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Linhof Technika IV back
I recently purchased an early Technika IV (s/n 63089). I noticed that
with my longest lens (210 mm) the corners of the image were getting rounded off on the negative. I took a closer look at the camera, and sure enough, the cutout in the camera back behind which the film sits has rounded corners. If I put my film holder (I use Fidelity Elite holders) in the back and look through the front standard at it, I can see that the rounded corners do indeed impinge on the film image area. I've never heard of this 'feature' of the Technika camera. So, my questions. Are these rounded corners on all Technika IV's? The back on this one looks unmodified, so I assume it's as originally manufactured. And what do people do about this problem (other than just accepting it)? It looks like it would be very difficult to file the rounded corners out without removing the bellows first - and the bellows appear to be glued on, so I'm reluctant to attempt that. Thanks - Rob |
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wrote in message
ups.com... I recently purchased an early Technika IV (s/n 63089) [...] I'm sure Bob Solomon (HP Marketing) can help with the serial numbers and age. I noticed that with my longest lens (210 mm) the corners of the image were getting rounded off on the negative. Which 210mm lens? How much rounding (vignetting)? So, my questions. Are these rounded corners on all Technika IV's? The back on this one looks unmodified, so I assume it's as originally manufactured. And what do people do about this problem (other than just accepting it)? It looks like it would be very difficult to file the rounded corners out without removing the bellows first - I'm baffled by your observations. The 'roundness' seen from the film side is due to the rotating back track. If you remove those corners it won't obviate vignetting, but it will destroy the back. Regardless, the exposed area of the film in the holder is not effected. and the bellows appear to be glued on, so I'm reluctant to attempt that. Don't go there. |
#5
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wrote in message
ups.com... I recently purchased an early Technika IV (s/n 63089) [...] I'm sure Bob Solomon (HP Marketing) can help with the serial numbers and age. I noticed that with my longest lens (210 mm) the corners of the image were getting rounded off on the negative. Which 210mm lens? How much rounding (vignetting)? So, my questions. Are these rounded corners on all Technika IV's? The back on this one looks unmodified, so I assume it's as originally manufactured. And what do people do about this problem (other than just accepting it)? It looks like it would be very difficult to file the rounded corners out without removing the bellows first - I'm baffled by your observations. The 'roundness' seen from the film side is due to the rotating back track. If you remove those corners it won't obviate vignetting, but it will destroy the back. Regardless, the exposed area of the film in the holder is not effected. and the bellows appear to be glued on, so I'm reluctant to attempt that. Don't go there. |
#6
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Thanks, that's very helpful - much appreciated!
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