issue with K-5 iis & da 40mm xs

sram327 · 05-13-2016, 07:15 PM

Hi Pentaxians

I received my k-5 iis from Keh today and was happy with it by using da 70mm lens
Then I tried my 40mm xs which I purchased along with k-01

To my surprise, the aperture was not working on k-5 iis - and I was not able to take any picture.
I thought lens is not working - but when I used it on K-01 - it still works.
I know this sounds crazy - but I am going thro it
any help in this regard would be greatly appreciated.

I could be missing something

- Sram

Adam · 05-13-2016, 07:21 PM

Have you tried cleaning the contacts on the camera and lens?

sram327 · 05-13-2016, 07:37 PM

Thanks Adam - tried no luck - working on pentax k-01 but not on Pentax k-5 iis - it is recognizing ; but I am not able to click - something to do with setting - has put in "green" mode

**UncleVanya** · 05-13-2016, 08:54 PM

So what mode is the K-5 iis set to? When you mount the DA 70 - it doesn't change modes, but when you mount the DA 40 xs it does? Weird.

sram327 · 05-13-2016, 09:34 PM

Hi UncleVanya
k-01 is set to Auto mode and k-5 iis is set to Green mode, but the 40m xs works fine on k-01 - but not on k-5 iis (basically aperture gets locked) - i have cleaned all contacts of 40mm xs and also k-5 iis.

my 70mm lens works fine on both k-5 iis and k-01

not sure what am i missing

hcc · 05-13-2016, 11:10 PM - **1 Like**

A few years ago, I had a different, albeit not dissimilar issue with my DA 40mm xs. It was very tight and difficult to replace on my K-01, but it was fine on the K-7:

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/188994-why-...my-k-01-a.html

I am not sure if the discussions of the thread may help.

excanonfd · 05-13-2016, 11:10 PM - **1 Like**

The only thing I can think of is that maybe the aperture actuating lever on the DA 40/2.8 XS is slightly bent and while your K-01 can still catch the lever to actuate the diaphragm while the K-5IIs cannot. I admit it's a long shot but try comparing the aperture actuating lever on your lenses and see if they are identical or not.

sram327 · 05-13-2016, 11:18 PM

thanks for your inputs - hcc and excanonfd, I will try the suggestions and will post my findings

**UncleVanya** · 05-14-2016, 05:36 AM

For grins try another mode like Av and see what happens.

When you mount the 40 xs on the k5 iis, does the aperture stay closed or is it stuck open (i n green mode)?

sram327 · 05-14-2016, 09:24 AM

UncleVanya - no change even in AV mode, it stays closed (not at 2.8, more likely 8 or more)

sram327 · 05-14-2016, 10:27 AM

thank you excanonfd, you were spot on, the aperture lever on 40mm xs was bent and i came to know after comparing with lever on 70mm limited. Now can i use my bare hand and make it straight, and make it work - i dont remember bending or may be it was designed like that

Suggest how could i make it straight - but u guys are best - u found what problem was.....

---------- Post added 05-14-16 at 10:34 AM ----------

Sorry guys - could not control myself, used bare hands and straightened the lever a bit - Bingo - it works now...

Thanks again and again - you guys are best !!!!
I really cant imagine the experience you have got - is unmatchable.... :adore:

excanonfd · 05-14-2016, 11:12 AM - **2 Likes**

Glad it worked out for you and yes, using bare hands to straighten the bent lever is the safest way.

**UncleVanya** · 05-14-2016, 12:52 PM

Originally posted by excanonfd

Glad it worked out for you and yes, using bare hands to straighten the bent lever is the safest way.

Excellent detective work. Kudos!

05-13-2016, 07:15 PM	#1
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34	issue with K-5 iis & da 40mm xs Hi Pentaxians I received my k-5 iis from Keh today and was happy with it by using da 70mm lens Then I tried my 40mm xs which I purchased along with k-01 To my surprise, the aperture was not working on k-5 iis - and I was not able to take any picture. I thought lens is not working - but when I used it on K-01 - it still works. I know this sounds crazy - but I am going thro it any help in this regard would be greatly appreciated. I could be missing something - Sram

05-13-2016, 07:21 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	Have you tried cleaning the contacts on the camera and lens? 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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05-13-2016, 07:37 PM	#3
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34 Original Poster	Thanks Adam - tried no luck - working on pentax k-01 but not on Pentax k-5 iis - it is recognizing ; but I am not able to click - something to do with setting - has put in "green" mode

05-13-2016, 08:54 PM	#4
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,468	So what mode is the K-5 iis set to? When you mount the DA 70 - it doesn't change modes, but when you mount the DA 40 xs it does? Weird.

05-13-2016, 09:34 PM	#5
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34 Original Poster	Hi UncleVanya k-01 is set to Auto mode and k-5 iis is set to Green mode, but the 40m xs works fine on k-01 - but not on k-5 iis (basically aperture gets locked) - i have cleaned all contacts of 40mm xs and also k-5 iis. my 70mm lens works fine on both k-5 iis and k-01 not sure what am i missing

05-13-2016, 11:10 PM - 1 Like	#6
hcc Pentaxian Join Date: Nov 2009 Location: Brisbane, Australia Photos: Gallery \| Albums Posts: 4,005	A few years ago, I had a different, albeit not dissimilar issue with my DA 40mm xs. It was very tight and difficult to replace on my K-01, but it was fine on the K-7: https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/188994-why-...my-k-01-a.html I am not sure if the discussions of the thread may help.

05-13-2016, 11:10 PM - 1 Like	#7
excanonfd Veteran Member Join Date: Jan 2010 Location: Vancouver, BC Posts: 1,421	The only thing I can think of is that maybe the aperture actuating lever on the DA 40/2.8 XS is slightly bent and while your K-01 can still catch the lever to actuate the diaphragm while the K-5IIs cannot. I admit it's a long shot but try comparing the aperture actuating lever on your lenses and see if they are identical or not.

05-13-2016, 11:18 PM	#8
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34 Original Poster	thanks for your inputs - hcc and excanonfd, I will try the suggestions and will post my findings

05-14-2016, 05:36 AM	#9
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,468	For grins try another mode like Av and see what happens. When you mount the 40 xs on the k5 iis, does the aperture stay closed or is it stuck open (i n green mode)?

05-14-2016, 09:24 AM	#10
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34 Original Poster	UncleVanya - no change even in AV mode, it stays closed (not at 2.8, more likely 8 or more)

05-14-2016, 10:27 AM	#11
sram327 Junior Member Join Date: Jun 2011 Location: US Posts: 34 Original Poster	thank you excanonfd, you were spot on, the aperture lever on 40mm xs was bent and i came to know after comparing with lever on 70mm limited. Now can i use my bare hand and make it straight, and make it work - i dont remember bending or may be it was designed like that Suggest how could i make it straight - but u guys are best - u found what problem was..... ---------- Post added 05-14-16 at 10:34 AM ---------- Sorry guys - could not control myself, used bare hands and straightened the lever a bit - Bingo - it works now... Thanks again and again - you guys are best !!!! I really cant imagine the experience you have got - is unmatchable.... :adore:

05-14-2016, 11:12 AM - 2 Likes	#12
excanonfd Veteran Member Join Date: Jan 2010 Location: Vancouver, BC Posts: 1,421	Glad it worked out for you and yes, using bare hands to straighten the bent lever is the safest way.

05-14-2016, 12:52 PM	#13
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,468	Originally posted by excanonfd Glad it worked out for you and yes, using bare hands to straighten the bent lever is the safest way. Excellent detective work. Kudos!