Im thinking about to replace my normal-lens 80mm f2.8 whith an 80mm f4 macro. Is that macrolens equally good and as sharp at infinity? I shoot landscapes mostly but like to take closeups sometimes. Want to travel lite but also have Mamiya 45mm and zoom105-210mm lenses to carry. So another lens like 120mm f4 macro is out of the question i think. I shoot slides, mostly velvia for slideshows. In 35mm one of my favorite lenses are micro-nikkor 55mm f2.8. Extremly sharp lens at all distances, but more prone to flare and more vignetting at same aperture than nikkor 50mm f1.8.