Examine the inner side of the arms for model codes like RB2132. Lens size is typically shown following the model name, representing the width of the lens in millimeters. For example, RB2132 55 indicates a 55mm lens width.
Examine the inner side of the arms for model codes like RB2132. Lens size is typically shown following the model name, representing the width of the lens in millimeters. For example, RB2132 55 indicates a 55mm lens width.
