In 2012, photographer Mark Hirsch was in a serious automobile accident that left him with severe injuries. His condition forced him to rest his body for three months with very little activity.
"It was a physically and emotionally challenging experience," he says.
Around the same time, he bought an iPhone, and a friend, raving about the phone's camera, challenged him to use it for serious photography.
After Hirsch posted two beautiful pictures of a tree in a cornfield near his Wisconsin home, his friend suggested he use the iPhone to take a photo a day of the tree for a year.
Hirsch rose to the technological and creative dare, shooting the tree from hundreds of angles in all conditions, calling it "challenging but also quite liberating."
His project, "That Tree," has been recently compiled into a book and a calendar. We asked Hirsch to share three weeks of images in chronological order with us, along with his own captions from each day. You can the whole year on his website and his Facebook page.
February 19, Day 333: "It was a howling, blowing snow morning. Air temp, 1 degree. Wind chill, -19. Experiential rating, perfect!"
February 20, Day 334: "Contrasty, cold, and colorful! It was a brisk but sunny -2 when my publishing partner Warren Winter and I headed out to wait for this mornings sunrise. I photographed That Tree and he photographed me."
February 21, Day 335: "Destined to be the heart of a future oak, an acorn and fallen leaf ar exposed by the recent thaw. By the end of the day, they are forecast to be buried under a fresh blanket of six to eight inches of snow."