Mark Deeble

Thanks for all the help. I ended up with a Kern 5.5mm aspheron on the Kern Switar 10mm - which covers well on the 2/3" si2k chip.

Can anyone recommend where I can get a Zeiss S16 12-120 zoom cleaned and re-greased for a reasonable price in the UK? Thanks.

Thanks Zeiss aspherons seem very hard to find - but there appears to be a Kern aspheron which fits the Distagons but not the Vario-sonnar which I might try. I will also the test the 5.5 aspheron with the 10mm as by itself, my 10mm covers the 2/3" chip on the s12k which i have been told it is marginally smaller than an S16 frame.

Hello I wonder if anyone has had experience with aspherons - specifically either the Zeiss 'Mutar' for the 9.5mm distagon and 10-100mm Vario Sonnnar or the Kern equivalent for the Zeiss 9.5mm and 12mm distagons. I am interested in whether they cover S16? I have a Switar 10mm f1.6 preset which covers but again, don't know whether the 5.5mm aspheron for this lens would cover? Any advice would be great. Thanks Mark