For someone who is hiring a cameraman and isn't quite sure how to decipher whether a person is competent or experienced enough to capture the look, feel, and quality they desire, here are a couple things to consider when hiring a "Qualified Cameraman".
Hiring a Qualified Cameraman
Number One, if someone doesn't have an example of their work to present such as a demo reel or videos/films that can be found online, I would suggest moving on to other options because this is a red flag.
Number Two, if they don't inquire about details of the project prior to the shoot and are strictly trying to wing it, this is not a good sign. A cameraman should be there to help you, not hold you back. Make sure to discuss camera and equipment details needed for the shoot and be clear about what you need.
Number Three, if they are under quoting the project just to impress and acquire the job and you know they should be charging more, I would probably keep looking. Someone who charges the correct prices, does so for a reason. It's the cost of efficient equipment and the cost of experienced labor.
If you consider these three guidelines the next time you're attempting to hire a qualified cameraman, you should be in good shape. If the projects important, then it probably deserves the amount of time it takes to find the right candidate for the job.