Re: [APML]: f/# for star trails

["Bobby Middleton" <bobbym@webwide.net>]

Sorry, I forgot that detail. Kodak PJM; and wouldn't I need to use the deep
sky filter?
Bobby Middleton

----------
> From: Richmann, Michael 
> Depends on the film.  Let me know and I can extrapolate it
> from Lumicon's recommendations on using their Deep Sky
> filter.
> 
> Mike
> 

> > From: Bobby Middleton 
> > 
> > Hello all,
> > What would be the best f-stop # for a 5 or 6 hour star trail picture.
> > This
> > is with a 28mm lens at a 
> > moderately dark location (some horizon glow 90 DEG from where I'm
> > pointing
> > at). I'm guessing for that long maybe f/16?
> > 
> > thanks for the help, 
> > Bobby Middleton