Adapter+filter on Kern lens
Posted 05 November 2017 - 08:16 PM
Posted 06 November 2017 - 04:01 AM
Hello Jean-Louis, I bought this ring adapter many years ago, I needed to adapt filters to particular size lenses mounted on my 9.5mm camera. I don't remember the name of the online store, but only that it was specialized in filters and adapters and that it was in the United States. If I remember something more I'll warn you.
Posted 06 November 2017 - 08:36 AM
one can find most types of adapter rings cheaply from Chinese eBay sellers. 32.5-37 is pretty common and should be easy to found.
if you have a rare thread size on the lens you should buy an adapter ring for it which changes it to a more standard size (ideally the one you already have filters for) and then use that one filter set on all the different size lenses. I personally use often 2 or even 3 step up rings on top of each other to use large size filters on small lenses, or even using the step up rings as a lens shade. it is also useful to be able to use the same size front caps on all the different lenses and it speeds up things a lot if using mattebox.
the point being, filters are very expensive compared to step up rings so it is much more economic to just have one oversized filter set and adapt them to all the different thread sizes when needed
Posted 06 November 2017 - 08:39 AM
Posted 06 November 2017 - 08:40 AM
so you don't necessarily have to use 37mm filters on the lenses, you can for example use 52mm filters which are much easier to find
Posted 06 November 2017 - 11:26 AM
Where did you find this 32mm-37mm ring?
Posted 06 November 2017 - 02:36 PM
Jean-Louis, I did a search, but the I don't find the site anymore, maybe it has disappeared. I took several filters in a multi measurements in that online store, branded "Sonia".
Posted 07 November 2017 - 05:32 PM
Guys, among these choices, is preferable the first one?
32mm ---> 37mm ---> filter
32mm ---> 42mm ---> filter
32mm ---> 37mm ---> 49mm ---> filter