I have the Nikon D7200, and I am really trying to capture the beautiful light flares or sunset colors in my portraits. I have the cheat sheets from my old camera, and thought I would try a couple different settings, but I'm still getting too bright and not sharp or sharper, but dark. Also lacks the colors from the sunset or the pretty sky or even the bokeh from the sun flares. What should I do? Should I use manual or aperture, and what should I try doing that I'm not?