What does your firm want to appear as and through what you need to get there (images focus)?
One option for a company/firm is to use photo banks. There are free and some paid photo banks mostly paid. Some might have different license rights and usage compared to others.
Getting a photographer through instagram or a website. Here you should focus carefully to see which photographer style matches your image. Remember to look at reviews if possible. Remember to tell them carefully what you wish for and what you want from the photos. When working with photographers you need to know ho pricing goes and what it includes this should be firmly thought out. There are three common ways, which are:
Hourly pay
ask: what photos it includes? size? time schedule? extra services price? right of firm and photographer? model contrast?
per photo price:
ask: size? digital or print? how many options? Delivery time and how? extra service price? copyright for firm? copyright for photographer? Model contracts who?
photoset price :
ask or find out: what it has in it and what price is for extra services
Brinne_ainn 