The CFexpress Type A card was pioneered by Sony and is significantly than the more-widely-used CFexpress Type B cards. The format was first introduced for use with the Sony A7S III in 2020
The new CEA-G320T 320GB and CEA-G640T 640GB cards will join the current 80GB and 160GB in Sony's existing CFexpress Type A Tough range.
The cards offer a high-speed performance with a maximum writing speed of up to 700MB/s – and Video Performance Guarantee, or "VPG400", which offers sustained writing speeds of up to 400MB/s, and enables 4K 120p high bit rate video shooting.
The Tough branding, we are told, means they have been certified to be waterproof, dustproof, and robust enough to support stable long-term shooting in various environments.
The 320GB version of the new Sony card will be available from October for $650 / £600 / AU$1,299 – with the 640GB card going on sale in December for around $1,250 / £1,200 / AU$2,499.