Leica APO-Summicron-M 90mm f/2.0 ASPH IRND Filters A close-up lens that allows

A close-up lens that allows detailed observation of objects at distances as close as 25-30 cm which is perfect for viewing butterflies and insects

which also helps keep the camera positioned firmly in front of you without sliding back and forth on one's neck

That is to say

These filters should be called UV-Blocking Filters

Leica APO-Summicron-M 90mm f/2.0 ASPH IRND Filters A close-up lens that allowsThis is a demonstration store. You can purchase products like this from Leica Store Miami. Apochromatic colour correction and an aspherical lens surface are combined for the first time in this lens of this type. Of its five individual elements, two are made of high refraction glass, while two others feature anomalous partial dispersion. Its brilliance and quality of resolution are exemplary even at full aperture. Light falloff is very low. Its fast