[pure-silver] Re: APX400, flatness, old glass

  • From: <genej2@xxxxxxx>
  • To: <pure-silver@xxxxxxxxxxxxx>
  • Date: Tue, 21 Feb 2006 17:05:16 -0500

You know Richard,

I never gave that much thought to film flatness, and this experience surprised 
me in a couple of ways.  Like I didn't expect the oldstyle back to be THAT bad, 
and I didn't expect the newer one (with rollers) to be THAT good.  I also 
wouldn't have expected you to have found sheet film that wasn't flat!  Just 
goes to sho ya, it's always somethin! BTW, the RB 67 back looks like it would 
probably fit on a mini graflex.  They are really nice and well made but only 
have a film area of 55 x 65.  Not bad, but the graflex 6x9 is noticeably 
bigger, and I like that.  With the negs from this camera, I print a lot of 2/3 
aspect ratio prints and I don't like having to crop so much image off.

Gene
> 
> From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
> Date: 2006/02/21 Tue PM 05:01:25 EST
> To: <pure-silver@xxxxxxxxxxxxx>
> Subject: [pure-silver] Re: APX400, flatness, old glass
> 
> 
> ----- Original Message ----- 
> From: "Brian Reynolds" <reynolds@xxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Tuesday, February 21, 2006 8:58 AM
> Subject: [pure-silver] Re: APX400, flatness, old glass
> 
> 
> > genej2@xxxxxxx wrote:
> >
> >> I was using an old 3x4 RB Graflex with a graflex 2 1/4 x 
> >> 3 1/4
> >> rollfilm back.  This back is unfortunately one without 
> >> the extra
> >> flattening rollers and I've just learned the hard way 
> >> that those are
> >> important.  Didn't ruin the pictures.  We were going for 
> >> "soft and
> >> dreamy" anyway.  But I didn't have sharp eyelashes and I 
> >> had to know
> >> why.  The old back produced a film bulge all the way down 
> >> the center
> >> of the frame of about 1mm.  I checked my other graflex 
> >> 6x9 back with
> >> the rollers and it was about .1mm.  My Mamiya RB back was
> >> essentially dead flat.  I really like the camera, so I'm 
> >> trying to
> >> figure out how to get the film flatter.  Might have to 
> >> add my own
> >> rollers.
> >
> > You might want to check with SK Grimes 
> > <http://www.skgrimes.com/>.  In
> > their "What's New! => New Now" section they mention that 
> > they are now
> > set up to add rollers to older Graflex 6x7 and 6x9 
> > rollfilm backs.  I
> > have no idea what they would charge for this, but they did 
> > some nice
> > work for me on a Lee Filter lens hood adapter and some 
> > other bits and
> > pieces a while ago.
> >
> > -- 
> > Brian Reynolds                  | "It's just like flying a 
> > spaceship.
> 
>     I have had problems with film flatness using sheet film 
> in a miniature Speed Graphic. The holders I have are old but 
> check out for proper film position. The film is from 
> Freestyle, one of their house brands. After repeated 
> checking of the holders and ground glass position in the 
> camera I came to the conclusion that this film does not sit 
> flat in the holders. I can partially confirm this by simply 
> observing the film, it does not sit against the plenum but 
> rather bows out in the center. I do have a late model roll 
> holder but its intended for use in a Graflok back and I will 
> have to modify the camera back a little to accept it. Most 
> Graflok accessories can be accomodated in the older Graphic 
> spring backs by replacing the ground glass panel with a 
> couple of spring brackets but in this case the holder itself 
> will not clear the edges of the back.
> 
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk@xxxxxxxxxxxxx 
> 
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Be Just And Fear Not

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