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SouthShoreRob · 12-27-2007, 02:03 PM

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

**Lowell Goudge** · 12-27-2007, 02:17 PM

you should enter the lens focal length multiplied by 1.7

exaample 50mm lens plus 1.7x AF TC enter 85mm

SouthShoreRob · 12-27-2007, 02:31 PM

Originally posted by Lowell Goudge

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?

Tom M · 12-27-2007, 02:36 PM

Pick the nearest..

SouthShoreRob · 12-27-2007, 02:42 PM

Originally posted by Tom M

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?

goubejp · 12-27-2007, 03:30 PM

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.

SouthShoreRob · 12-27-2007, 04:44 PM

Originally posted by goubejp

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

alib99 · 12-27-2007, 07:56 PM

If your images are crappy, it is never you. It is always the equipment.
Otherwise how will you justify a new lens purchase

Syb · 12-28-2007, 03:49 PM

@alib: sometimes one needs to justify taking photography classes, right?

Fl_Gulfer · 12-28-2007, 04:56 PM

Originally posted by alib99

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.

JCSullivan · 12-28-2007, 05:12 PM

Just a reminder Bob, you asked about primes but haven't asked what to do with a zoom.

12-27-2007, 02:03 PM	#1
SouthShoreRob Guest	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, 03:30 PM	#6
goubejp Veteran Member Join Date: Oct 2007 Location: France Photos: Albums Posts: 804	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.

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12-27-2007, 02:17 PM	#2
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,891	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 Guest	Originally posted by Lowell Goudge 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
Tom M Veteran Member Join Date: Aug 2007 Location: Lincoln Park, NJ Photos: Gallery Posts: 780	Pick the nearest..

12-27-2007, 02:42 PM	#5
SouthShoreRob Guest	Originally posted by Tom M 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, 04:44 PM	#7
SouthShoreRob Guest	Originally posted by goubejp 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
alib99 Forum Member Join Date: Nov 2007 Posts: 90	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
Syb Veteran Member Join Date: Aug 2007 Location: Near Utrecht, Netherlands Photos: Gallery Posts: 1,221	@alib: sometimes one needs to justify taking photography classes, right?

12-28-2007, 04:56 PM	#10
Fl_Gulfer Veteran Member Join Date: Jul 2007 Location: Florida Gulfer Photos: Albums Posts: 3,054	Originally posted by alib99 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
JCSullivan Veteran Member Join Date: Sep 2006 Location: Windsor, Canada Posts: 3,056	Just a reminder Bob, you asked about primes but haven't asked what to do with a zoom.

When using the 1.7 AF teleconverter...

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