Tamron 70-300 not working after k50 firmware update

Andre771 · 09-13-2015, 03:39 AM

Hi guys..... I'm having a Pentax K-50 which worked with all my Pentax & third party lenses before.... Few days back I updated the camera firmware to latest version i.e. Version 1.02, now my Tamron 70-300 does not work with k-50...apparently the camera is not recognizing the lens.... It worked like a charm before... What should I do?

Adam · 09-13-2015, 03:46 AM

Originally posted by Andre771

Hi guys..... I'm having a Pentax K-50 which worked with all my Pentax & third party lenses before.... Few days back I updated the camera firmware to latest version i.e. Version 1.02, now my Tamron 70-300 does not work with k-50...apparently the camera is not recognizing the lens.... It worked like a charm before... What should I do?

The update probably reset your settings. Is the aperture ring set to "A"?

Andre771 · 09-13-2015, 03:51 AM

Originally posted by Adam

The update probably reset your settings. Is the aperture ring set to "A"?

Yes the mode is " Av" (aperture priority with automatic exposure).... That's the mode I shoot most of the time....

Adam · 09-13-2015, 04:56 AM

Originally posted by Andre771

Yes the mode is " Av" (aperture priority with automatic exposure).... That's the mode I shoot most of the time....

But you're not using the aperture ring, right? It has to be set to "A" for Av mode to work.

Since it sounds like that's the case try dismounting the lens and cleaning the contacts, and make sure that the AF/MF switch on the camera isn't in between the two settings.

Adam
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Andre771 · 09-13-2015, 11:37 AM

Originally posted by Adam

But you're not using the aperture ring, right? It has to be set to "A" for Av mode to work.

Since it sounds like that's the case try dismounting the lens and cleaning the contacts, and make sure that the AF/MF switch on the camera isn't in between the two settings.

If aperture ring means the dial that I use to increase / decrease the aperture value... It use to work fine earlier (don't know what is setting it to "A" means)... However the problem is now solved it seems.....all I did was unmount it for few hours,then shot with a Pentax lens, when I put back the Tamron again (camera is always on Av mode without changing any settings) the camera now recognizes it and also seems performing a bit faster under low light... Thanks a lot for your suggestions... Cheers☺

**stevebrot** · 09-13-2015, 02:31 PM

Originally posted by Andre771

If aperture ring means the dial that I use to increase / decrease the aperture value...

Glad you got your lens working again. As for aperture ring, I believe Adam was referring to a manual aperture ring near the base of the lens. I don't believe your lens is equiped that way, so no worry.

Steve

09-13-2015, 03:39 AM	#1
Andre771 New Member Join Date: May 2015 Posts: 14	Tamron 70-300 not working after k50 firmware update Hi guys..... I'm having a Pentax K-50 which worked with all my Pentax & third party lenses before.... Few days back I updated the camera firmware to latest version i.e. Version 1.02, now my Tamron 70-300 does not work with k-50...apparently the camera is not recognizing the lens.... It worked like a charm before... What should I do?

09-13-2015, 03:46 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,165	Originally posted by Andre771 Hi guys..... I'm having a Pentax K-50 which worked with all my Pentax & third party lenses before.... Few days back I updated the camera firmware to latest version i.e. Version 1.02, now my Tamron 70-300 does not work with k-50...apparently the camera is not recognizing the lens.... It worked like a charm before... What should I do? The update probably reset your settings. Is the aperture ring set to "A"? 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, 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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09-13-2015, 03:51 AM	#3
Andre771 New Member Join Date: May 2015 Posts: 14 Original Poster	Originally posted by Adam The update probably reset your settings. Is the aperture ring set to "A"? Yes the mode is " Av" (aperture priority with automatic exposure).... That's the mode I shoot most of the time....

09-13-2015, 04:56 AM	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,165	Originally posted by Andre771 Yes the mode is " Av" (aperture priority with automatic exposure).... That's the mode I shoot most of the time.... But you're not using the aperture ring, right? It has to be set to "A" for Av mode to work. Since it sounds like that's the case try dismounting the lens and cleaning the contacts, and make sure that the AF/MF switch on the camera isn't in between the two settings. 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, 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:

09-13-2015, 11:37 AM	#5
Andre771 New Member Join Date: May 2015 Posts: 14 Original Poster	Originally posted by Adam But you're not using the aperture ring, right? It has to be set to "A" for Av mode to work. Since it sounds like that's the case try dismounting the lens and cleaning the contacts, and make sure that the AF/MF switch on the camera isn't in between the two settings. If aperture ring means the dial that I use to increase / decrease the aperture value... It use to work fine earlier (don't know what is setting it to "A" means)... However the problem is now solved it seems.....all I did was unmount it for few hours,then shot with a Pentax lens, when I put back the Tamron again (camera is always on Av mode without changing any settings) the camera now recognizes it and also seems performing a bit faster under low light... Thanks a lot for your suggestions... Cheers☺

09-13-2015, 02:31 PM	#6
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Andre771 If aperture ring means the dial that I use to increase / decrease the aperture value... Glad you got your lens working again. As for aperture ring, I believe Adam was referring to a manual aperture ring near the base of the lens. I don't believe your lens is equiped that way, so no worry. Steve

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