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07-07-2009, 07:31 PM   #1
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Using M lens with K10D

I have a K10D and recently got a Pentax-M 28mm lens, k-mount lens.

I choose the 28mm SR setting, and press the AE-L before the shutter button, but I cannot get a meter reading, whether the diaphragm is stopped down or not.

The "allow f-stop ring" is activated. The diaphragm does close down when the shutter releases. If I set the right diaphragm - f-stop settings the exposure is right. But the camera gives me no clue as to the setting. Do I have to get a manual meter?

The manual gives no clue, a forum indicated that the meter should at least show a desired setting. ?????

07-07-2009, 07:51 PM   #2
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QuoteOriginally posted by dichro1 Quote
I have a K10D and recently got a Pentax-M 28mm lens, k-mount lens.

I choose the 28mm SR setting, and press the AE-L before the shutter button, but I cannot get a meter reading, whether the diaphragm is stopped down or not.

The "allow f-stop ring" is activated. The diaphragm does close down when the shutter releases. If I set the right diaphragm - f-stop settings the exposure is right. But the camera gives me no clue as to the setting. Do I have to get a manual meter?

The manual gives no clue, a forum indicated that the meter should at least show a desired setting. ?????
M mode?

Steve
07-07-2009, 08:09 PM   #3
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M mode should do it

You aperture will be on the lens itself, and will not show up on screen.

I think there might be a workaround for shorting out a contact on the lens to give you this information, but I have not tried this.
07-07-2009, 11:30 PM   #4
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QuoteOriginally posted by dichro1 Quote
I have a K10D and recently got a Pentax-M 28mm lens, k-mount lens.

I choose the 28mm SR setting, and press the AE-L before the shutter button, but I cannot get a meter reading, whether the diaphragm is stopped down or not.
First, AE-L doesn't do anything that I am aware of on the K10D when using manual lenses. The function performed by AE-L on older cameras is performed by the Green button on the K10D - it will stop down temporarily, take a meter reading, and set an appropriate shutter speed for you. But it won't display a meter reading for the current settings - to do that, use the DOF preview.

Check on the sticky thread in the beginner's forum for more on using manual lenses.

07-08-2009, 09:07 AM   #5
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QuoteOriginally posted by Marc Sabatella Quote
First, AE-L doesn't do anything that I am aware of on the K10D when using manual lenses. The function performed by AE-L on older cameras is performed by the Green button on the K10D - it will stop down temporarily, take a meter reading, and set an appropriate shutter speed for you. But it won't display a meter reading for the current settings - to do that, use the DOF preview.

Check on the sticky thread in the beginner's forum for more on using manual lenses.
https://www.pentaxforums.com/forums/pentax-beginners-corner-q/59272-shooting-...x-dslrs-f.html
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