Re: Nighttime and astrophotography with IR

[boblong@xxxxxxxxxxx (Robert Long)]

On Wed, 04 Sep 1996 09:12:58 +0100, Willem-Jan Markerink wrote:

|Ah, you mean to compensate for the white snow?

I also meant whether you exposed for subtle detail in the snow or for
larger forms.  Your previous post (to Bobbi?) made it plain that you
go for the larger forms, because you urged looking for shadow areas.
In snowy landscapes with conventional film (or expecially with the
late, lamented PCF) I often metered from the snow itself to retain the
sparkle of the highlights with a crystalline or icy surface and
sufficient differentiation of the subtle variations of "white"
(actually photgraphed as blue-grays) in the undulating surface.

|As for external meters (I never have been fond of putting the filter 
|on and off for no-filter TTL), my rule of thumb is 400 ASA to start 
|with, add +3 for red, +4 for #87, and +5 for #87C.

On skis, with mittens or even ski gloves, popping a filter on and off
would be impractical, I should think.  And even fussing with an
external meter...

|And after seeing a constant 1/60@xx (roughly) as a result of that
|(#87C), I don't bother too much with the external meter any more, at

WHY doesn't it start snowing?!  Oh, that's right: it's only September.

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Topic No. 12