What the 75mm 1.8 is good for

When out hiking I use a two-element Nikon T4 closeup filter on my 45 and it works beautifully - much lighter to carry than my 500 gm Tamron macro, and nearly as good for resolution and rendering. This little guy is about 5 cm high. My guess is that such a filter would be fine on the 75 as well with the right sized stepping ring - and would give even closer magnification given that the magnification effect increases with increasing focal length of the lens on which it is used