Photographer Eugene Ellenberg's father was diagnosed with liver and lung cancer in July 2013. After the diagnosis, Eugene documented his dying father’s last days with his camera phone. In these photos, the family was able to say goodbye.

Ron Haviv was one of the first photographers to land in Haiti after a massive earthquake devastated the region on January 12, 2010. He returned last month to document the situation two years later, using his iPhone to capture images of children living in shelters and on the streets.

Tyson Wheatley, a Senior Editor for CNN.com, found himself turning to his iPhone to document his new home after relocating to Hong Kong in January. He started out sharing his adventures with family and friends he'd left behind, but found himself quickly connecting with the Instagram community.

Palani Mohan traded his bulky camera for one that weighs less than 5 ounces as he captured the essence of Hong Kong through the lens of an iPhone. At first he thought of the camera as a toy, but now he believes it will be a big part of the future of documentary photography.