Q - How can one catalogue pictures for slide shows? I always seem to get some wrong ones into my projections.

A - Systems I've come up with are:

1 - keep the slides in the carousel trays and buy new ones (they're not that expensive) as you need them. This way the show is on hand and the carousel trays come boxed so that you can write the identification on the outside and stack them like books.

2 - I arrange the slides on a light table and number them in sequence, then stack them and draw a diagonal line across the top of the stack so that you can tell at a glance if any are out of order by the break in the line. To store these piles, cut a piece of light cardboard in 2-inch squares and place one square each on the top and bottom of the pile and crisscross it with a rubber band to hold them together. This makes a handy dust-tight package for storing.

Either system has worked for me. Of course, the second is cheaper.

Q - How can I make a simple, inexpensive light box to view my slides?

A - You can make a wooden box, or an old drawer will do. Paint the inside white or line it with white shelf paper. Place several fluorescent tubes inside and cover the top with a piece of opal plastic. This will make a perfectly satisfactory light-box.

First determine how large a light-table you want and buy your fluorescent fixtures accordingly. Each tube will cover about 8 inches of light evenly at a distance of 4 inches from the tube to the plastic top. Two fixtures will cover a 16-inch width.

You'll need a box depth of about 9 inches because the tube and fixture are about 4 1/2 inches high and the distance to the top plastic is most efficient at about 4 inches.

Be sure to buy the opal plastic, the one with white pigment impregnated throughout, not the one that is only white on one side and the rest clear plastic. The 1/8th-inch thickness is strong enough. Ask the shop to cut the plastic because it takes a fine-toothed saw to cut it smoothly.

There are many different colors of fluorescent light; buy the one that says daylight on the tube. To get an absolutely even light over the entire top area, you'll have to mask out the ends of the tubes by cutting a cardboard mat and laying it over the top.

Q - How do I set my camera film speed dial for the ASAs that are not marked, like ASA 64, 125 and 320?

A - There isn't enough space for all the ASA numbers, so only the ones that are doubled are marked. The ones in between are marked by dots that indicate a third-of-a-stop difference. So, to set your dial at ASA 64, use the first dot up from ASA 50, for ASA 125 use the next dot up from ASA 100 and for ASA 320 dial the dot just before ASA 400.

Q - We tried to take a photo of our daughter on TV. We used an electronic flash and the screen image turned out blank, although the surroundings came out nice and clear.

A - Several things were done wrong. One is that you can't flash a TV image - it wipes it out. And even without flash you need a slow shutter speed to capture the image.

The best way to go about shooting the TV screen is to set your shutter speed on 1/15th of a second and take your meter reading right through the lens and adjust the f-stop to the correct exposure. If you don't have a meter, try f-2.8 at 1/15th of a second at ASA 64; or with the new ASA 400 films shoot at f-8 at 1/15th of a second.

You should use a tripod or rest the camera on a table top. You can use books to adjust for height. Get as close as you can focus. Fill the camera frame with the TV screen image. If your lens won't focus close enough, use a telephoto - if you have one.

Finally, remember that you can't stop the action on the screen.