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Alternative Imaging Methods
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Old January 21st, 2004, 08:46 AM   #1
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Let me throw a dumb question in the middle here...

In going the non-spinning glass route,
what is the primary difference between
using a homebuilt 'AgusTube' as opposed to
Canon's EF Adapter for the XL1?
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Old January 21st, 2004, 12:33 PM   #2
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The one major difference is depth of field. The larger 35mm image projected onto the ground glass (Agus's model) provides for a more shallow depth of field than the 1/3" ccds (1/3" = 8.5mm) of the Xl1. With the EF adaptor, you're just adding a lens (like looking through a window) but with the ground glass, you're actually looking at a much larger, flat surface projection of what's coming through the lens.
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Old January 21st, 2004, 12:43 PM   #3
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another difference is that with the Ef adaptor or any mechanical adaptors, you will have a magnification effect of 7.2X due to the difference of size between 35 mm film and 1/3 " CCD. By using a ground glass as a projection screen like the Mini35 or Agus's version, you preserve all the caracteristics of the lens used.
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