The specifications of the Xperia PRO-I that I got from the email still show that Sony still maintains their superiority in terms of camera technology.
The main point is that they actually use the original sensor commonly used in camera products.
Namely type 1.0

THE Camera
The ‘I’ stands for Imaging.
The Xperia PRO-I redefines the camera by combining a 1.0-type image sensor and our advanced imaging technologies. (The Xperia PRO-I redefines the camera by incorporating a type 1.0 image sensor and advanced imaging technology.)

1.0-type image sensorTheXperia PRO-I features a genuine 1.0-type sensor, enabling you to capture photos and videos with exceptional imaging quality.
(1.0-type image sensorThe Xperia PRO-I features a genuine 1.0-type sensor, enabling you to capture photos and videos with exceptional imaging quality)

Triple lens Camera with Zeiss opticsThe24mm lens with a 1.0-type image sensor is complemented by two more lenses, a 16mm and a 50mm, letting you get creative with composition. (The 24mm lens with a 1.0-type image sensor is complemented by two more lenses, a 16mm and a 50mm, letting you get creative with composition.)

Authentic Camera experience

With its dedicated shutter button, the Xperia PRO-I feels a lot like our RX100 series, and the distinctive waved-edge frame delivers high-grip performance.