Q: Marking and dating the backs of photos is difficult with regular ballpoint ink and stamp-pad ink because they both smudge off. Is there a type of pen or ink for stamp pads that will penetrate the backs of photos and not damage them? A: Yes, there are a number of types of pens and pencils that will mark on even resin-coated papers. The Stanford "Sharpie" pen, or the fine-point Pilot permanent pen Sc-UF, can be used. Other pens that are "solvent-based" and not "water-based" will do the job. These are usually designated as permanent or waterproof. Just take a print along and try them out. For temporary marking on both slick-surfaced prints and negatives, use the china-markers sold in art-supply stores -- or the All-Stabilo pencils made by Schwan of Germany. Q: On a recent trip to Disneyland, every time we went to an inside attraction we were told, "No flash shots permitted!" Is there a way around this? I have a 35-mm camera with a good lens plus a tele and a wide-angle. A: First of all, I agree completely with the rule against flash photography of the inside attractions at Disneyland. It would be awful to ruin the atmosphere created by the Disneyland magicians in the Pirates of the Caribbean or the Haunted Mansion. Flashing would just wipe it out -- both for the unfortunate spectators who would be blinded in the dim light, and for "flashers" who would return with a dead flash reality of an elusive illusion.

Disneyland, by the way, permits photography everywhere outdoors and even allows flash at one inside attraction, "It's a Small World."

But to get back to your question. Yes, it's possible to take inside photos at Disneyland without flash -- at some of the attractions, which have about average stage lighting. The exposure for these attractions on Type B (tungsten) indoor color film at ASA 160 doubled to ASA 320 is 1/30th of a second at f/2.8.

You can double the ASA rating simply by setting your meter to ASA 320, shooting the entire roll at that ASA, then marking the film at the new rating and requesting special processing. (Eastman labs routinely do this at additional charge; other labs also can double -- and some will triple and quadruple to ASA 1280 the Ektachrome Type B professional film.)

Some tips on how to take these indoor shots: Choose a center seat up front, focus carefully each time you shoot and hold the camera as steady as you can.

You can also shoot in black-and-white with Tri-X film at ASA 400 or pushed to even higher speeds -- although, as I write this, I can't imagine anyone shooting such colorful subjects in black-and-white.