Steve McCurry in monsoon floods, Porbandar, India, 1983. [Photo provided to China Daily Asia/Courtesy of Steve McCurry]

What if people say no when you want to take their photo?

That happens. If they say no, you just move on. You only have a 90% success rate, if you're lucky.

To get a great picture, sometimes you have to wait a long time. How do you know that perfect moment?

Sometimes it works and sometimes it doesn't. It depends on a lot of factors. It's about experience and you have to wait to find the right moment. You improve yourself as you practice – practice is everything.

What's the worst part about your job?

Airport security isn't fun – the whole airport experience isn't fun. It's the worst aspect of travel.