go to Samy's tomorrow(41 E. Walnut Ave, Pasadena, CA) right between Fair Oaks and Raymond(assuming you've been there before. Talk to KEN DETHLOFF or Alyssa Pfaff Tell them I sent you(tell them my name, I used to work there at the film counter until the beginning of this year).
They should be able to get you what you need, both are extremely knowledgeable on the subject, since Ken is the head of the pro dept, and Alyssa is a great girl to deal with behind the counter.
they get there at 9am(pro dept. opens at 9 at the Pasadena store, whole store opens at 8am). just be aware, after christmas sale starts tomorrow, so get there at 9 sharp!
I'm telling you this because I worked there! and you don't want to be there with 100's of others waiting in line, not a nice buying/info-getting place to be at that time.
the pro dept is in the waaay back of the store.