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#21
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MicroPress 4x5 question
Flat lens boards on Graphics
I don't know if the flat board versions on the Graphics (Graphic View, Mini Speed, etc), or even my Busch Pressman C have different front standard light baffling than those with the stamped '3-D' bords. The hassle I have had with flat board on my Crown Graphic has been getting them the right size to fit under the board locks. I made & gave someone a flat aluminum one, painted black, with rounded corners doen on a belt sander, & he said he had no light leaks. I had suggested an inner section of foam core. Many people make a '2- step' flat one instead of the stamped deep ones. The slide locks really irritated me with the flat boards. If you make yourself replacement slide locks that are longer, you can run into the opposite problem from the lens board not staying locked...difficult to remove. |
#22
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MicroPress 4x5 question
"murrayatuptowngallery" wrote in message ups.com... Flat lens boards on Graphics I don't know if the flat board versions on the Graphics (Graphic View, Mini Speed, etc), or even my Busch Pressman C have different front standard light baffling than those with the stamped '3-D' bords. The hassle I have had with flat board on my Crown Graphic has been getting them the right size to fit under the board locks. I made & gave someone a flat aluminum one, painted black, with rounded corners doen on a belt sander, & he said he had no light leaks. I had suggested an inner section of foam core. Many people make a '2- step' flat one instead of the stamped deep ones. The slide locks really irritated me with the flat boards. If you make yourself replacement slide locks that are longer, you can run into the opposite problem from the lens board not staying locked...difficult to remove. The Graphic View uses metal lens boards which are other wise the same as the wooden ones for Anniversary Speed Graphics. Well, there _is_ a difference. The wooden boards are thick with a thiner border to fit the opening in the camera. This provides a light trap. The metal boards have constant thickness but have a raised boss around the holder which fits into the front standard and provides the same sort of light trap. However, the center of the board is thinner so it can take some lenses with retaining rings or the flange on the back that could not fit on a wood board without undercutting. For 4x5 cameras 4x4 inch boards of the Graphic wood type will fit the Graphic View, the Burke & James press camera, and the Calumet CC-400. However, the CC-400 boards will not fit into the other cameras because it has a sliding lock on both top and bottom and no taper on one edge. The lack of a taper prevents the edge of the these boards from fitting into the bottom of a Speed Graphic or Graphic view. Calumet boards are flat, thin, and have a raised boss around the edge but a much shallower one than the Graphic View board. I think the rounded corners you mention must be for a Pacemaker Graphic. These use a completly different design made of stamped sheet metal with a bent down rim around the edges. The rim forms a light trap. These boards will not fit other cameras without an adaptor. -- --- Richard Knoppow Los Angeles, CA, USA |
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