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January 21st, 2004, 08:46 AM
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#1 |
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Regular Crew
Join Date: Feb 2003
Location: Louisville, KY
Posts: 48
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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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January 21st, 2004, 12:33 PM
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#2 |
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Major Player
Join Date: Jun 2003
Location: Oklahoma City, OK
Posts: 389
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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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Nicholi Brossia |
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January 21st, 2004, 12:43 PM
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#3 |
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Trustee
Join Date: Sep 2003
Location: Saguenay, Québec, Canada
Posts: 1,051
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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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Jean-Philippe Archibald http://www.jparchibald.com - http://www.vimeo.com/jparchib |
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