The statement "This artist pays close attention to capturing the shadows on the subject's face and unbiased opinion" appears to mix two different ideas. The first part about capturing shadows suggests a focus on the technical aspects of portraiture, which is a valid observation regarding an artist's technique. The second part, "unbiased opinion," seems unrelated or improperly connected, as it doesn't logically follow from the first part about artistic technique.
To enhance clarity, you might consider rephrasing it to more clearly separate the two ideas or to explain how they are related. For example:
"This artist pays close attention to capturing the shadows on the subject's face, demonstrating a nuanced understanding of light and form, which contributes to a more objective portrayal."
This revision maintains the emphasis on artistic technique while linking it to the idea of an unbiased perspective.