Hi experts, I am aware using prisms enable total internal reflection while using mirrors there is only reflection of light. The difference is that in the former there is 100% light intensity after reflection while the latter does not. I have also read that using prisms is better than using mirrors as the reflective surfaces of the mirrors may degrade with time. My question is: What about the image quality (e.g. sharpness, brightness, colour accuracy)? Thank you in advance.