Hi, friends! I've recently been shooting more portraits, trying to get experience in that arena. My problem is that the two lenses I own (I think they are the EF-S 18-55mm f/3.5-5.6 IS Lens and Canon EF-S 55-250mm f/4.0-5.6 IS Telephoto Zoom Lens) that came in the package deal when I bought my camera (Canon EOS Rebel T2i) several years ago do not go below about f/5.0. Do I have the wrong settings that are preventing it from going any lower? I see that the aforementioned description states that they do, but I have not been able to achieve that. I've been reading that the best f-stop for portraits is 2.5ish. So what lens do I need to invest in for portrait photography that will enable me to accomplish the desired settings? Any help you guys could be provided would be much appreciated, as always!