I want to ask you how Sony A330 locks the focus and exposure. Which gear is better for general shooting, focusing mode and metering mode?

To lock the focus, please press the shutter. When you hear the focus tone and the prompt of the eyepiece /liveview screen, the focus is successful. Don't release the shutter at this time, it will be locked.

Lock-in exposure is to measure the light of the subject in a complex environment and get the exposure value.

At close range, the camera will remember the correct exposure value by measuring the light of the object and holding down the AEL key.

In fact, in the a/s mode, the choice of metering mode mainly depends on the environment, and the general surface metering is enough. However, the camera is still not smart enough. When it is complicated, there will be more or less deviations. Still take more photos, think more, accumulate more experience, and try to use M files as much as possible.

Focusing is automatic and manual. Sony's autofocus is at 9 o'clock, which can be set with the five-dimensional navigation key at the back. Yes, the focus is the point that flashes red after focusing.