I work for an IT firm that deals with a myriad of technology issues, one of which is web design. A customer had contracted us to build a website for them and also wanted pictures taken for the website. While I would not call myself a professional photographer by any means, I have done some small time photography shoots for friends, etc. Since I was the person with the most photography experience and the customer had seen some of my work before, they wanted me to take the pictures. I was paid by my employer my regular hourly rate to do this job. The customer was given a flat fee for the total design of the website (pictures included). So to try and wrap this up before I write a book, the customer has now come back and wants some of the original pictures to use in ads and brochures for the company. Do I still legally own these pictures and should I charge them or license them out for this usage, since I originally took the pictures for usage on the website? Any advice would be greatly appreciated since this is a bit of a murky area for me.