I've been a portrait photographer for over 20 years now and I guess my soundbite is "GO MANUAL OR GO HOME."
Most of my cameras are older than I am and hail from ye olden thymes when people used real film and there were many more Es in words. I use natural light and aside from cropping - while I am proficient in photoshop - I don't edit my images. What you see is what was actually taken.
Having been a starving actor in the past, I'll do your headshots more cheaply than just about anyone, and they'll be GOOD too. I can and have done many landscapes and weddings and events and commercial print work, but my true love is "Art Portraiture."