Ghost images of sprocket holes

davide · 01-20-2011, 09:23 AM

Hi,

I got this problem on my last roll of film: you can see edges of one frame embedded in the middle of another see attached image. I developed using hewes reels in a steel tank. When I unwound the film it didn't appear to be wound on incorrectly. I may have overfilled the tank with chemicals. The film was expired so I added about a 45 seconds of dev time.

Attached Images

Vertex Ninja · 01-20-2011, 02:01 PM

My guess is that the film was really close together during development. During agitation, the sprocket holes act like little jets, increasing the flow of chemicals. Since the sprocket holes increase the flow, they also increase the amount of fresh chemicals that hit that part of the frame, causing it to develop to a higher density. Did this affect the whole roll or just the last 10 frames or so? That last bit of film likes to curl more, so it may have got closer to the next row over. Also since the holes appear lower down, it looks as if it might have jumped tracks.

davide · 01-20-2011, 08:00 PM

Hi Vertex,

This occurred throughout the roll. I think that the problem may have been a light leak while loading the film. I developed two more rolls today which don't appear to have the problem (haven't scanned them yet). The only difference is I made sure to keep the elastic in the arm holes of the changing bag really tight. It was a bit loose when I loaded the rolls that developed these issues.

Vertex Ninja · 01-20-2011, 11:48 PM

Originally posted by davide

Hi Vertex,

This occurred throughout the roll. I think that the problem may have been a light leak while loading the film. I developed two more rolls today which don't appear to have the problem (haven't scanned them yet). The only difference is I made sure to keep the elastic in the arm holes of the changing bag really tight. It was a bit loose when I loaded the rolls that developed these issues.

That could surely do it!

01-20-2011, 09:23 AM	#1
davide Junior Member Join Date: Jan 2008 Location: New York City Posts: 31	Ghost images of sprocket holes Hi, I got this problem on my last roll of film: you can see edges of one frame embedded in the middle of another see attached image. I developed using hewes reels in a steel tank. When I unwound the film it didn't appear to be wound on incorrectly. I may have overfilled the tank with chemicals. The film was expired so I added about a 45 seconds of dev time. Attached Images

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01-20-2011, 02:01 PM	#2
Vertex Ninja Inactive Account Join Date: May 2007 Location: Indianapolis, Indiana Posts: 652	My guess is that the film was really close together during development. During agitation, the sprocket holes act like little jets, increasing the flow of chemicals. Since the sprocket holes increase the flow, they also increase the amount of fresh chemicals that hit that part of the frame, causing it to develop to a higher density. Did this affect the whole roll or just the last 10 frames or so? That last bit of film likes to curl more, so it may have got closer to the next row over. Also since the holes appear lower down, it looks as if it might have jumped tracks.

01-20-2011, 08:00 PM	#3
davide Junior Member Join Date: Jan 2008 Location: New York City Posts: 31 Original Poster	Hi Vertex, This occurred throughout the roll. I think that the problem may have been a light leak while loading the film. I developed two more rolls today which don't appear to have the problem (haven't scanned them yet). The only difference is I made sure to keep the elastic in the arm holes of the changing bag really tight. It was a bit loose when I loaded the rolls that developed these issues.

01-20-2011, 11:48 PM	#4
Vertex Ninja Inactive Account Join Date: May 2007 Location: Indianapolis, Indiana Posts: 652	Originally posted by davide Hi Vertex, This occurred throughout the roll. I think that the problem may have been a light leak while loading the film. I developed two more rolls today which don't appear to have the problem (haven't scanned them yet). The only difference is I made sure to keep the elastic in the arm holes of the changing bag really tight. It was a bit loose when I loaded the rolls that developed these issues. That could surely do it!