Sony has published details of two OLED displays, giving more detail about the electronic viewfinders used in its SLT A65, A77 and NEX-7 cameras. The displays are based on white LEDs slining through color filters, rather than direct-emitting colored LED technology, helping them to offer higher resolutions combined with 90% coverage of the NTSC color gamut. The company also claims a contrast ratio of 10,000:1 - ten times greater than that offered by its latest WhiteMagic rear LCD screens, also detailed in the company's latest semiconductor newsletter. Their appearance in the newsletter is likely to mean they are available for sale to other manufacturers, raising the prospect of other makers' cameras appearing with high-resolution OLED EVFs.
As well as the 4:3 screen used in the SLTs and NEX viewfinders, the company also reveals a larger 16:9 display, presumably for use in video applications.