Best telephoto lens for sony e?

Here is what the site says about that.

From Sony FE 100-400mm f/4.5 GM OSS: Sony FE 100-400mm f/4.5 GM OSS: A zoom lens by Sony for Full frame cameras, 100-400mm f/4.5. A constant f/4.5 telephoto zoom for sport and wildlife, sold alongside the older f/4.5-5.6.

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.

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