What exact part needs replaced for an iPhone 5 camera malfunction?

I have an iPhone 5 that a girl dropped and I replaced everything that was broken: digitizer, LCD, microphone, ear speaker, etc. Now what is left is the camera. When I try to take a photo it will not focus on anything. No matter how close I zoom in or bring the object to the phone. Nothing looks clear, I don't even take pictures anymore cause it looks like I'm using a 2004 Nokia. Also, when I take a picture with flash, it washes the entire photo with a pink tint. Not a small flare in the corner, the entire picture. Here is a picture I took so you can see:

http://instagram.com/...JGsAiQIne/

What camera part do I need to replace? What's the exact name?

The thing with Apple… And I know this sucks… They don't like you taking apart their products so if you do… Its probably gonna corrupt the phone or something or it may just break cause they are very delicate on the inside.

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