Hello dear CS members.
I am new here and currently taking up photography since my secondary school times playing with SLR. Decided to take up photography again as I am going exchange and is a good chance for me to take down memories there.
I am currently using a 500D with a 15-85mm and is loving my camera! haha.
As I am new and still trying out. I got a question here as I don't really understand the USM system. As it is said, my lens comes with ring USM(if I am not wrong) and is able to change the focusing after pressing half-way on the shutter button.
I tried doing that by focusing on an object and changing the focus to another while half-pressing my shutter button. However the camera auto help me focus back to my initial object. Just want to confirm. I am using the function wrongly right? hahaa.
If this is not the way to use this function, what is? just curious about it. Thanks!