Read the following context and answer the question.
Context: Enter an inability to focus on anything 18 inches from my face . I had to take a half day off work and rest my eyes . The camera is surprisingly good for what it is : August lilies ( fragrant and tall ) in Simpson Park , Alexandria , VA Now it 's autumn and the colchicum are in bloom : Colchicum in Simpson Park , Alexandria , VA In my walk down in the park this evening ( after dark , so no pictures ) , I discovered a tree with mysterious fruit .
Question: What caused the person 's inability to focus ?
Answer:


Looking through the camera view finder too much .