How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8

Class A · 02-22-2014, 07:00 AM

Efforts by user Shodan have resulted in the ability to enter the extended debug menu on modern DSLRs such as the K-30, K-5 (II), and K-3.

It seems that it will no longer be necessary to get hold of older models in order to read/write the lens data.

thibs · 02-22-2014, 08:27 AM

Wow... excellent news !!

Driline · 02-22-2014, 09:09 AM

Originally posted by Class A

Efforts by user Shodan have resulted in the ability to enter the extended debug menu on modern DSLRs such as the K-30, K-5 (II), and K-3.

It seems that it will no longer be necessary to get hold of older models in order to read/write the lens data.

I thought PKtether took care of this. What's the difference?

Duc-Driver · 02-22-2014, 09:40 AM

with pkthether you don't get the full debug menu

Driline · 02-22-2014, 05:23 PM

Originally posted by Duc-Driver

with pkthether you don't get the full debug menu

But if all you're doing is changing over to screw drive from SDM it doesn't matter right?

Wired · 02-24-2014, 03:42 PM

I may have missed it earlier in the thread, but is screwdrive faster on the DA*50-135. My SDM motor works fine, no concerns there, but the focus speed is just so bloody slow on all SDM lenses I own compared to screw drive. its caused me to miss shots

Driline · 02-24-2014, 06:47 PM

Originally posted by Wired

I may have missed it earlier in the thread, but is screwdrive faster on the DA*50-135. My SDM motor works fine, no concerns there, but the focus speed is just so bloody slow on all SDM lenses I own compared to screw drive. its caused me to miss shots

Some have said it is a bit faster. Others have not noticed a difference. So I guess its all about perception?

Driline · 03-02-2014, 11:55 AM

Please see Pjm1 post for the "correct" way to deactive SDM and convert to screw drive with a K-5

Driline · 03-04-2014, 09:19 PM

Bumpity bump. Bueller? Bueller?

Driline · 03-08-2014, 07:34 AM

Attempting SDM to screwdrive procedure for K-5 DA*16-50 using Pktether.......results to follow.......

---------- Post added 03-08-14 at 09:30 AM ----------

No Joy. I can enter the TEST MODE on the C menu, but I cannot get into the De Bug Mode via the modset.474 file using the [OPEN_DEBUG_MENU] command. Looks like its off to Henry's for them to send out for repair.

Sandy Hancock · 03-08-2014, 02:10 PM

You need an earlier camera body. I used a K10D borrowed from a friend.
I don't think anyone has sorted out how to do it with a K-5 *yet*.

Class A · 03-08-2014, 02:32 PM

Originally posted by Sandy Hancock

You need an earlier camera body.

Maybe not.

Try entering the debug menu as described in the the "Firmware Hacking" thread. This latest way of entering the debug menu may get you to a functional version of the required submenu.

Driline · 03-08-2014, 03:01 PM

My sister has a K100D. I wonder if that camera would work?

Sandy Hancock · 03-08-2014, 03:27 PM

Originally posted by Driline

My sister has a K100D. I wonder if that camera would work?

According to post #173 in this thread, yes.

Class A · 03-08-2014, 04:01 PM

Originally posted by Driline

My sister has a K100D. I wonder if that camera would work?

The K100D even has a built-in editor.

After saving the original lens data, you could edit the data by using the K100D. No need to use Notepad+ or similar.

02-22-2014, 07:00 AM	#256
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Using Modern DSLRs Efforts by user Shodan have resulted in the ability to enter the extended debug menu on modern DSLRs such as the K-30, K-5 (II), and K-3. It seems that it will no longer be necessary to get hold of older models in order to read/write the lens data.

03-02-2014, 11:55 AM	#263
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Please see Pjm1 post for the "correct" way to deactive SDM and convert to screw drive with a K-5 Last edited by Driline; 03-11-2014 at 10:33 AM.

03-08-2014, 07:34 AM	#265
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Attempting SDM to screwdrive procedure for K-5 DA16-50 using Pktether.......results to follow....... ---------- Post added 03-08-14 at 09:30 AM ---------- No Joy. I can enter the TEST MODE on the C menu, but I cannot get into the De Bug Mode via the modset.474 file using the [OPEN_DEBUG_MENU] command. Looks like its off to Henry's for them to send out for repair. Last edited by Driline; 03-08-2014 at 08:31 AM.*

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02-22-2014, 08:27 AM	#257
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Wow... excellent news !!

02-22-2014, 09:09 AM	#258
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Originally posted by Class A Efforts by user Shodan have resulted in the ability to enter the extended debug menu on modern DSLRs such as the K-30, K-5 (II), and K-3. It seems that it will no longer be necessary to get hold of older models in order to read/write the lens data. I thought PKtether took care of this. What's the difference?

02-22-2014, 09:40 AM	#259
Duc-Driver Forum Member Join Date: Feb 2014 Photos: Gallery Posts: 87	with pkthether you don't get the full debug menu

02-22-2014, 05:23 PM	#260
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Originally posted by Duc-Driver with pkthether you don't get the full debug menu But if all you're doing is changing over to screw drive from SDM it doesn't matter right?

02-24-2014, 03:42 PM	#261
Wired Veteran Member Join Date: Aug 2009 Location: Edmonton, AB Photos: Gallery \| Albums Posts: 2,519	I may have missed it earlier in the thread, but is screwdrive faster on the DA*50-135. My SDM motor works fine, no concerns there, but the focus speed is just so bloody slow on all SDM lenses I own compared to screw drive. its caused me to miss shots

02-24-2014, 06:47 PM	#262
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Originally posted by Wired I may have missed it earlier in the thread, but is screwdrive faster on the DA*50-135. My SDM motor works fine, no concerns there, but the focus speed is just so bloody slow on all SDM lenses I own compared to screw drive. its caused me to miss shots Some have said it is a bit faster. Others have not noticed a difference. So I guess its all about perception?

03-04-2014, 09:19 PM	#264
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Bumpity bump. Bueller? Bueller?

03-08-2014, 02:10 PM	#266
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,275	You need an earlier camera body. I used a K10D borrowed from a friend. I don't think anyone has sorted out how to do it with a K-5 yet.

03-08-2014, 02:32 PM	#267
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Originally posted by Sandy Hancock You need an earlier camera body. Maybe not. Try entering the debug menu as described in the the "Firmware Hacking" thread. This latest way of entering the debug menu may get you to a functional version of the required submenu.

03-08-2014, 03:01 PM	#268
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	My sister has a K100D. I wonder if that camera would work?

03-08-2014, 03:27 PM	#269
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,275	Originally posted by Driline My sister has a K100D. I wonder if that camera would work? According to post #173 in this thread, yes.

03-08-2014, 04:01 PM	#270
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251	Originally posted by Driline My sister has a K100D. I wonder if that camera would work? The K100D even has a built-in editor. After saving the original lens data, you could edit the data by using the K100D. No need to use Notepad+ or similar.