Task: Text to Code
Input (English): SQL: SELECT Count ( * ) FROM mountain AS T1 WHERE T1.id NOT IN ( SELECT T2.mountain_id FROM photos AS T2 )
Feedback: Replace mountain id with camera lens id in step 1 , mountain with camera lens for both in step 2.
Output (English): SELECT count(*) FROM camera_lens WHERE id NOT IN ( SELECT camera_lens_id FROM photos )