Use the photos not only for your website. A consistent and professional external presentation of the company or the associated employees in social media such as LinkedIn, Twitter, Xing ... is at least as important.

Uniform and expressive photos make employees feel more connected to the company. This also has an effect on motivation and willingness to perform.
Prospective customers for your goods or for your company immediately have a professional appearance and a "face" to a contact address.

This is very important for every customer who attaches great importance to quality and service.