[ypurcaro]

Originally Posted by RichardTaylor

As far as the red colour goes - What white balance setting are you using?
This may help.

Understanding White Balance

Re the aperture.
What Lens are you using?
What shooting mode are you using?

By exposure bias do you mean exposure compensation?
If then this may help.
Digital camera exposure compensation

The WB I used was Fluorescent Lamps. The lens I used was EF-S 18-55mm f/3.5-5.6 IS lens.
I used the AV shooting mode. I don't even know if that is correct.

Thank you for your help, the links are very helpful.