If a verb describes the subject, it is a connecting verb. Look for a subject complement to evaluate whether the phrase utilizes a linking verb.
A few verbs can be either linking verbs or action verbs, aside from the three basic linking verbs (be, become, and seem), which are always linking verbs. Using them differently makes a difference. Particularly when it comes to sensory verbs, which can be either, this is true.
Linking verbs usually have a subject complement following them (unless in uncommon situations like "I believe therefore I am").
Look serves as a connecting verb in this sentence since it describes Shane’s looks. Due to the subject complement fantastic today, which explains how Shane appears, you can also recognise it as a connecting verb.
In this context, the verb looks is an action verb rather than a linking verb. Not Shane herself, but the activity that Shane is performing is described. Through the lens describes where she looked in relation to the action.