change in DOF using 2X converter?

Started Mar 27, 2013 | Discussions thread
OP ladodger New Member • Posts: 15
Re: change in DOF using 2X converter?

I'm sorry I caused any problems, but I thought it was common knowledge that a converted would change the dof, I have read it several times in books, and to reply to the comment that you can't have 10 feet in front and 10 feet in back of a subject, with a 300mm lens,  I was really rounding off.  300mm lens, F/11, subject 100 ft. away, dof starts 10.2 ft. in front, and 12.8 ft. in back.

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