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'