As seen in Valuation Review When are comps picture perfect? [Note: Subscription] 
Call me old fashioned but we always take photos of the interior unless we are forbidden by the occupant…then we inform the client and note it in the report.
I am amazed how many times a real estate broker has mentioned to one of my staff, “You take photos? I have never seen an appraiser take photos before (as well as “You actually take measurements? I have never…”)” You get the idea 😉
The photos are more for our use – to review the property if a question comes up, to prove we were there, to protect us, etc.