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 photos (camera_lens_id VARCHAR); CREATE TABLE camera_lens (name VARCHAR, id VARCHAR, brand VARCHAR)
### Question:
What are the names of photos taken with the lens brand 'Sigma' or 'Olympus'?
### Answer:
SELECT T1.name FROM camera_lens AS T1 JOIN photos AS T2 ON T2.camera_lens_id = T1.id WHERE T1.brand = 'Sigma' OR T1.brand = 'Olympus'