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Wide-Angle
Do you set hyperfocal or focus a different way?
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<blockquote data-quote="moony16" data-source="post: 282343" data-attributes="member: 23104"><p>You can download a Hyperfocal Distance calculator here: <a href="http://www.dofmaster.com/dofjs.html" target="_blank">Online Depth of Field Calculator</a> which tells you precisely where to set focus: you plug in aperture, body, focal length & the distance is given to you.</p><p>Or, if you are a mathophile, you can do the math yourself with this:</p><p></p><p>For the first definition,</p><p> <img src="http://upload.wikimedia.org/math/4/6/a/46a03e9bd0c3e710db829d665b3b4410.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> where</p><p> <img src="http://upload.wikimedia.org/math/c/1/d/c1d9f50f86825a1a2302ec2449c17196.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> is hyperfocal distance <img src="http://upload.wikimedia.org/math/8/f/a/8fa14cdd754f91cc6554c9e71929cce7.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> is <a href="http://en.wikipedia.org/wiki/Focal_length" target="_blank">focal length</a> <img src="http://upload.wikimedia.org/math/8/d/9/8d9c307cb7f3c4a32822a51922d1ceaa.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> is <a href="http://en.wikipedia.org/wiki/F-number" target="_blank">f-number</a> (<img src="http://upload.wikimedia.org/math/c/c/9/cc90624f4e3643d7e8505fdb13d31057.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> for aperture diameter <img src="http://upload.wikimedia.org/math/f/6/2/f623e75af30e62bbd73d6df5b50bb7b5.png" alt="" class="fr-fic fr-dii fr-draggable " style="" />) <img src="http://upload.wikimedia.org/math/4/a/8/4a8a08f09d37b73795649038408b5f33.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> is the <a href="http://en.wikipedia.org/wiki/Circle_of_confusion" target="_blank">circle of confusion</a> limit For any practical f-number, the focal length is insignificant in comparison with the first term, so that</p><p> <img src="http://upload.wikimedia.org/math/5/8/e/58ee94d03accdb2cf4e2ffd49d71cf95.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Hyperfocal distances are particularly important in Ultra wide angle photograhpy.</p><p></p><p>JT</p><p></p><p>Finally, you can download a chart, with an x & y axis which is handy because it lists all possible settings for the hyperfocal distance based upon your body--just Google a search for one and print it out--I carry 1 with me as needed.</p></blockquote><p></p>
[QUOTE="moony16, post: 282343, member: 23104"] You can download a Hyperfocal Distance calculator here: [URL="http://www.dofmaster.com/dofjs.html"]Online Depth of Field Calculator[/URL] which tells you precisely where to set focus: you plug in aperture, body, focal length & the distance is given to you. Or, if you are a mathophile, you can do the math yourself with this: For the first definition, [IMG]http://upload.wikimedia.org/math/4/6/a/46a03e9bd0c3e710db829d665b3b4410.png[/IMG] where [IMG]http://upload.wikimedia.org/math/c/1/d/c1d9f50f86825a1a2302ec2449c17196.png[/IMG] is hyperfocal distance [IMG]http://upload.wikimedia.org/math/8/f/a/8fa14cdd754f91cc6554c9e71929cce7.png[/IMG] is [URL="http://en.wikipedia.org/wiki/Focal_length"]focal length[/URL] [IMG]http://upload.wikimedia.org/math/8/d/9/8d9c307cb7f3c4a32822a51922d1ceaa.png[/IMG] is [URL="http://en.wikipedia.org/wiki/F-number"]f-number[/URL] ([IMG]http://upload.wikimedia.org/math/c/c/9/cc90624f4e3643d7e8505fdb13d31057.png[/IMG] for aperture diameter [IMG]http://upload.wikimedia.org/math/f/6/2/f623e75af30e62bbd73d6df5b50bb7b5.png[/IMG]) [IMG]http://upload.wikimedia.org/math/4/a/8/4a8a08f09d37b73795649038408b5f33.png[/IMG] is the [URL="http://en.wikipedia.org/wiki/Circle_of_confusion"]circle of confusion[/URL] limit For any practical f-number, the focal length is insignificant in comparison with the first term, so that [IMG]http://upload.wikimedia.org/math/5/8/e/58ee94d03accdb2cf4e2ffd49d71cf95.png[/IMG] Hyperfocal distances are particularly important in Ultra wide angle photograhpy. JT Finally, you can download a chart, with an x & y axis which is handy because it lists all possible settings for the hyperfocal distance based upon your body--just Google a search for one and print it out--I carry 1 with me as needed. [/QUOTE]
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Do you set hyperfocal or focus a different way?
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