focus when camera is turned off" option in Metabones App is ignored.
  • Fixed compatibility issue with Tamron SP 35mm f/1.4 Di USD (Model F045).
  • Fixed VC with Tamron 18-270/3.5-6.3 VC (B003), Tamron 28-200/3.5-6.3 VC (A20) and Tamron 17-50/2.8 VC (B005) (Both the VC switch on the lens and the IS MODE setting on the camera need to be ON)

• Name: Firmware update V1.20 (#466) for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Release date: 05 August 2021
• Benefits and improvements: 
  • IBIS now works with any lens including long telephotos and high-ratio zooms.
  • Fixed: with some Canon TS-E lenses, aperture cannot return to wide-open after metering.
  • Fixed: chromatic aberration correction is sometimes not completely turned off for some zoom lenses.
  • Add support for Laowa 100mm f/2.8 Micro.
  • Fixed: when the AF/MF switches of certain Sigma lenses are set to the MF position, focus distance should not move when the camera is turned on.
  • Fixed issue where the IS/OS/VC ON/OFF switches of some OIS lenses do not change IS MODE of the camera.
  • Fixed lens firmware version in EXIF lens name.
  • After connecting USB the LED will shine a bright pink glow to request the user to run Metabones App.

• Name: Firmware update V1.10 for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Release date: 01 Sept 2020
• Benefits and improvements: 
  • IBIS now works with any lens including long telephotos and high-ratio zooms.
  • Fujifilm XF teleconverters now supported with X-T4.
  • Slow down hunting when XF teleconverter is used to increase the chance of getting a lock.
  • Support iris display in T-stops with cinema lenses. (The cinema lens has to support electronically transmitting iris position.)

• Name: Firmware update V1.00 for EF-X T Speed Booster® ULTRA 0.71x/ Smart Adapter^TM
• Initial date: 05 June 2020