[pure-silver] Re: grain and focus
- From: Eric Nelson <emanmb@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Wed, 16 Apr 2008 17:06:09 -0700 (PDT)
I used to see more grain with images made with a 24mm
Canon I used to have and never knew why. Grain always
seemed more pronounced using that lens.
Eric
--- Shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx>
wrote:
> I don't notice the problem so much with 120 film,
> even when I enlarge
> it by the same factor. But I shoot it in another
> camera. I wonder if
> the lens and camera can affect graininess? I also
> shot some FP4+ in
> that camera during the same period of a few days,
> and of course it
> looks less grainy. Somebody told me once that
> cameras from the
> thirties work better with slower film because that
> is all there was
> back then. Maybe I should only shoot FP4+ in my
> 1937 Leica.
>
> --shannon
>
>
> On Apr 16, 2008, at 5:50 PM, Eric Nelson wrote:
>
> > I used to wish my skies weren't so grainy but once
> I
> > started using PMK I noticed that disappeared, esp.
> > with 120.
> >
> > I can't speak to 35 so much, but with 120 I found
> that
> > PMK definitely made a difference.
> >
> > Eric
> >
> > --- Richard Knoppow <dickburk@xxxxxxxxxxxxx>
> wrote:
> >
> >>
> >> ----- Original Message -----
> >> From: "Shannon Stoney"
> >> <shannonstoney@xxxxxxxxxxxxxxx>
> >> To: <pure-silver@xxxxxxxxxxxxx>
> >> Sent: Wednesday, April 16, 2008 12:48 PM
> >> Subject: [pure-silver] grain and focus
> >>
> >>
> >>>
> >>> I made some 35mm pictures last winter using an
> >> ancient
> >>> Leica and mostly HP5+. Some of the negatives
> are
> >> pretty
> >>> grainy, even when they're only enlarged to 4x6.
> >> The
> >>> graininess seems to happen in the out of focus
> >> areas, of
> >>> which there are a lot because the aperture was
> >> wide open
> >>> and many of the pictures were taken inside
> without
> >> a
> >>> flash. When I use this camera outside and
> >> everything's in
> >>> focus, there is usually no grain to speak of.
> Why
> >> is
> >>> there this relationship between apparent
> >> graininess and
> >>> out of focus areas?
> >>>
> >>> --shannon
> >>>
> >>>
> >> I think this is an optical illusion, the
> details
> >> of the
> >> image tend to suppress the visibility of the
> grain.
> >> Examining the negative through a strong magnifier
> or
> >> using a
> >> grain focuser on your enlarger should demonstrate
> >> this.
> >> Now also grain varies somewhat with the
> density
> >> of the
> >> image being greater for higher density. This is
> one
> >> reason
> >> for the old recommendation to make negatives as
> thin
> >> as
> >> possible while retaining good shadow detail.
> >> I have not used any HP 5 for a long time and
> >> don't
> >> rememeber what its like but, if grain is an issue
> >> you might
> >> try either Tri-X (ISO-400) or 400T-Max both of
> which
> >> are
> >> quite fine grain for film of this speed. Xtol is
> a
> >> good
> >> developer for both for minimizing grain without
> >> loosing
> >> speed.
> >>
> >> ---
> >> Richard Knoppow
> >> Los Angeles, CA, USA
> >> dickburk@xxxxxxxxxxxxx
> >>
> >>
> >
>
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> >>
> >
> >
> >
> >
> >
>
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