Straight Line Light Leak on Verticals

[gbenaim]

Hi all,

I've gotten a new to me light leak, was hoping you could help me diagnose it. It's a straight thin line of higher density one the darkslide side when shooting verticals, so it's an 8 inch line just inside the edge of the exposed area. This has happened only w my plastic holders so far, and I use both wood and plastic. When shooting verticals, I insert the holder such that I pull the darkslide down, not up, leaving the baffle less exposed to direct light. I use a Master view, fwiw. Have at it, light leak experts!

GB

 

[Ian Grant]

A scan would be useful. It could be the light trap on the film holder, could also be a pinhole in your bellows.

Ian

 

[gbenaim]

Hi Ian,

It's happened on 3 separate holders, all plastic, bellows are light-tight.

 

[Ian Grant]

That seems to rule out the film holders. What about a leak when your loading/unloading the film, or during processing ?

You do need to do a thorough test to make sure there's not a light leak somewhere on the camera. The bellows might look light tight, you can't always see pinholes.

Ian

 

[gbenaim]

I'll try that, Greg, but why would it happen only on verticals? I've shot several hundred sheets, it's not a new-to-me set-up.

 

[johnnywalker]

If it's only on the verticals and the same holders are ok on horizontals, the leak might be where the rotating back meets the camera?