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Canon 550d 50mm 1.8 lense question

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Nic Hawkins
Canon 550d 50mm 1.8 lense question
on Feb 17, 2011 at 9:19:02 pm

Hey everyone.

I recently just bought my self a canon 550d with a 50mm 1.8 lense. I dont know much about cameras and lenses however i did my research and this seemed to be a good buy for films and pictures.

Anyway... My question is that when filming on taking pictures is there anyway to turn off the depth of field so that i get a completly clear picture? Or would i need another lense to do that?

Thanks,

Nic Hawkins


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Brian DeViteri
Re: Canon 550d 50mm 1.8 lense question
on Feb 17, 2011 at 10:15:23 pm

First, you should try a DOF (Depth of Field) calculator:
http://www.dofmaster.com/dofjs.html
http://www.dofmaster.com/charts.html

What you're looking for is called HYPERFOCAL - too much for me to even attempt to explain here, but try these links for a start at understanding:
http://en.wikipedia.org/wiki/Hyperfocal_distance
http://gizmodo.com/#!5736155/54-hyperfocal-photos
http://www.cambridgeincolour.com/tutorials/hyperfocal-distance.htm



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