Leica M9: which wide angle lens?

[Ahel]

I have never used a Zeiss ZM 18/4 or Zeiss Hologon 16/8.
Does anyone here have some advice on which lens to get?
The 18/4 is in M mount while the 16/8 Hologon is converted to M.
Who has Leica M9 review?
I need your collective advise.

Thank you.

 

[Dave442]

I would not get the 16mm f/8 unless you really need that combination of super small footprint and ultra-wide angle. The 18mm f/4 is much more practical (I know - a Leica camera and practical are not usually used together - but we are talking Zeiss lenses). My personal selection would be the 21mm f/4.5 - I have a hard time shooting anything wider than that - and when I do it is because I stitched a few images together.

 

[Derrel]

I would rather have the 18 mm lens.