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12-27-2007, 02:03 PM   #1
SouthShoreRob
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When using the 1.7 AF teleconverter...

The camera recognizes the teleconverter is present, and presents me with the focal length menu. What should I choose here? The closest mathematical match to the real lens x 1.7? Will this in any way affect the overall autofocus?

Anything else I should know?

Thanks,

Rob

12-27-2007, 02:17 PM   #2
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you should enter the lens focal length multiplied by 1.7

exaample 50mm lens plus 1.7x AF TC enter 85mm
12-27-2007, 02:31 PM   #3
SouthShoreRob
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QuoteOriginally posted by Lowell Goudge Quote
you should enter the lens focal length multiplied by 1.7

exaample 50mm lens plus 1.7x AF TC enter 85mm
Okay, so then the FA 135mm x 1.7 is 229.5 so what do I do with that one?
12-27-2007, 02:36 PM   #4
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Pick the nearest..

12-27-2007, 02:42 PM   #5
SouthShoreRob
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QuoteOriginally posted by Tom M Quote
Pick the nearest..
Fine, I'll do that, thanks. But this brings me back to my earlier question. Does it then have some kind of effect on how the camera processes the auto focus / interprets the data?
12-27-2007, 03:30 PM   #6
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It affects the SR

The K10D asks the focal length to adjust the amount of shake reduction (which of course varies with focal length). This does not affect the autofocus. If you turn SR off, the K10D should not ask you to enter the focal length.
12-27-2007, 04:44 PM   #7
SouthShoreRob
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QuoteOriginally posted by goubejp Quote
The K10D asks the focal length to adjust the amount of shake reduction (which of course varies with focal length). This does not affect the autofocus. If you turn SR off, the K10D should not ask you to enter the focal length.
Fantastic, I wasn't sure if the two were correlated, but as you describe it - makes sense. The other relief then would be that if my images are crappy, I'll know it's all me
12-27-2007, 07:56 PM   #8
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If your images are crappy, it is never you. It is always the equipment.
Otherwise how will you justify a new lens purchase

12-28-2007, 03:49 PM   #9
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@alib: sometimes one needs to justify taking photography classes, right?

12-28-2007, 04:56 PM   #10
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QuoteOriginally posted by alib99 Quote
If your images are crappy, it is never you. It is always the equipment.
Otherwise how will you justify a new lens purchase
Thats what I keep telling my wife,, But she is wiseing up.
12-28-2007, 05:12 PM   #11
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Just a reminder Bob, you asked about primes but haven't asked what to do with a zoom.
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