For birdwatching and normal observations the 8×forty two binoculars are fantastic. Sadly for viewing planes at 30,000 feet you'll need higher powered binoculars (15x to 25x magnification). If you need to use a similar set of binoculars for recognizing the planes and for birdwatching we advise getting strong binoculars that https://canon-mirrorless07529.fireblogz.com/48189045/top-guidelines-of-eos-r