As previously pointed out in the leaks, the Sony FX3 Cinema Line does indeed carry some hardware elements from the A7S III, packed into a more compact A7C-like body. However, the camera does feature a different sensor – specifically, a back-illuminated full-frame 10.2MP which Sony claims to offer low noise, up to 409,600 ISO in sensitivity and over 15 stops of dynamic range. Included onboard is the same S-Cinetone colour matrix that is also featured on the brand’s FX6 and FX9 cameras, as well as eleven different picture profile settings such as S-Gamut3 and S-Gamut3 Cinema. However, unlike its Cinema Line brethren, the FX3 does not come with an internal electronic ND (neutral density) filter.
The new camera is able to capture videos in 4K with 10-bit 4:2:2 colour sampling internally or 16-bit RAW output via HDMI. Frame rate-wise, it can record up to 120 fps in 4K resolution and up to 240 fps in Full HD 1080p. Much like the Sony A7S III, the FX3 Cinema Line does not have the ability to record 8K footage, although that is to be expected considering its size. It is also worth noting that it does come with better internal cooling than the aforementioned model, allowing it to shoot videos at up to 13 hours uninterrupted. According to Sony, the cooling system’s fan can be customised to operate in three modes: Auto, Minimum and Off.