In the end the two lenses are a perfect dream-team for nature and landscape photography they share the same filter size and the handling are the same, the 50mm are perfect for landscapes and 2D macro shots while the 100mm are better for 3D objects where subject isolation is a must. I think the Zeiss 50mm 2,0 Makro-Planar is the ultimate standard lens. Final words: replace the flimsy Zeiss front lens-cap with the much better Nikon lens-cap!