The inside, however, is where the substantial differences are. Both lenses use an assortment of molded glass, low-dispersion, and extra-low dispersion elements, which includes a floating element to help reduce the minimum focusing distance and increase sharpness throughout the range of focus. As a result, the 35mm f/1.8 focuses down to just under 8 inches, while the 45mm lens can focus at just under a foot. I’ve had a chance to actually use both lenses over the past few days and I can say that they really do perform a lot like a typical macro lens does when you focus, especially the 35mm lens. Although they don't provide true macro subject magnification, the 35mm provides a maximum magnification ratio of 1:2.5 and the 45mm, 1:3.4.