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Cameras, Lenses and Accessories: Discuss focusing prob...ive been having probs getting my D70 to focus properly, its only when i use a nikon 70-300 lens with ...
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Old 29-03-2007, 11:26   #1 (permalink)
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focusing prob

ive been having probs getting my D70 to focus properly, its only when i use a nikon 70-300 lens with a jessops 2x converter, i use this when shooting at air displays and i cant seem to get the camera to autofocus even when the plane is quite close and big in the frame, i have tried changing the cameras setting's but it doenst help, this is only intermittant on some occasions it is perfect first time,

any ideas would be appreciated

thanx
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Old 29-03-2007, 11:35   #2 (permalink)
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Re: focusing prob

I am not sure but I think putting a converter on your lens will make it's maximum aperture too small for AF to work.
I can only suggest you try manual focus!
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Old 29-03-2007, 11:40   #3 (permalink)
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Re: focusing prob

May be the contacts, probably on the converter. Try cleaning them - eraser's good but cloth will work

But, as Soup says, more than likely that the max aperture is too small, making image too dark for AF to work consistently
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Old 29-03-2007, 11:53   #4 (permalink)
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Re: focusing prob

It's the converter - as said, you lose two stops with a 2x tc and you lose AF.
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Old 29-03-2007, 14:30   #5 (permalink)
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Re: focusing prob

Seeing as you say it's only on 1 lens & works some times, it sounds like a contact problem ? What does it say in the manual for the 2x convertor re lens compatibility ?
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