Bob:
Excellent detail and a nice series! I particularly like the avocet couple with total reflection. Rather artistic I might add ...
Andrew:
A small amount of noise in digital image you see on your monitor would most likely not show up in prints. Excellent result from your slides can be obtained from a quality film scanner. For 35mm format I'd recommend a Nikon Super Coolscan 5000 ED or Coolscan V ED (if on a budget). You can get it from Wing Sing Photo Supplies in Mongkok, 55 Sai Yeung Choi Street.
