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Re: [OM] Panorama Shots (QTVR) using OM-system

Subject: Re: [OM] Panorama Shots (QTVR) using OM-system
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Tue, 23 Sep 2003 08:04:33 -0400
EyeSee manual says:
you will be using macro close-up lenses (i.e. 60mm Micro Nikkor) or wide-angle zoom lenses with macro focus capabilty (9 - 18 inch distance) and 2 - 3 inch depth-of-field.
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For a depth of field of about 3" or more within the specified focusing range of 9-18" use the following lenses at f/16:
50mm focused at 18"  focus range = 16.6 - 19.7"
35mm focused at 13"  focus range = 11.5 - 14.9"
28mm focused at 12"  focus range = 10.1 - 14.8"
24mm focused at 10"  focus range =  8.2 - 12.7"

These calculations take into account the minimum focus distance of Olympus lenses of the specified focal length without use of extension tubes or close-up lenses. The distances specified are close to the minimum for each lens. If using other than Oly lenses check the minimum focus distance.

These DOF caculations assume you need 30 lines/mm. If you are making low res images for the web you can probably get away with less which would allow shooting at a larger aperture.

For a free DOF calculator see the Picture Window web site at: <http://www.dl-c.com/Temp/> and click on the DOF calculator download. The help file for this calculator also contains lots of information on film resolution and other helpful stuff.

Chuck Norcutt
Woburn, Massachusetts, USA




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