See how to fit 2 Telezooms in the Lowepro for Helgoland trip. First option is the Nikkor 200-400 and the Sigma 150-600 S. On the Sigma a camera can be attached for transport. The Nikkor fills the entire vertical space.

When using the Tamron 150-600 together with the Sigma 150-600 S, both can be transported with camera attached.