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Search: Posts Made By: ac.smith
Forum: Studio Lighting, Flash & Other Mar 12, 2007, 5:54 PM
Replies: 9
Views: 685
Posted By ac.smith
A lens is its shortest physical length when...

A lens is its shortest physical length when focused at infinity. To focus at a closer distance the lens focusing mount (a helical, which means a screw thread, assembly) moves the optical part of the...
Forum: Studio Lighting, Flash & Other Mar 11, 2007, 9:35 PM
Replies: 9
Views: 685
Posted By ac.smith
You my choose to call this theory but we dealing...

You my choose to call this theory but we dealing with laws of physics. This is not where you're going to find a crease in the time space continuum.
Forum: Studio Lighting, Flash & Other Mar 7, 2007, 8:55 PM
Replies: 9
Views: 685
Posted By ac.smith
Your really looking to complicate your life. An...

Your really looking to complicate your life. An extension tube does nothing more than move the lens further away from the film/sensor plane. The built in focus mount does the same thing as we focus...
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