Hi Sandy - I think you'll eventually see what I've seen here regarding the 1982 varieties. Geographical location seems to determine which variety is least/more common. For me, the 1982 D LD/zinc is the most difficult to find. I've only found 5 or so. But some folks here find these more often than any other Denver minted specimen. It's interesting. You'll also notice that this occurs for other variety coins, such as the WAMs.
Regarding photo taking, I have a nice camera, tripod, and small photo box, but I never use it. Instead, I predominantly use my iPhone for full coin shots and taking close-up pictures with it through my
AmScope eye piece. The trick is to keep the camera/phone very steady. To do this, I use a heavy object to steady the camera and this object needs to be at or about the optimal focal length for the phone camera. Use the zoom to make up the difference and try to fill the shot with your specimen coin. Use a flat/blank background for your shot. Busy backdrops (newsprint, finger tips) can play havoc on the autofocus so avoid this if possible. Lighting is essential and optimal lighting at that. Too little/too much and your shot may be worthless. Use diffusers to achieve optimal lighting (e.g. coop uses a plastic bag from the grocery store). Adjust your coin to catch the light as you need to; the goal is to get your detail/device lit up just right for the picture. And practice, practice, practice. Folks here have been able to pull off great shots with inexpensive setups. For me, this is half of the fun.
Optimization is a word not often used here in the West. We tend to Maximize everything, often to the detriment of what it is we are trying to achieve. Go slow and have fun and do more with less. Good luck to you and feel free to drop your questions with the members here. We are here to help if we can.