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vertical lines on 4x5sheet

 
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snowcat



Joined: 15 Jun 2010
Posts: 5
Location: Brussels - Belgium

PostPosted: Tue Jun 22, 2010 1:47 pm    Post subject: vertical lines on 4x5sheet Reply with quote

Hi,
I made my first shots with a speed graphic. Unfortunately I discoverd 2 vertical lines on my processed sheet. They are at 1cm from each border. The sheet was not correctly inserted. The emulsion was at the wrong side. Would that be the reason? It was a Ilford delta 100 sheet. Some say it the lens board. Other say it's the holder? Couls somebody help me?
http://photo.net/photodb/photo?photo_id=11165316
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Les



Joined: 09 May 2001
Posts: 2682
Location: Detroit, MI

PostPosted: Tue Jun 22, 2010 2:32 pm    Post subject: Reply with quote

You've got some irregular dense area near the light trap as well (right side). Without seeing your set up with the film holder and dev tanks, it's hard to say, but I have to wonder if it isn't a processing error.

It can't be the lens board.
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pv17vv



Joined: 22 Dec 2001
Posts: 255
Location: The Ardennes, Belgium

PostPosted: Tue Jun 22, 2010 4:44 pm    Post subject: Reply with quote

Dear Compatriot ,
Since you put the sheet the wrong way, it is irrelevant to guess what happened.
Do another pic with the sheet correctly inserted and tell us.
Cheers.
G
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snowcat



Joined: 15 Jun 2010
Posts: 5
Location: Brussels - Belgium

PostPosted: Tue Jun 22, 2010 4:47 pm    Post subject: Graflex 4x5 sheet Reply with quote

Thank you guys! I'll start doing it the right way and w'ell see
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snowcat



Joined: 15 Jun 2010
Posts: 5
Location: Brussels - Belgium

PostPosted: Mon Sep 20, 2010 11:58 am    Post subject: vertical lines on film Reply with quote

Dear all,
I loaded the sheet in the right way... but then again, those lines appear. . Does any one have an idea?

http://photo.net/photodb/photo?photo_id=11662259

Pierre
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45PSS



Joined: 28 Sep 2001
Posts: 3216
Location: Mid Peninsula, Ca.

PostPosted: Mon Sep 20, 2010 4:13 pm    Post subject: Reply with quote

How was the film processed?
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The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU.
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1banjo



Joined: 16 Nov 2008
Posts: 478
Location: kansas

PostPosted: Tue Sep 21, 2010 12:56 am    Post subject: Reply with quote

hey Pierre
HOW BLACK is the inside of your camera some times if
you have some thing shinney on the inside you can get a
Ghost Reflection ! get out some flat black pant & go to work
on any thing shinney!
banjo
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pv17vv



Joined: 22 Dec 2001
Posts: 255
Location: The Ardennes, Belgium

PostPosted: Tue Sep 21, 2010 5:42 am    Post subject: Reply with quote

This is what I thought too.
The lines are much too thin to be a bellows/holder light leak IMHO.
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snowcat



Joined: 15 Jun 2010
Posts: 5
Location: Brussels - Belgium

PostPosted: Tue Sep 21, 2010 7:01 am    Post subject: Reply with quote

45PSS wrote:
How was the film processed?

It couldn't be a processing problem. Both sheets were processed by different persons.
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45PSS



Joined: 28 Sep 2001
Posts: 3216
Location: Mid Peninsula, Ca.

PostPosted: Tue Sep 21, 2010 8:23 am    Post subject: Reply with quote

Different film holders also? Same lens/shutter?

The lines seem too consistent to be reflections but I cannot rule that out either. In a darkroom with the light off, the focus panel removed, bellows fully extended and the or one of the lens/shutter used in the questionable photos attached put a 2 AA cell mini mag flash light or similar inside the bellows and look for light coming from around the shutter and or lens board. Next remove the lens board and reinstall the focus panel, install a film holder, retract the bellows only enough to easily shine the flash light around the edges of the back and film holder and check for any hint of light coming from around the back or film holder. Weak light leaks will look like dim yellow dots or streaks, strong ones will look white.

I have had pin holes in bellows put secondary exposures on the film. Light leaks do not always cause flair like streaks.
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snowcat



Joined: 15 Jun 2010
Posts: 5
Location: Brussels - Belgium

PostPosted: Wed Dec 22, 2010 10:59 am    Post subject: vertical lines... the answer Reply with quote

Dear collegues,

I think I found the reason of those vertical lines on the sheets. I used another lens and the lines didn't appear. They might have been some sort of reflection of the camera's rail through the lens I used.

Thank you all for your inputs in that difficult question.
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