Sometimes providers list the activity on their websites; sometimes they don't.  Is there a general way to ask whether she would pose for pictures or allow filming without offending the provider?  

I asked in an email once and the provider stopped responding to all my emails.  Should I ask when I'm in the room with her?

If you are gonna film the session, try getting someone who is a pornstar or at least offers PSE. I don't know man apparently some providers get really thrown off with dudes even asking about it.

But I know exactly what you mean.

if you ask in the room lol. Just ask "DO you allow video keepsakes" or some bs over email, but if you don't see it listed odds are the answer is no, or only with a serious upcharge. If a girl does not show her face, she is not going to let you tape her. Your best bet is to just get a porn star.

just be prepared for the extra compensation. Try looking for a provider who specializes in PSE. You might have more of a chance there.  For discretion reason most do not offer it however.

Simply say to the paid escort: "Do you allow camera work?"

I've seen people post on the local boards, "ISO looking for a girl that likes vvideo or photography". They respond accordingly.

EOM

I have been a part time provider for years..I have caught three clients videotaping me with-out my consent!! You better ask if she would be willing to participate in that interest. I contacted my attorney and I plan on pressing complaints against these two remaining clients. That is the worse violation known to this business...How would you like your family,friends and co-worker's to know you pay for sex? Then on top of it you have the "slimy pedophile nature" to capture sexual relations on live stream or disk? This business was suppose to be about staying safe from Vice cops arresting one of us,pimps trying to hi-jack our business and or rapist,robber's,serial killer's. Buddy if any of you guys have done this and bragged to your self "I got away with videotaping a whore". Watch out because we are willing to fight back. A SEARS employee is in jail now for videotaping female customer's in the dressing room and bath room. He did this for 3years and other perverts are being thrown into jail for this shady b.s. If you feel an inner need to watch your self in sexual graphic images. Then audition for an adult film therefore you can become an whore yourself. Because most of the guys who do porn in locally in l.a are really nothing to write home about. Don't ever think that an escort won't press charges because you both can fight it out in front of a judge. Ladies you better be careful when doing Incall,  guys have hidden camera's as well. I think anyone doing this must register as a "sex offender" if charged. Violation of a person's privacy....

We do not want that crap out there for our family,future husbands and employer's to find out about. Look what happened to Erin Andrews with her stalker his but is in jail. That footage will always be on the net as long as Pamela Anderson-Lee and Tommy Lee's honeymoon footage will. You are only opening yourself to being flagged. Sex is suppose to be private..not public!

It was all about how do I ask if she allows filming/photography; not how to secretly do it.

He was asking how best to ask. If BOTH parties are amicable to being filmed, there is nothing wrong with it. I have film of me and my wife and so does she. We both knew the camera was rolling and there was nothing wrong with it.

Now to answer the OP after a session just ask if it would be OK to film the session next time. Odds are she will say no, and even if she don't plan on paying more.