For seeing pictures and watching videos, 8 bit is good.
Its when you start manipulating images that it doesn't work out. For example, you have a nice sunset picture but its dark and you can't see the people in front. As a result, you try to increase saturation, contrast and exposure. The people's faces are still dark so you try to change the exposure more aggressively. That's when the picture breaks down. The sky sunset becomes pixelated, maybe the skin becomes white etc. If you use a 8-bit display you wouldn't know if it's because of the effects or because of the 8bit monitor. With a 10-bit display, if it looks crap, at least you know its from the picture you took.
This might look an extreme example bit it happens often for photographers and videographers. It can also happen for consumers if they try to check a picture which lots of minimal variations if the same color in the same picture. A good example is a picture of a white sky. It can appear pixelated in a few parts
Its when you start manipulating images that it doesn't work out. For example, you have a nice sunset picture but its dark and you can't see the people in front. As a result, you try to increase saturation, contrast and exposure. The people's faces are still dark so you try to change the exposure more aggressively. That's when the picture breaks down. The sky sunset becomes pixelated, maybe the skin becomes white etc. If you use a 8-bit display you wouldn't know if it's because of the effects or because of the 8bit monitor. With a 10-bit display, if it looks crap, at least you know its from the picture you took.
This might look an extreme example bit it happens often for photographers and videographers. It can also happen for consumers if they try to check a picture which lots of minimal variations if the same color in the same picture. A good example is a picture of a white sky. It can appear pixelated in a few parts