I already had the adapter for my Vortex Razor spotting scope, but getting a new phone necessitated a new Phone Skope case. I really like that the Phone Skope case allowed me to choose between the standard and telephoto lens of my iPhone 12 Pro. It centered my images perfectly, holds my phone securely even in windy or unstable conditions, and with the 2-piece design, doesn't leave any bulky or awkward rings or tabs on my phone case when not in use. Great product that every serious outdoorsman should consider having!