Hi folks,
I have read many threads on this site regarding the thread size of screw-on filters for the vintage Voigtländer Ultron lens (here my camera https://matteo-marini.blogspot.com/2024/04/voigtlander-prominent.html). I would like to get a step-up ring for ND filters in order to shoot at big apertures in daylight.
I know that the thread is 45 mm but I have not found any mention to the pitch size: I suspect it is a 0.5 but, considering the scarcity of these rings, I would like avoiding a bad purchase.
Any help ?
