V08   2022/3/29
1. Improved 7M4 phase detection auto focus compatibility
2. Other optimizations

V07   2021/12/14
1.Improving compatibility.
2.Adding more lens compatibility.


V06_beta6  2021/3/6
1.Improving compatibility.
2.Adding more lens compatibility.

V06   2020/11/06
1.Improve the stability of individual cameras.


V05   2020/08/21
1.Adding more lens compatibility.

yn_ef2fe_r05T17N_beta3  2020/03/31
1.Adding more lens compatibility.
2.Improved aperture stability.

yn_ef2fe_r05T17K_beta  2019/10/24
1. Improving compatibility.
2. Adding more lens compatibility.


yn_ef2fe_r05T17I_beta  2019/09/12
1. Improving compatibility.
2. Adding more lens compatibility.


V04  2019-05-20
1. Added the Fn custom function settings.
You can use the camera's [Focus Hold button] custom settings menu to set the Fn custom function of the adapter ring. After saving the settings, you can use it. This function requires the camera to support using the [Focus Hold Button] to customize the settings. For details, please refer to the camera manual.
Properly setting the FN custom buttons can reduce operations and increase efficiency.
2. Improved the lenses compatibility. 
3. Optimized the focus performance.

V03  2019/04/30
1. Improved the lenses compatibility. 
2. Optimized the focus performance.

V02   2019/04/13
1.Improve communication stability.