I just purchased a canon 50mm 1.8 lens. I have noticed a few weird quirks with it.
Fiirst off it the inner lens barrel seems a lil wobbly, its not too bad but i have noticed it.
Second, I havent had any problems all day, but as I am sitting here in my house and the sun is going down, I am starting to mess around with it in low light, but sometimes when it focuses all the way out, and is fully extended, it kinda gets stuck. The AF ring moves back and forth and wont retract the lens barrel. Know it only does this when its trying to focus on something that is in pretty low light, and it starts to hunt for focus, and fully extends outwards, then it gets stuck. If I keep trying to focus on the same thing with the focus "locked" it will just kind of shimmy back and forth like its stuck and the motor cant disengage it.
If I point it at a better light source and refocus it will "unlock" itself and return to normal.
Has anyone had these problems before? I know this is a "cheapie" lens, but is this normal?
oh BTW sorry if i got some of the terminology wrong, I am kinda new to this!

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... It still works fine though!?
