My copy from TK Foto was v1.0 firmware (bought this april) and I experienced issues with this lens on custom WB as well as screen turned black after changing lens. Not sure if I used a 20/1.7 previously prior to changing.
I updated the firmware to v1.1 the issue of custom WB does not exist while the issue of the blackout cannot be replicated earlier as I tried to help the TS.
Hope this info is useful to anyone.
I updated the firmware to v1.1 the issue of custom WB does not exist while the issue of the blackout cannot be replicated earlier as I tried to help the TS.
Hope this info is useful to anyone.