Sometimes they are a matter of luck; the photographer could not expect or hope for them. Sometimes they are a matter of patience, waiting for an effect to be repeated that he has seen and lost or for one that he anticipates.

Advertising Disclosure: Please note that many links to retailers are affiliate links, which yields a commission for us. allauthor.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon sites.