We're prone to thinking of old box TVs and film cameras as antiquated technologies. But DVD players, digital cameras and iPods have also passed their zenith.

These three products have hit their adoption peaks in Australia, according to new research by Roy Morgan.

Flat screen televisions have made their way into 7 million Australian homes. Credit:Reuters

The proportion of households with a DVD player peaked in 2008 at 75 per cent, and then began to decline. It now sits at 60 per cent.

"While some households around 2008 were only then buying their first DVD player, these late-adopters were outnumbered by those discarding or recycling them," said Tim Martin, Roy Morgan's general manager of media, telco and digital clients. He said that since the peak, more than 800,000 homes have discarded at least one DVD player.