What is the fine-grained topic of the following text: Slightly wider than the venerable 50mm standard focal length, the Nikon F mount SP 45mm f/1.8 Di VC USD from Tamron presents a unique perspective and pairs it with a sophisticated optical layout and VC image stabilization for enhanced image quality. Only return the topic.
Nikon F mount SP 45mm f/1.8 Di VC USD lens from Tamron