Graduated Neutral Density Filter

Started May 6, 2014 | Discussions thread
Bob Sal Senior Member • Posts: 1,529
Re: I was trying to find...

Pete_CSCS wrote:

Klarno 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.

Heliopan's website lists the ND grad as being plastic.

... what the Heliopan screw-in was made out of but the websites that I found selling it weren't listing that information. I thought at that list price it would be glass.

The rectangular one they make is made out of glass at least.

You are partly right. All screw-in Heliopan grads are made from acrylic.

Today's rectangular Heliopan grads are also acrylic.

Up until about 8 or 10 years ago Heliopan did make 1, 2 and 3 stop glass grads that were air brushed and then sealed in glass. Unfortunately the man that made these grads died and no one had been trained to replace him and Heliopan discontinued the glass grads. You can still see one here:

it is the last one we have.

Heliopan made these in both 4" and 3" widths. They required a special Heliopan holder as they were too thick to fit the holders on the market today.

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