I have finally got an apochromatic normal lens beside Macro Switar 50/1.9,
and the lens can focus very close too by using M42 helicoid. MFD = 0.33m
Of course you can do it by using any EL-Nikkor or APO-Rodagon also, or
you can get Zeiss Otus 55mmF/1.4 or Kern Macro Switar 50mmF/1.8 too.
Setting: (the lens) + (L39->M42) + (M42->M w helicoid) + (M->E w helicoid) + a7
In the above M42->M w helicoid is my hand made for G-Planar 45mm mod, and
M->E w helicoid is Hawks adapter, the above MFD is @the both helicoids extended.
When the both helicoids are contracted, the lens is its infinity position very luckily.
You can get Yeenon M42->L39 with helicoid and Hawks, however I am not sure
this setting can focus infinity or not. Anyhow you need less than 25.5mm between
E-mount flange (of camera) to this lens' L-mount base. Since Yeenon supplies L39-
M42 ring so you can directly mount your lens to this helicoid tube with 13.5mm one.
13.5(Yeenon M42->L39) + 1 (any L->M adapter) + 11(M->E adapter) = 25.5mm
With this setting your lens' MFD will be much shorter than 0.33m, since this
helicoid tube extends to 23mm from 13.5mm, mine goes only to maximum 18mm.
If you pick a cheaper M->E adapter w/o helicoid, your lens' MFD will be 0.33mm.
Actually Yeenon's helicoid extends from 13.5mm to only 21mm, so MFD is 0.3m,
but you have more freedom to choose some more enlarger lenses I guess.
See this Yeenon helicoid > http://www.pbase.com/kkawakami/image/161506829