text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE mountain (id VARCHAR, country VARCHAR); CREATE TABLE photos (camera_lens_id VARCHAR, mountain_id VARCHAR)
  ### Question:
  How many distinct kinds of camera lenses are used to take photos of mountains in the country 'Ethiopia'?
  ### Answer:
  SELECT COUNT(DISTINCT T2.camera_lens_id) FROM mountain AS T1 JOIN photos AS T2 ON T1.id = T2.mountain_id WHERE T1.country = 'Ethiopia'