It all really depends what you require the photograph for:
- Printed Publication - your image must be 300 ppi and there will of course be restrictions depending on your publication media.
- Web Publication - your image could be 72 ppi and there are really no restrictions on the dimensions but, of course, you must think of your user - which device will they be using to view the image - desktop, tablet or phone and even with a desktop the size of their monitor. Probably better to so for a safe size.
I can photograph the subject and provide the necessary editing in order to make the images ready for web publication or printed publication.