Graduated Neutral Density Filter

Started May 6, 2014 | Discussions thread
Bob Sal Senior Member • Posts: 1,529
Re: I read the black anodized part...

Pete_CSCS wrote:

Bob Sal wrote:

Pete_CSCS wrote:

Klarno wrote:

I use a screw-in filter (Tiffen HT grad ND 0.6, the only screw-in grad that's both multicoated and glass).

The Heliopan grads are made in Germany from Schott glass and most of their filters use a 16 layer coating. They also use the black anodized brass frames like B+W (Schneider) filters.

'When nothing seems to help, I go and look at a stonecutter hammering away at
his rock perhaps a hundred times without as much as a crack showing in it.
Yet at the hundred and first blow it will split in two,
and I know it was not that blow that did it,
but all that had gone before.'
-- Jacob Riis (1849 - 1914)

Stay Well,
Pete K.

Please note, brass is not anodized. aluminum rings can be anodized. The brass are matte black finished. This is true for Heliopan, B+W and Rodenstock brass mount filters.

... at this website:

Unfortunately I wrote that page and it has not been corrected. I repeat. Brass rings are matte black finished. Aluminum rings are black anodized.

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