[rollei_list] Re: Planar 2.8 coverage
- From: "Richard Sintchak" <rich815@xxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Wed, 3 Oct 2007 17:29:12 -0700
Thanks for the reply Dennis. Ok, so assuming it may be due to agitation
what technique do people recommend? I try to invert and twist at about the
same time, about 4-5 times every 30 seconds, sometimes every minute. Am I
over-agitating perhaps and creating too much flow on the edges of the reels?
Should I not invert and instead just sort of twirl?
Richard S.
On 10/3/07, dpurdy@xxxxxxxxxxxxxxx <dpurdy@xxxxxxxxxxxxxxx> wrote:
>
> What I saw on eroustam's image was even plus density coming in from both
> sides. I have seen this many times from development on reels when there
> is not even developer exchange across the film. There is more fresh
> developer on the outside of the reels after agitation than on the inside
> of the reels. It is a very consistant progression of density from outside
> to inside. Light leaks would be actually light streaking across the film
> and would be very inconsistant due to all the variables. It should be
> more on one side than another and you probably could see some paper
> texture. Also light leaking in loose rolls is generally located right at
> the edges and then falls off really quickly where as on eroustams film it
> was a gradual even fall off from edge to center.
> But you never know for sure till you fix it.
> Dennis
> > So it seems from comments in this thread that I may be completely wrong
> > about light leaks from a loose roll or from the camera's edges allowing
> > light leaking in? That's what I always thought it was since I got this
> > problem on negs with my 2.8E Planar and 3.5E3 Xenotar (both real ugly
> > users)
> > but negs from my pristine 2.8C Xenotar and my Hasselblads do not have
> > this....thus I thought it must be a camera issue and not processing
> since
> > I
> > often process negs from a mix of cameras and do not see this across all
> > the
> > negs. But people seem pretty set that it's a processing issue. But my
> > facts seem to fly in the face of that.....
> >
> > Comment anyone? Is there a reason it's NOT a loose roll or edge light
> > leaks
> > in the camera?
> >
> > Richard S.
> > San Francisco
> >
> > See my Commute Photo Blog!
> > http://shootingonthefly.blogspot.com/
> >
> > My Flickr Page
> > http://www.flickr.com/photos/rich8155/
> >
> >
> >
> > On 10/3/07, Richard Knoppow <dickburk@xxxxxxxxxxxxx> wrote:
> >>
> >>
> >> ----- Original Message -----
> >> From: "ERoustom" <eroustom@xxxxxxxxxxx>
> >> To: <rollei_list@xxxxxxxxxxxxx>
> >> Sent: Wednesday, October 03, 2007 5:05 AM
> >> Subject: [rollei_list] Re: Planar 2.8 coverage
> >>
> >>
> >> > Thanks! This was my first roll in Rodinal, and since
> >> > Ilford's spec sheet gave one time, and Rodinal gave
> >> > another, I split the difference, so maybe not enough
> >> > time. and maybe back to 5 seconds every 10 minutes. I use
> >> > a stainless steel tank, agitating for the first 10
> >> > seconds of each minute. Ilftoec HC never gave me this
> >> > problem, but the grain is much much finer with Rodinal.
> >> >
> >> > I wonder though about how tightly the camera is holding
> >> > the film. This is the same roll that gave me the strange
> >> > light leak across frames.
> >> >
> >> > Thanks again all.
> >> >
> >> > Elias
> >> >
> >> Curious about the grain. I've never used Ilfotec HC,
> >> which is similar to Kodak HC-110 but would expect it to have
> >> somewhat finer grain than Rodinal. I've used Rodinal mostly
> >> for sheet film and have never had any problems with it but I
> >> generally use finer grain developers in tanks. I think the
> >> main thing with tanks is to have a long enough development
> >> time to average out irregularities in agitation. However, if
> >> there are surge effects in the tank they are likely to be
> >> the same even if the time is increased. The most common
> >> surge marks in inversion type tanks are increased
> >> development at the edges of the film due to turbulent flow
> >> in the interstices of the reels, and sprocket hole marks due
> >> to turbulent flow through these holes, also causing a
> >> localized increase in development.
> >> If you find the problem _is_ due to surging I can only
> >> suggest using a different type of reel or rotating the tank
> >> along with inverting it. I was taught this trick long ago
> >> and its become a habit.
> >>
> >> ---
> >> Richard Knoppow
> >> Los Angeles, CA, USA
> >> dickburk@xxxxxxxxxxxxx
> >>
> >> ---
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>
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