Camera differences.

SpeleoMap uses whatever cameras your iPhone has and switches lenses as you zoom. Here's what each one adds underground.

48 MP main camera. Choose 12, 24 or 48 MP photos in Settings → Media. Phones with a 12 MP main camera shoot 12 MP.
Ultra-wide (0.5x). Fits more of a tight passage or a big room in one shot.
Telephoto. Zoom in on a high lead or a far wall without climbing to it.
Macro. Close-ups of formations, fossils and cave life. The macro button only appears when your ultra-wide focuses close.
LiDAR depth. On Pro and Pro Max, photos and video carry depth you can measure later. During a Cave Line the camera stays on the survey's tracking; lenses and flash come back when no line is open.
Larger LiDAR photos. On iPhone 14 Pro and later Pro models, LiDAR photos can be 12, 24 or 48 MP, depth included: choose in Settings → Media → LiDAR → Photo resolution. The setting shows only the sizes your LiDAR camera offers. iPhone 12 Pro and 13 Pro take 12 MP LiDAR photos, and so does every iPhone while a Cave Line is open. What LiDAR adds
Video options. Frame rate, quality and format live in Settings → Media. Media settings