Sony has confirmed plans to sell two stand-alone lenses that connect to smartphones by wi-fi, allowing them to take higher-quality photos.
The devices are compatible with Android and iOS handsets and mark the creation of a new product category.
The Japanese company announced the products alongside a new smartphone which features a 20.7 megapixel camera and a larger-than-normal image sensor.
The launches should help the firm challenge Nokia's top-end handset.
The Finnish company - which is in the process of being taken over by Microsoft - unveiled the Lumia 1020 in July. Reviews have suggested that it has the best smartphone camera on the market, but were critical of its price,
Sony told the BBC it would target its Z1 handset at a wider audience than what it called the Lumia 1020's "super-premium category".
It confirmed details of the devices at the Ifa consumer tech show in Berlin - much of the information had already leaked via tech news sites.
One analyst suggested the lenses in particular would struggle to find buyers.