I have a Canon mini DV camcorder and am wondering, I am a noob so please bare with me on this. I have a Canon HV20 and inside the lens there is a black thing that closes and opens depending upon if the camera is in recording mode off etc. This black thing stopped closing and is totally open now, the camera records but my question is, what is the name of the part I am talking about and what is it's full purpose? I am just wondering if this staying open is going to cause any issues with anything such as different lighting situations or is this simply something that does not matter? Sorry for being such a noob to this stuff but I simply have no clue if this part being open all the time will cause any issues. Any help is greatly appreciated. I also have a great sense of humor so feel free to razz me about being so uneducated on cameras
Thanks again.

