Issue with 4x5 camera

[tdab17]

This is my first time with a 4x5. I am getting these white bars across my film. Any ideas what the problem could be?

 

[dxqcanada1]

What specific camera is this ?

 

[dxqcanada1]

and lens

 

[tdab17]

It's a Tachihara Hope with a Topcor 5.6/150 lens.

 

[dxqcanada1]

Hmm, possible light leak from lens board ?

 

[ac12]

Odd

• It is not in a consistent place on the film.
• The shape is consistent.
  
• The shape straight side on one side and curve on the other, is interesting.

Processing

• Did you process the film yourself or send it out.
• If you did it yourself, what process; dip/dunk in a tank, drum processor, or ???

 

[480sparky38 37]

Are we looking at the negatives? Or prints made from said negatives?

If we're looking at the negs, the 'light areas' cannot be light leaks. Light leaks make negs darker, not lighter.

If these are prints, then you've got a light leak somewhere. My guess is the bellows. It appears the focus affects where on the film it ends up at. Have you checked the bellows for light-tight? Put a bright flashlight inside the extended bellows while you're in a darkened room and look for leaks. I'd say it's where the bellows is mated up to the standard.

My next culprit would be it's coming in around the lens board.

 

[Derrel]

These appear to be B&W prints made from film that has suffered light leakage; my guess is that the film was light-fogged in the box the film came in, in a darkroom or changing-bag incident. But the liught leak could have happened at some other place, but it seems to be "in the middle" of the film sheets, and there's a curvature, as if the light leaked in throigh an opening in the black,light-proofing paper that is wrapped around the film inside the storage box.

 

[480sparky38 37]

I was able to pretty quickly replicate it with my own 4x5.

I loosened the bellows where it attaches to the rear standard. I recreated the curved portion by placing a metal lens hood on the standard.

This was done by shining a flashlight on the TOP of the standard. Your images show the effect inverted.

So I suspect your bellows is not properly attached to the BOTTOM of the rear standard.

 

[480sparky38 37]

Will we ever know what the real problem was?

 

[ac12]

Will we ever know what the real problem was?

Agree.
It would be nice to get closure.

 

[ac12]

Will we ever know what the real problem was?

Agree
It would be nice to get closure.

 

[Tim Tucker 2]

It’s a double exposure. If you look then you will see that the fogged part is actually a repeat of the image in the top part of the dark slide. The second image is focussed so must have been light passing through the lens. It suggests that the dark slide was moved between exposures so may have happened when loaded or removed from the camera. Though how it was achieved I have no idea.