Hi.

Does anyone know what the proper size filter is for the 190mm f5.6 Ektar used on the Super D? It doesn't appear to have threads for a threaded filter, so I'm assuming it's supposed to use slip on filters, but I'm not sure of the exact size. Thanks.

only thing I ever got to work was a kodak series seven adapter. I forget the acutal size but you can just measure the outside dia of the lens and then go search on the web for it. I found mine in a junk box in a NYC camera shop, cost about 2 dollars. I've sold my 4x5's but that adapter is still here someplace. If I find it I'll update this post.