Film executive Kazuo Nakamura realized how pervasive digital cameras had become when he attended a young colleague's wedding in March and found that roughly one out of the 10 people in attendance who were taking pictures were doing so with mobile phones, not with conventional cameras.

For Nakamura, who heads the film division at Fuji Photo Film Co., to see cell phones equipped with micro digital cameras even breaking into one of the most traditional turfs of conventional cameras -- wedding pictures -- this was a reality check.

"A wedding ceremony is one of the most memorable events people have," he said. "But there were people taking pictures with cellular phones. I felt I had to keep closer tabs (on this trend)."