Vignetting on 665 Polaroid with 6x9 Arca

[sandy_sorlien]

Hi folks, You must be tired of all my Arca and Polaroid questions by now; please bear with me. I successfully shot a bunch of 665 negs with the 6x9 Arca, and thought all my problems were over, ha! Until today, when I was shooting a scene with extreme shift and moderate rise and kept getting vignetting in the upper right hand corner. I never had any vignetting with the same shot (I keep going back to the same building) on 6x9 rollfilm, even though I used even more extreme shift for those. So my conclusion is that it's not the lens coverage (65/5.6 Super Angulon), it's the fact that the 665 neg is actually bigger than the entire ground glass.

 

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It seems there is no solution except to avoid using much shift, or buying the Arca 4x5 rear standard; then I might as well use Type 55, and declare bankruptcy.

 

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Am I analyzing this situation correctly?

[glenn_kroeger]

Sandy: Indeed, the image area of the AS Polaroid back is

significantly larger than the image area of both a 5x9 rollfilm

holder and the groundglass. In most cases, except in your extreme

shift case, the extra room is usable.