Best telephoto lens for the panasonic lumix bs1h?

Here is what the site says about that.

From Panasonic Lumix BS1H: Panasonic Lumix BS1H: A mirrorless camera by Panasonic with a 24.2-megapixel full frame sensor, announced in 2021. A full-frame box camera for rigs and broadcast, with no screen or viewfinder. Specs - Maker: Panasonic - Mount: L-Mount - Sensor: Full frame, 36 x 24mm, crop factor 1.0 - Resolution: 24.2 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2021 - Type: mirrorless camera Focal lengths ...

From Sensor sizes: What it costs you: - Size, weight and price, especially of the lenses. A full-frame telephoto is much larger than its APS-C or Micro Four Thirds equivalent. - Less depth of field when you want more of it, for macro or landscape.

Quoted from this site's pages.