Special Coating New developed ultra-low reflection coating for digital camera does minimize flare and ghost. Black-ink processing on lens' outer rim Lens' outer rim blacked with ink to minimize the inner reflection. Special frame Satin-like smooth frame for all types to minimize extra reflection Ideal for close-up shooting with digital camera. The DHG Macro 3 shortens focal distance and enables you to enjoy macro shooting without complicated arrangement.Its high-frame does cut unexpected rays and minimize extra reflection.