Consider a normal photographer. There should be some studios in downtowns etc. where you could talk to the photographer.
If you are good at photography, yourself could take digital photos, print and cut them in the size require.
But you have to be good at maintaining the focus, lighting and distance from which to take the picture. I struggled too.
but some ppl seems to be having objections about digital pictures. I am not sure what they meant. These days everyone is using digital camera and not the old fashioned rolls. As long as you dont' edit the picture to change background or mask something, you should be ok.