The IS on the Kite 16x42 APC Stabilizer works very fast so I have no problem with IDs on fast birds. The IS works fine on horizontal movement and for a 16x with a 3.9 degree FOV birds are about as easy to locate as you would expect with that high of a magnification although it is not as easy as a lower magnification of course but once you do locate the bird you see much more detail than even a normal 16x binocular. I found the Kites to be better than all the different Canons I tried, as far as, stabilization and optics except for the Canon 10x42 IS-L which are a little better optically due to the HD glass and bigger AFOV. The Fujinon 14x40 TSX had a little better stabilization than the Kite and it too has excellent optics but it has a smaller AFOV than the Kite and it is a huge, heavy binocular at over 46 oz. which is more suited to static use on a boat for fishing. For long distance birding and wildlife observation where you are going to do any hiking at all I found the Kite 16x42 APC Stabilizer the best choice.How does the Kite work to ID fast flying birds?
IS engage fast,?
IS work on horizontal movement?
Easy to locate in FOV?
other IS binoculars better?