Being at the very end of the roll that frame probably got handled a bit
more than the rest of the roll, sniping off the spool and all. maybe a
little finger grease got on it. I do not use stop bath - my protocol is
to dump the developer, fill the tank with water, agitate, dump, fill
again and let sit for a few minutes. I figure that will bring up the
less dense areas of film a bit. Then I fix and wash. I appreciate your
insights - you have a lot more darkroom experience that I do. Ted Serios
has nothing to fear from me...
MCC
On 10/24/2011 1:48 PM, Paul Stenquist wrote:
It could also have been a piece of dirt that prevented that part of the image
from being fixed. After rinsing, when exposed to the light, it would have
continued to develop. In some thirty years of darkroom work, I encountered a
number of weird effects that were undoubtedly the results of bad chemistry or
film imperfections. Lots of opportunity for things to go wrong.
On Oct 24, 2011, at 12:57 PM, Mark C wrote:
Thanks, Paul - In the case of HC-110 that would have to be a drop of liquid
concentrate, but that does sound like a likely explanation.
Mark
On 10/24/2011 7:12 AM, Paul Stenquist wrote:
Hi Mark,
I think a light leak that tight and tidy is unlikely. it would probably be more
diffuse. I'd bet on something going wrong with the chemistry, perhaps a few
grains of undissolved developer that stuck to the film but were eventually
washed off.
Paul
On Oct 23, 2011, at 10:40 PM, Mark C wrote:
Oops - put the first link in twice. Here's the second:
http://www.calarti.com/peso/2011-0434_tu2.jpg
On 10/23/2011 10:38 PM, Mark C wrote:
Submitted for your perusal... here's a photo I snapped a week ago in a state
park near Augusta, Michigan. Notice the globular lights on the left side of the
frame and what appears to be light shining towards the center of the frame:
http://www.calarti.com/peso/2011-0435_tu.jpg
Here's the frame taken immediately before that one:
http://www.calarti.com/peso/2011-0435_tu.jpg
Yeah - I drew the circle on the second one to show where the lights were on the
first. At first I thought that this must be lens flare of some sort, but I'm
certain the sun was behind me. The trail proceeds to the north and while it
twists and turns a bit as it follows the edge of a sinkhole lake, it never
strays more than from NW to NE. The shot was taken around 2 PM local time last
Saturday, which I reckon to be about 11:30 true local time - which would put
the sun in the south-southeast area. Behind the bushes that the light is
emanating from is a big empty field - just soybean stubble for a couple hundred
yards.
Taken on an Mz-S with an FA 20-35 f4 zoom, #29 deep red filter, lens hood in
place. No Photoshopping other than contrast and tone adjustments. The photo
was shot on Neopan 400 pushed to ISO 16000 and developed in HC-110 Dil B. I
checked the negatives and there are no developer / agitation marks. The lights
are in the negative as areas of density. The area of density does extend beyond
the frame, into the sockets on the film. This is the last frame on the role and
there are no kinks or folds on it (or elsewhere on the roll...)
I'm guessing a pin-hole light leak in my changing bag? Any one else ever get
this sort of thing?
Mark C.
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