TTL without Boundaries! Cactus launches FREE firmware upgrades on the V6 II and V6 IIs to support wireless cross-brand TTL. Hong Kong, March 24, 2017 – Just nine months since the release of the Cactus V6 II and Cactus V6 IIs, Cactus is now launching a series of brand-specific firmware upgrades to transform the cross-brand … Continue reading Cactus X-TTL