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<blockquote data-quote="Felisek" data-source="post: 348723" data-attributes="member: 23887"><p>There are a lot of smartphone apps and online calculators, like <a href="http://www.cambridgeincolour.com/tutorials/dof-calculator.htm" target="_blank">this one</a>.</p><p></p><p>PS. This is very instructive when you want to do macro photography. For example, using a 105 mm macro lens at the shortest focusing distance of 31 cm (parameters for Sigma 105), the depth of field at a modest f/5.6 is only... 0.1 cm! This is why people use very small apertures for macro. Still, closing the aperture to f/22 would increase the DOF to only 0.5 cm.</p></blockquote><p></p>
[QUOTE="Felisek, post: 348723, member: 23887"] There are a lot of smartphone apps and online calculators, like [URL="http://www.cambridgeincolour.com/tutorials/dof-calculator.htm"]this one[/URL]. PS. This is very instructive when you want to do macro photography. For example, using a 105 mm macro lens at the shortest focusing distance of 31 cm (parameters for Sigma 105), the depth of field at a modest f/5.6 is only... 0.1 cm! This is why people use very small apertures for macro. Still, closing the aperture to f/22 would increase the DOF to only 0.5 cm. [/QUOTE]
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