The Zeiss UV filter also protects against bluish daylight, which does not affect the shooting. It also acts as additional protection for the lens.

The Carl Zeiss T* UV filter is a general purpose filter that helps reduce ultraviolet light and bluish daylight. No additional color or contrast effects, ensuring a clean and natural-looking image.
The T* anti-reflective coating helps reduce reflections on the filter surface and produces high-quality images. The filter ring is designed to be thin, so it can also be used with wide-angle lenses.
The UV filter also provides additional protection for the lenses from splashes of water, dust and fog.