HD 35 macro - screw drive problem

exnito · 01-04-2016, 01:33 PM

Hello guys.

I have a problem with my HD 35 macro lens.
The screw drive is freely moving when you focus.
On the camera the change of focus is almost impossible,, only with force.

Is it possible to repair it by my self or does it need a service in a center.

You Tube

Thanks for your help

bertwert · 01-04-2016, 01:37 PM

Is your camera in MF mode when you are focusing on the camera?

The screwdrive and focus ring are 'linked' together, if the camera is in AF mode when you turn the focus ring you are turning the in-camera focus motor with force, this is potentially damaging the camera AF motor. Make sure the camera is in MF mode to focus manually. Also the 35 ltd does not have quick-shift.

Hope this helps!

Fogel70 · 01-04-2016, 01:52 PM

It seems like the quick shift clutch i not working, which might be difficult to fix yourself.

But setting the focus switch on the camera to manual focus will disengage the screw-drive motor from the lens, which let you focus manually. So it can be used as a temporary workaround for the problem.

enoeske · 01-04-2016, 01:55 PM

Originally posted by bertwert

Is your camera in MF mode when you are focusing on the camera?

The screwdrive and focus ring are 'linked' together, if the camera is in AF mode when you turn the focus ring you are turning the in-camera focus motor with force, this is potentially damaging the camera AF motor. Make sure the camera is in MF mode to focus manually. Also the 35 ltd does not have quick-shift.

Hope this helps!

The lens database lists the HD 35mm LTD as having quick-shift

bertwert · 01-04-2016, 01:57 PM

Originally posted by enoeske

The lens database lists the HD 35mm LTD as having quick-shift

Looking around, apparently it does. I was under the impression none of the limiteds (save the 20-40) had quickshift.

**jatrax** · 01-04-2016, 01:59 PM

The FA Limiteds do not. The DA limiteds do have quick shift.

robthebloke · 01-04-2016, 01:59 PM

Service! (Or return, depending on how new it is).

**BigMackCam** · 01-04-2016, 01:59 PM

Originally posted by bertwert

Looking around, apparently it does. I was under the impression none of the limiteds (save the 20-40) had quickshift.

The DA Limiteds have quick-shift; not so the FA Limiteds...

bertwert · 01-04-2016, 02:00 PM

Originally posted by jatrax

The FA Limiteds do not. The DA limiteds do have quick shift.

Originally posted by BigMackCam

The DA Limiteds have quick-shift; not so the FA Limiteds...

I stand corrected...

exnito · 01-04-2016, 02:36 PM

Thank you all for your advices.
The temporary setting to MF and focusing helps the issue. The lens behaves normally after setting to AF, but at some point it stuck again and cant be moved.
I will use it in MF mode and later send to service.

01-04-2016, 01:37 PM	#2
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Is your camera in MF mode when you are focusing on the camera? The screwdrive and focus ring are 'linked' together, if the camera is in AF mode when you turn the focus ring you are turning the in-camera focus motor with force, this is potentially damaging the camera AF motor. Make sure the camera is in MF mode to focus manually. Also the 35 ltd does not have quick-shift. Hope this helps! Last edited by bertwert; 01-04-2016 at 01:44 PM.

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01-04-2016, 01:52 PM	#3
Fogel70 Pentaxian Join Date: Sep 2009 Location: Stockholm, Sweden Photos: Albums Posts: 3,062	It seems like the quick shift clutch i not working, which might be difficult to fix yourself. But setting the focus switch on the camera to manual focus will disengage the screw-drive motor from the lens, which let you focus manually. So it can be used as a temporary workaround for the problem.

01-04-2016, 01:55 PM	#4
enoeske Veteran Member Join Date: Jul 2009 Location: Surprise, Az Photos: Gallery Posts: 2,136	Originally posted by bertwert Is your camera in MF mode when you are focusing on the camera? The screwdrive and focus ring are 'linked' together, if the camera is in AF mode when you turn the focus ring you are turning the in-camera focus motor with force, this is potentially damaging the camera AF motor. Make sure the camera is in MF mode to focus manually. Also the 35 ltd does not have quick-shift. Hope this helps! The lens database lists the HD 35mm LTD as having quick-shift

01-04-2016, 01:57 PM	#5
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by enoeske The lens database lists the HD 35mm LTD as having quick-shift Looking around, apparently it does. I was under the impression none of the limiteds (save the 20-40) had quickshift.

01-04-2016, 01:59 PM	#6
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	The FA Limiteds do not. The DA limiteds do have quick shift.

01-04-2016, 01:59 PM	#7
robthebloke Veteran Member Join Date: Sep 2013 Location: Sydney Photos: Albums Posts: 844	Service! (Or return, depending on how new it is).

01-04-2016, 01:59 PM	#8
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,702	Originally posted by bertwert Looking around, apparently it does. I was under the impression none of the limiteds (save the 20-40) had quickshift. The DA Limiteds have quick-shift; not so the FA Limiteds...

01-04-2016, 02:00 PM	#9
bertwert Veteran Member Join Date: Jun 2015 Location: Golden, BC Posts: 15,172	Originally posted by jatrax The FA Limiteds do not. The DA limiteds do have quick shift. Originally posted by BigMackCam The DA Limiteds have quick-shift; not so the FA Limiteds... I stand corrected...

01-04-2016, 02:36 PM	#10
exnito Junior Member Join Date: Feb 2014 Location: Martin Posts: 53 Original Poster	Thank you all for your advices. The temporary setting to MF and focusing helps the issue. The lens behaves normally after setting to AF, but at some point it stuck again and cant be moved. I will use it in MF mode and later send to service.