Hi Roy, I had a quick go this morning with the 300mm + 2.0x and 1.4x, AF was not that good, a lot of hunting. I can't get my head round what the aperture/exposure is doing, I know the camera says f/5.6 but is this true or should this really be f/8 or are all the auto exposure settings wrong when stacking tc's?
Cheers
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Nick
www.jonrailton.com
http://nickr.zenfolio.com/
Canon EOS 1D MKIII | Canon EOS 30D | Canon 300mm f/2.8L IS | Canon 70-200mm f2.8L IS USM | Canon EF 16-35mm f/2.8 L II USM | Canon 1.4x II and 2.0x II Extenders (TC's).
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