AF/MF switch on DA*300

sjovolde · 12-01-2020, 08:28 PM

Hi
I just received my DA*300 that I had on order for quite a while. It seems to me that the AF/MF switch on the lens is acting up. This is the first lens with this feature I have. I’m using a K3. If I flip the switch to MF it switches over ok, but when I return the switch to the AF position it doesn’t go back to auto focus. After a short time it will go back into auto focus but I don’t think it should take this long. I wondered if this could be a firmware issue, couldn’t really see it since the camera came out after the lens, but I did upgrade the camera to the most recent firmware. Has anyone else had an issue like this, if so is this a common problem with these lenses.

Thanks
Evan

**ramseybuckeye** · 12-01-2020, 08:32 PM

Are you also changing the AF/MF on the body?

Also make sure the switch is fully in position, it can stop out of either position.

sjovolde · 12-01-2020, 08:38 PM

Originally posted by ramseybuckeye

Are you also changing the AF/MF on the body?

Also make sure the switch is fully in position, it can stop out of either position.

No I’m only changing it on the lens. I push the switch all the way forward until it stops. That should be the AF position i would think.

---------- Post added 12-01-20 at 09:40 PM ----------

Sometimes it will go into AF and then switch back to MF after a while with out moving the switch. I’m starting to wonder if the switch is faulty.

**UncleVanya** · 12-01-2020, 09:34 PM

It is also possible the sdm is bad. When it goes into manual focus does it behave any different than af except it doesn’t focus?

sjovolde · 12-01-2020, 09:51 PM - **1 Like**

Not that I’ve noticed. It just goes into MF as far as I can tell.

sjovolde · 12-02-2020, 04:37 AM

Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved.

**termy** · 12-02-2020, 06:56 AM

Originally posted by sjovolde

Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved.

Am wondering.

I noticed some DA*300 comes on the old box (which is black and has green and red etc colours).

And some DA*300 comes in the box with new design, the silverish grey box with a few big 'K' around it.

Does it mean the ones in that new silverish grey box, supposedly has the 'new' SDM motor? (And supoosedly, lesser chance of it going haywire?)

sjovolde · 12-02-2020, 07:07 AM

This one was in the silver box, I picked it up yesterday. There wasn’t one in Canada so they had to order it in. It took quite a while to come in. I’m hoping I don’t have to send it in and get it fixed.

**UncleVanya** · 12-02-2020, 07:20 AM

Originally posted by sjovolde

Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved.

Even if the vast majority are fixed there could be a bad part slipping by quality control. I don’t know that this is the case, usually sdm failure would emit squeaks and squeal a bit and slow down. I asked the question but I can’t say it’s the most likely problem. Control circuits in the lens could be bad - it is difficult know. I personally would return the lens or send for repairs.

sjovolde · 12-02-2020, 07:24 AM

The lens makes a clicking sound when it acquires focus. Is that normal.

**UncleVanya** · 12-02-2020, 07:29 AM

Originally posted by sjovolde

The lens makes a clicking sound when it acquires focus. Is that normal.

Not that I’ve seen. It should make very slight sounds. The noises are more like a tiny whine than clicks. It’s hard to describe. If possible maybe take video with audio of the lens focusing and clicking and post it.

sjovolde · 12-02-2020, 07:32 AM

It’s not really a click more a faint sound. I’ll see if i can post a video somehow. Thanks for the info. I’m going to call the camera shop I deal with and see what they want to do about it. It’s brand new maybe they can get in another and swap it for me.

**termy** · 12-02-2020, 07:34 AM

Hopefully, they do a one for one replacement for you.

brand new just came in to you and something like this pop.

Should replace.

sjovolde · 12-02-2020, 09:15 AM - **1 Like**

Just talked to the camera shop I deal with. They are getting me a new lens no problem. Thanks for the info and help.

**ramseybuckeye** · 12-02-2020, 04:09 PM

Good result, it should not make that noise

12-01-2020, 08:28 PM	#1
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58	*AF/MF switch on DA300** Hi I just received my DA*300 that I had on order for quite a while. It seems to me that the AF/MF switch on the lens is acting up. This is the first lens with this feature I have. I’m using a K3. If I flip the switch to MF it switches over ok, but when I return the switch to the AF position it doesn’t go back to auto focus. After a short time it will go back into auto focus but I don’t think it should take this long. I wondered if this could be a firmware issue, couldn’t really see it since the camera came out after the lens, but I did upgrade the camera to the most recent firmware. Has anyone else had an issue like this, if so is this a common problem with these lenses. Thanks Evan

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12-01-2020, 08:32 PM	#2
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,291	Are you also changing the AF/MF on the body? Also make sure the switch is fully in position, it can stop out of either position.

12-01-2020, 08:38 PM	#3
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	Originally posted by ramseybuckeye Are you also changing the AF/MF on the body? Also make sure the switch is fully in position, it can stop out of either position. No I’m only changing it on the lens. I push the switch all the way forward until it stops. That should be the AF position i would think. ---------- Post added 12-01-20 at 09:40 PM ---------- Sometimes it will go into AF and then switch back to MF after a while with out moving the switch. I’m starting to wonder if the switch is faulty.

12-01-2020, 09:34 PM	#4
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,398	It is also possible the sdm is bad. When it goes into manual focus does it behave any different than af except it doesn’t focus?

12-01-2020, 09:51 PM - 1 Like	#5
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	Not that I’ve noticed. It just goes into MF as far as I can tell.

12-02-2020, 04:37 AM	#6
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved.

12-02-2020, 06:56 AM	#7
termy Loyal Site Supporter Join Date: Jan 2019 Posts: 1,154	Originally posted by sjovolde Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved. Am wondering. I noticed some DA300 comes on the old box (which is black and has green and red etc colours). And some DA300 comes in the box with new design, the silverish grey box with a few big 'K' around it. Does it mean the ones in that new silverish grey box, supposedly has the 'new' SDM motor? (And supoosedly, lesser chance of it going haywire?)

12-02-2020, 07:07 AM	#8
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	This one was in the silver box, I picked it up yesterday. There wasn’t one in Canada so they had to order it in. It took quite a while to come in. I’m hoping I don’t have to send it in and get it fixed.

12-02-2020, 07:20 AM	#9
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,398	Originally posted by sjovolde Is there still an issue with the SDM motors? What I had read the problem on the new ones had been resolved. Even if the vast majority are fixed there could be a bad part slipping by quality control. I don’t know that this is the case, usually sdm failure would emit squeaks and squeal a bit and slow down. I asked the question but I can’t say it’s the most likely problem. Control circuits in the lens could be bad - it is difficult know. I personally would return the lens or send for repairs.

12-02-2020, 07:24 AM	#10
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	The lens makes a clicking sound when it acquires focus. Is that normal.

12-02-2020, 07:29 AM	#11
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,398	Originally posted by sjovolde The lens makes a clicking sound when it acquires focus. Is that normal. Not that I’ve seen. It should make very slight sounds. The noises are more like a tiny whine than clicks. It’s hard to describe. If possible maybe take video with audio of the lens focusing and clicking and post it.

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12-02-2020, 07:32 AM	#12
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	It’s not really a click more a faint sound. I’ll see if i can post a video somehow. Thanks for the info. I’m going to call the camera shop I deal with and see what they want to do about it. It’s brand new maybe they can get in another and swap it for me.

12-02-2020, 07:34 AM	#13
termy Loyal Site Supporter Join Date: Jan 2019 Posts: 1,154	Hopefully, they do a one for one replacement for you. brand new just came in to you and something like this pop. Should replace.

12-02-2020, 09:15 AM - 1 Like	#14
sjovolde Forum Member Join Date: Jan 2012 Location: Outlook, Sask. Photos: Albums Posts: 58 Original Poster	Just talked to the camera shop I deal with. They are getting me a new lens no problem. Thanks for the info and help.

12-02-2020, 04:09 PM	#15
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,291	Good result, it should not make that noise