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Teleconvertors and depth of field

Aubrey

Limassol, CY
234 posts

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Aubrey Silver Member Nikonian since 07th Jun 2007
Thu 20-Sep-12 08:09 PM | edited Thu 20-Sep-12 08:10 PM by Aubrey

Using the new DOF Nikonian calculator how does one calculate depth of field as follows with a
D300
Nikon 300 mm f/4
TC14
Easy with 300 mm alone... but with TC
Does one use f/4 or f/5.6 with 420 mm (300*1.4)?
I understand that we loose 1 stop of light with the TC, but has the aperture size been reduced also, and so should be use 5.6. If the aperture remains the same then f/4 should be used?

Your thoughts...
Thanks,
Aubrey


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