Why do cameras lose focus on certain objects? Can current technology make it so that losing focus is no longer a thing?
In: Physics
Can you give us a particular scenario you’re thinking of and what kind of camera you’re referring to?
Camera loses focus because the person operating the camera tell it to focus on something on some parts of the frame. So, when the subject moves out of the part of the focus area then the camera will change its focus to something behind where the subject used to be and the subject goes out of focus.
To avoid that most cameras now have object tracking and it will continuously adjust focus to keep the subject from going out focus.
The new mirrorless cameras now has something called Eye-Focus, i.e. it will track a person’s eye and once the camera locks its focus to his/her eye, then the person can move anywhere in the frame, left-right, come forward, go backwards etc and the camera will continuously adjust focus to keep the subject in focus. Of course, this only works if the subject you’re shooting is a person.
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