Re: Re[2]: SFX with IR filter

[Otto Giesenfeld <otto.giesenfeld@xxxxxxxxxxxx>]

--On den 3 september 1999, 12:16 +1000 Peter Badcock
<pbadcock@xxxxxxxxxxxxxxx> wrote:

> The 89B is equivalent to the Hoya R72, this being the lowest cut-off
> frequency  filter useable with SFX.  Be prepared for LONG exposure times.
> Although I  haven't used this filter with SFX myself I've heard that even
> in bright daylight hand holding is just not an option.
> 

This is contrary to my experience. In bright daylight with 89B (B+W 092 to
be exact), the film could be exposed according to EI 12-25. That enables
you to use 1/125s at f/5.6, which with many lens/subject combinations is
enough for sharp handheld photography.

If others have different experiences, my filter might have unusual
transmission characteristics for an 89B, but it certainly is next to
completely visually opaque.

Best regards,

Otto
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