[rollei_list] Re: 6 x 9 search
- From: "Ellestad" <ellestad@xxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Fri, 31 Aug 2007 01:35:08 -0500
No, it is about a stop and a half.
Tim
----- Original Message -----
From: "Eric Goldstein" <egoldste@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Thursday, August 30, 2007 6:32 PM
Subject: [rollei_list] Re: 6 x 9 search
> You're way off relative to a 60ish mm lens shot on this format... the
> light fall off (not vignetting) is not anywhere close to an f/stop...
>
> Eric Goldstein
>
> --
>
> On 8/30/07, Ellestad <ellestad@xxxxxxxxxxx> wrote:
> > Be prepared for some vignetting though. You'll need at least a wide
field
> > lens to cover the full format. That should give about a stop and a half
loss
> > in the corners.
> >
> > Tim
> >
> > ----- Original Message -----
> > From: "Eric Goldstein" <egoldste@xxxxxxxxx>
> > To: <rollei_list@xxxxxxxxxxxxx>
> > Sent: Thursday, August 30, 2007 5:13 PM
> > Subject: [rollei_list] Re: 6 x 9 search
> >
> >
> > > A 60ish mm lens on 23 is about a 28 mm (or shorter) on 35 format. See
> > > the DOF numbers I sited, generated with about a f/1200 of the FL
> > > Unless you are shooting close and very wide open, you won't need to
> > > focus this lens with anything except the distance scale...
> > >
> > >
> > > Eric Goldstein
> > >
> > > --
> > >
> > > On 8/30/07, Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
> > >
> > > > The problem with Speed or Crown Graphics with Kalart
> > > > side rangefinders is that the RF is adjusted for only one FL
> > > > lens. Other lenses can be focused on the ground glass but
> > > > that precludes certain kinds of photography. On a 4x5 the
> > > > lensboard is riding the inside part of the rail and the drop
> > > > bed must be used so the rangefinder won't work even if it
> > > > could be adjusted for such a short FL. This might work on a
> > > > 2x3. I don't have a Pacemaker 2x3 so I don't know how it
> > > > would work with a short FL lens. Normal for these cameras is
> > > > either 102mm or 105mm, the diagonal being about 102mm so a
> > > > 60mm lens is not that short, about equal to a 90mm on a 4x5.
> > > > Has anyone here had experience with the rangefinder
> > > > Mamiya or similar cameras? They look interesting for
> > > > hand-held work and I see them occasionally at local camera
> > > > sales. Lenses for other Mamiya cameras seem to be excellent
> > > > so perhaps this is a sleeper.
> > > >
> > > > ---
> > > > Richard Knoppow
> > > > Los Angeles, CA, USA
> > > > dickburk@xxxxxxxxxxxxx
> > > >
> > > >
> > > > ---
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