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08-13-2013, 10:07 AM   #1
Richm
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Telephoto Lens For K100 Super D

I have old telephoto lens 80 to 200 lens. But when I to use with my super D. When I turn on the camera, the LCD panel The AV blinks off and on
and just reads AV__ __ . I also purchased a sigma 70 to 300 lens and the same problem. The AV icon blinks on and off and nothing works. The crazy thing is the standard lens works just fine.

08-13-2013, 11:27 AM   #2
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Join Date: May 2009
Location: Twin Cities, MN
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QuoteOriginally posted by Richm Quote
I have old telephoto lens 80 to 200 lens. But when I to use with my super D. When I turn on the camera, the LCD panel The AV blinks off and on
and just reads AV__ __ . I also purchased a sigma 70 to 300 lens and the same problem. The AV icon blinks on and off and nothing works. The crazy thing is the standard lens works just fine.
You need to go into the custom setting and select 'enable aperture ring' - then they will work properly (also make sure to set the aperture ring to the A setting).
08-13-2013, 02:18 PM   #3
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Join Date: Mar 2010
Location: Frankfurt am Main
Posts: 1,094
You don't tell us the exact specification of the lenses.

If the lens(es) don't have an "A" setting, you can use it in "M" mode only, with stop down metering.

Of course, also the use of the aperture ring must be enabled somewhere in the settings menu.
As default Pentax delivers it disabled, but leaving it enabled generally does not do any harm.
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