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**Pepe Guitarra** · 11-11-2011, 03:56 PM

I have two Pentax Kx and one K5. I use many manual M, K, and Supertak lenses in my Kxs. I stop down with the green button, or the +/- button and every thing has been fine with my Kx. The Supertaks are used in Av mode with no problem. However, I would like to know how to use the M and K lenses on the K5. Is there a green button (that can be assigned a function?, I can see a green button, but do not know what to do with it. I have not found info on the manual. I appreciate your input. Thanks, Pepe.

Adam · 11-11-2011, 04:11 PM

Same as on your K-x:
https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html

Frank B · 11-11-2011, 06:27 PM

I thought I read someplace that the K-5 had some sort of "improved funtionality" (whatever that means) with non-A lenses, but I've not been able to find info on that anywhere. Does anyone else remember seeing that, and maybe know what it meant, or was I just hallucinating?

sterretje · 11-11-2011, 10:16 PM

The default behaviour of the green button in M mode is to set a 'correct' shutterspeed for the aperture that you selected on the lens taking ISO into account. It closes the aperture and measures after which the shutterspeed is set.

11-11-2011, 03:56 PM	#1
Pepe Guitarra Site Supporter Join Date: Nov 2010 Location: California Photos: Gallery \| Albums Posts: 2,223	M and K lenses, how to use them on the K5? I have two Pentax Kx and one K5. I use many manual M, K, and Supertak lenses in my Kxs. I stop down with the green button, or the +/- button and every thing has been fine with my Kx. The Supertaks are used in Av mode with no problem. However, I would like to know how to use the M and K lenses on the K5. Is there a green button (that can be assigned a function?, I can see a green button, but do not know what to do with it. I have not found info on the manual. I appreciate your input. Thanks, Pepe.

11-11-2011, 04:11 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,609	Same as on your K-x: https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-meter...k-x-k-7-a.html Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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11-11-2011, 06:27 PM	#3
Frank B Senior Member Join Date: Aug 2009 Location: San Diego, California Posts: 149	I thought I read someplace that the K-5 had some sort of "improved funtionality" (whatever that means) with non-A lenses, but I've not been able to find info on that anywhere. Does anyone else remember seeing that, and maybe know what it meant, or was I just hallucinating?

11-11-2011, 10:16 PM	#4
sterretje Veteran Member Join Date: Dec 2008 Location: Roodepoort, South Africa Photos: Gallery \| Albums Posts: 3,561	The default behaviour of the green button in M mode is to set a 'correct' shutterspeed for the aperture that you selected on the lens taking ISO into account. It closes the aperture and measures after which the shutterspeed is set.

M and K lenses, how to use them on the K5?

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