Re: Hoya RM90 (was "fixed" NightShot)

[Joshua_Putnam <josh@xxxxxxxxxxxx>]

"Willem-Jan Markerink" <w.j.markerink@xxxxx> writes:

>I am a bit confused by the Hoya RM90....I got one a few months ago,
>but despite it's transmission plot, it is not completely opaque to
>the eye, not even in daylight....much less opaque than a #87C,
>almost at the level of a #88A. Note that this doesn't say much about
>what it does on film....it might only 'leak' 1% visible, but still
>do a good job on film/video. It just isn't opaque, something one
>would expect from an #87A equivalent.

I wonder if this could have been done intentionally -- is the
transmission in the visible spectrum sufficient to allow
composition through the filter, perhaps using a focusing hood
and a tripod?

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