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I have a camera lens which I want to control by arduino (like this https://vi.aliexpress.com/item/1005004141070063.html)

I have an info about wires description but I can't understand what focus A+, A-, B+, B- means? I guess I need to send PWM pulses to A and B wires to move focus in straigt and opposite direction but I can't understand what + and - means. Is it just signal and ground?

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It looks like you will be dealing with bipolar stepper motors. Most likely, A+ and A− are connected to one coil, whereas B+ and B− are connected to the other coil.

See the Arduino documentation: Arduino and Stepper Motor Configurations for instructions on driving this kind of motor.

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