I use the flash a lot and often, during operation it happens to be touched somewhere (without flying from a growth height), and so the zoom motor is now buzzing but the zoom does not work. On the bzk z6, the flash works more stable if you do not use the fixing ring, which, as I found out for myself, pulls the contacts away from the shoe and sometimes the flash does not respond to the shutter button. The native 900 model has survived anything and works like a tank, and this is generally a good model if you are extremely careful with it, which is not always possible in the process of work.
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