Yes, it works perfectly on Canon EOS R, RP, R5, and R6 mirrorless cameras when using the Canon EF-EOS R Mount Adapter.
Absolutely. The wide f/1.8 aperture allows significantly more light into the sensor than standard zoom lenses, making it ideal for indoor or nighttime shooting.
No, the STM (Stepping Motor) technology is designed for near-silent operation, ensuring that focus motor noise is not picked up by the camera's internal microphone.
On a Canon APS-C sensor (like the 80D or T7i), the effective focal length becomes 80mm, which is considered an ideal focal length for tight portraits.