The Backscatter TTL Flash Trigger for Sony cameras is a useful accessory for underwater photographers, especially beginners. It allows for more consistent and well-exposed photographs, thanks to its reliable TTL (Through The Lens) feature, which automatically adjusts strobe brightness. The trigger is easy to install and has good battery life, lasting through several dives. While it excels in TTL mode, experienced photographers can switch to manual for more control in complex scenes. Overall, it enhances the underwater photography experience, making it easier to capture stunning oceanic moments.