can i prompt for a picture from a camera

Yes, that is possible to do in Jotform. You can do so by adding the Take Photo widget to your form.

http://widgets.jotform.com/widget/take_photo 

To learn how to add a widget to your form, simply follow this guide: How to Add a Widget to your Form
Here's a demo form so you can see it in action: https://form.jotform.com/60598524530963

Do let us know if you need further assistance.