I'm not them, but I have a similar process. I've got a mirrorless instead of DSLR, and a supertelephoto zoom lens (Sony a7R4 with 200-600mm f/5.6-6.3 lens). I'v

I'm not them, but I have a similar process. I've got a mirrorless instead of DSLR, and a supertelephoto zoom lens (Sony a7R4 with 200-600mm f/5.6-6.3 lens). I've also got a superzoom (Tamron 28-200mm f/2.8-5.6) lens for closeup and occasional landscape images. I'm mostly interested in taking pictures of birds, including in flight. So long focal length is the biggest benefit. High resolution (allowing for deep crops while still getting a decent sized output) is another benefit. Good tracking auto-focus is another. I use my phone mostly if there's a pretty landscape or flower and I don't want to switch lenses. I'm also willing to use my phone in some situations I wouldn't risk the camera & lens, eg while kayaking (in a waterproof case with lanyard). And of course the phone is lighter, so in everyday situations I'll have it, if I want to take a picture.