What's a good focal length for landscape panorama?

[dinghankar]

I have a m50mk2 with all efm 15/45, 22, 55/200 lenses. As we know too wide of a focal length will cause distortion the landscape and if I go too high of a focal length I will loose the landscape outside the zoom edge or I'll have to take more photos to cover the same area with a wide focal length. So what's the optimism focal for minimum landscape distortion?

[ebiggs1]

Wow, you've changed but OK.

[johnrmoyer]

You can use most any focal length if your stitching software knows the focal length and is able to calculate a projection.

This is 6 images at 100mm from a moving tour boat. Stitched using hugin on Linux. Reduced size for upload. EOS 80D.

Glacier in Chugach National Forest near Whittier, Alaska, August 7, 2019

[ebiggs1]

Nice shot!