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Forum: Pentax SLR Lens Discussion 01-22-2016, 04:18 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Hello,

it s been a long time since I rea this tread.

I am happy to read that there is a way to use K5/II/IIS to achieve it ! And even Mac...

Chears !!
Forum: Pentax SLR Lens Discussion 04-12-2014, 03:33 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
It seems that someone get the name fil for K5 body
Forum: Pentax SLR Lens Discussion 04-15-2013, 07:55 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
It is right now difficult to get the info on how to do it with ealier DSLR because the modeset file change and I think that this thread is known by Pentax Staff.

My recent 60-250mm, I cannot acchieve to switch as easy as for my 16-50mm.
Forum: Pentax SLR Lens Discussion 03-28-2013, 08:43 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Probably. I will try as soon as possible;
Forum: Pentax SLR Lens Discussion 01-28-2013, 12:10 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Use PKteter to switch on or off the debug mode , it needs a sd card inside to use and the modeset file, you only need to write

[OPEN_DEBUG_MENU]
Forum: Pentax SLR Lens Discussion 01-27-2013, 05:35 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Probably, but the instructions are different, you need to access debug mode menu, but the way semms to be very different since the K-5
Forum: Pentax SLR Lens Discussion 01-06-2013, 08:41 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Yes, once the lens is set as screwdrive, it will always work as a screw drive lens, no matter the DSLR you use.
( I have K10, K20, K7., K5 and K01..)
Forum: Pentax SLR Lens Discussion 01-02-2013, 03:23 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
nixite, can you post your eeprom ?
Forum: Pentax SLR Lens Discussion 01-01-2013, 04:56 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
It is possible that broken sdm may interfer someway, if the failure is due to a mecanichal trouble such as sticky ruber
Forum: Pentax SLR Lens Discussion 12-29-2012, 11:11 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
One idea, is that you may change the registered focal length, as far as I know, using a converter do not change for the DSLR , the final length.
So, it may be interesting to change the focal lenght of a 300mm DA f/:4 with a converter x1.5, so the stabilization may be more efficience. Also, for this example, it will help to use converter and keep using the AF
Forum: Pentax SLR Lens Discussion 12-28-2012, 03:35 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
it is more "sacadé" more jerky. ( using AF-C, you can much more fell it)
The smooth of the SDM is not only bad.
Forum: Pentax SLR Lens Discussion 12-28-2012, 01:50 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
My opinion is that it is more "brutal" but also more hésitating, So finally, it is not really faster
Forum: Pentax SLR Lens Discussion 12-27-2012, 05:52 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I do not know what could lead admins to put it on sticky, I am not sure the article is published in the right section.
Forum: Pentax SLR Lens Discussion 12-27-2012, 05:50 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Front and Back Focus are very hard to adjust, it is useful if you have a K10d, for younger DSLR, most of the time, the regular adjust is enought. The hardest thing is that adjusting Front and Back focus is specific for a unique couple of DSLR and Lens.
Forum: Pentax SLR Lens Discussion 12-27-2012, 05:47 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I gave you a way to try, but it will takes time and I am not sure it will works...(1000 differents MODSET files to create)
Forum: Pentax SLR Lens Discussion 12-27-2012, 05:46 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I am only the last "link" of this process. The hader thing was already done, but I am the only one who give the way to do it with the DSLR without using NotePad++ (it isnot really hard as long as you understand how it works)
Forum: Pentax SLR Lens Discussion 12-27-2012, 05:43 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
The lens file is completly different, from 16-50, to 50-135mm, but you can find where there is some similar code to change.

Unfortunatly , for the 60-250mm, it is different, but I only try one way.
Forum: Pentax SLR Lens Discussion 12-26-2012, 11:00 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I hope you do not ask me to make a youtube video to prouve it ..?

^-^

Anyway, I do not achieve to find yet, the code for my 60-250mm, and I am still waiting for one of my friend to let me try with his 50-135mm.
I will try later with a 200mm DA or a 300mm DA
Forum: Pentax SLR Lens Discussion 12-26-2012, 10:57 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
You need to use notepad+ to view the .lens file as line and colunn
Forum: Pentax SLR Lens Discussion 12-26-2012, 10:56 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I may do it, but it is no easy from France...
Forum: Pentax SLR Lens Discussion 12-19-2012, 05:36 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
I think you can do it as I said, but, you need first to use PKtether as for the K7 and to creat lots of MODSET fil so you can defin which one works.
Forum: Pentax SLR Lens Discussion 12-17-2012, 11:22 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
It is "simple" to make it with any DSLR, as far as it works with Pktether and that we know the "modset" file.

Another way to do it, is to creat 1000 files with the name : MODSET.001 to MODSET.999 with inside the same command

[OPEN_DEBUG_MENU]

I have just tried to make it work with the 60-250mm, but, it need to change different address, I am sure to make it as I begin to use both Notepad++ and Hex Editor Neo
Forum: Pentax SLR Lens Discussion 12-16-2012, 07:11 AM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Here is the process using a Pentax K-7

ATTENTION PLEASE: THIS IS UNOFFICAL INSTRUCTIONS, FOLLOW THEM AT YOUR ONWN RISK.

This article is born after a long and interesting thread on pentaxkpark.com
[K20D] D
Thanks again, to poildegris for his help and also to nicokoscom55 for his work, I am only the messenger

Let's start.

Few Pentax lenses have the ability to do autofocus with SDM or with the motor inside the body if the body does not allow SDM.

These SDM * lenses are :
-smc PENTAX-DA* 16-50mmF2.8 ED AL [IF] SDM
-smc PENTAX-DA* 50-135mm F2.8 ED [IF]SDM
-smc PENTAX DA* 60-250mm F4ED [IF] SDM
-smc PENTAX-DA* 200mmF2.8 ED[IF] SDM
-smc PENTAX-DA* 300mmF4 ED[IF] SDM

The process begins likely as updating the firmware, with press and holding MENU button, but we will not use a firmware but a Text document created as written in Pentax-hack.info website

Debug mode


Each command will need a different SD card or to rewrite the MODSET file.

Main steps are
-1 Using a file to access the debug mode
-2 Using a file to show the list of commands and then save the original EEPROM
-3 Changing the EEPROM file with notepad++ or the Body it self
-4 Load the modified EEPROM inside the lens
-5 deseactivating the debug mode

The easiest is to use a Pentax K-7 with PKTETHER.

As I do not own a 50-135mm, I will only talk about the process using a 16-50mm DA* with my K-7.

Let's start after the battery fully charged and the 16-50mm mounted on it.

{{STEP 1}}
Here is the process using a Pentax K-7

Download PKTETHER
PK_Tether | Tethering and remote control software for Pentax DSLR cameras

Plug your K-7 to your computer using the USB cable ( sold with the body) and launch PKTETHER
Switch ON the DEBUG MODE by click on CAMERA DEBUG MODE ON

{{STEP 2}}
TAke back your SD card and, using Notepad, create a file nammed MODSET.474
inside, only write (after un blank line):

[OPEN_DEBUG_MENU]

Put the file in the root of the SD cardPut the card inside the switched Off DSLR.
Press and Hold MENU button and switch on the DSLR.

If everything OK, it will show you all options avaible on Debug mode :
Beware to not change a thing you do not need ( once again, all this are made at your own risk)

Use the pad to go to the line
LENS ROM CAMERA=>SD

Make a saved file of the EEPROM to allow you to reverse the process in cas of troubles

{{STEP 3}}
To modify the EEPROM, you can
-Either access the LENSEEP.LNS file you create by saving the file, I ask you to use Notepad++ Notepad++ Home
-Or go to the line :
LENS EEPROM READ/WRITE
You can change the code line by line


Using NOTEPAD++ : DO NOT FORGET TO SAVE A FILE AND MODIFY A COPY FOR YOUR OWN SECURITY

Then change the code "C0" by "80" in the colonn 03,for the following lines
-* 0020
-* 0060
-* 00A0
-* 00E0
-* 0120
-* 0160
-* 01A0
-* 01E0
-* 0220
-* 0260
-* 02A0
-* 02E0
-* 0320
-* 0360
-* 03A0
-* 03E0


Using the DSLR directly : DO NOT FORGET TO SAVE A FILE AND MODIFY A COPY FOR YOUR OWN SECURITY
Access the line
LENS ROM EDIT R/W using the pad and the OK button.
Using the pad and dial, access the READ /WRITE function, check by read the info before modify it. Really check the info at the adress before change it. You need to read "C0" WRITE "80"
-* 0023
-* 0063
-* 00A3
-* 00E3
-* 0123
-* 0163
-* 01A3
-* 01E3
-* 0223
-* 0263
-* 02A3
-* 02E3
-* 0323
-* 0363
-* 03A3
-* 03E3


{{STEP 4}}
Put the modified fil LENSEEP.LNS in the root of the card and load it as using the Debug mod ( line under the line you use for saving the file )

LENS ROM DAT SD => CAMERA

{{STEP 5}}

Check your lens on the DSLR, the SDM will no more work.

Then Plug your K-7 to your computer and launch PKTETHER
Switch off the DEBUG MODE by click on CAMERA DEBUG MODE OFF

Tadaaaaaa

If everything OK, you did it, the DSLR will work as before, and the 16-50mm will not use SDM on any DSLR unlast you relaod the old LENSEEP.LNS.
Forum: Pentax SLR Lens Discussion 12-13-2012, 03:46 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
Thank you also for the "private" help

Here is the all instruction

http://www.pentaxiste.org/pratique/depannage/article/how-to-deactivate-sdm-a...ar_mode=calcul

ATTENTION PLEASE: THIS IS UNOFFICAL INSTRUCTIONS, FOLLOW THEM AT YOUR ONWN RISK.

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

This article is born after a long and interesting thread on pentaxkpark.com
[K20D] D
Thanks again, to poildegris for his help and also to nicokoscom55 for his work, I am only the messenger

Let's start.

Few Pentax lenses have the ability to do autofocus with SDM or with the motor inside the body if the body does not allow SDM.

These SDM * lenses are :
-smc PENTAX-DA* 16-50mmF2.8 ED AL [IF] SDM
-smc PENTAX-DA* 50-135mm F2.8 ED [IF]SDM
-smc PENTAX DA* 60-250mm F4ED [IF] SDM
-smc PENTAX-DA* 200mmF2.8 ED[IF] SDM
-smc PENTAX-DA* 300mmF4 ED[IF] SDM

The process begins likely as updating the firmware, with press and holding MENU button, but we will not use a firmware but a Text document created as written in Pentax-hack.info website

Debug mode


Each command will need a different SD card or to rewrite the MODSET file.

Main steps are
-1 Using a file to access the debug mode
-2 Using a file to show the list of commands and then save the original EEPROM
-3 Changing the EEPROM file with notepad++ or the Body it self
-4 Load the modified EEPROM inside the lens
-5 deseactivating the debug mode

The easiest is to use not updated K10D or K20D so you will easily access the debug mode by following pentax-hack instructions.

As I do not own a 50-135mm, I will only talk about the process using a 16-50mm DA* with my K10D.

Let's start after the battery fully charged and the 16-50mm mounted on it.

{{STEP 1}}
I only know the process to access debug mode with firmware 1.30 updated K10d.

So using Notepad, create a file nammed MODSET.TXT
inside, only write :
[DEBUG_MODE EN]

Put the file in the root of the SD cardPut the card inside the switched Off DSLR.
Press and Hold MENU button and switch on the DSLR.

If everything OK, it will be written :

DEBUG MODE

{{STEP 2}}
TAke back your SD card and change the file MODSET.TXT and write inside only

[OPEN_DEBUG_MENU]

Put the file in the root of the SD cardPut the card inside the switched Off DSLR.
Press and Hold MENU button and switch on the DSLR.

If everything OK, it will show you all options avaible on Debug mode :
Beware to not change a thing you do not need ( once again, all this are made at your own risk)

Use the pad to go to the line
LENS EEPROM SAVE

Make a saved file of the EEPROM to allow you to reverse the process in cas of troubles

{{STEP 3}}
To modify the EEPROM, you can
-Either access the LENSEEP.LNS file you create by saving the file, I ask you to use Notepad++ Notepad++ Home
-Or go to the line :
LENS EEPROM READ/WRITE
You can change the code line by line


Using NOTEPAD++ : DO NOT FORGET TO SAVE A FILE AND MODIFY A COPY FOR YOUR OWN SECURITY

Then change the code "C0" by "80" in the colonn 03,for the following lines
-* 0020
-* 0060
-* 00A0
-* 00E0
-* 0120
-* 0160
-* 01A0
-* 01E0
-* 0220
-* 0260
-* 02A0
-* 02E0
-* 0320
-* 0360
-* 03A0
-* 03E0


Using the DSLR directly : DO NOT FORGET TO SAVE A FILE AND MODIFY A COPY FOR YOUR OWN SECURITY
Using the pad and dial, access the READ /WRITE function, check by read the info before modify it. Really check the info at the adress before change it. You need to read "C0" WRITE "80"
-* 0023
-* 0063
-* 00A3
-* 00E3
-* 0123
-* 0163
-* 01A3
-* 01E3
-* 0223
-* 0263
-* 02A3
-* 02E3
-* 0323
-* 0363
-* 03A3
-* 03E3


{{STEP 4}}
Put the modified fil LENSEEP.LNS in the root of the card and load it as using the Debug mod ( line under the line you use for saving the file )

LENS EPPROM LOAD

{{STEP 5}}

Check your lens on the DSLR, the SDM will no more work, Then take back your SD card and modify the MODSET.TXT file.
With this command
[DEBUG_MODE DIS]
Press and Hold MENU button and switch on the DSLR.

If everything OK, you did it, the DSLR will work as before, and the 16-50mm will not use SDM on any DSLR unlast you relaod the old LENSEEP.LNS.
Forum: Pentax SLR Lens Discussion 12-13-2012, 12:24 PM  
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8
Posted By clover
Replies: 870
Views: 274,957
How to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8 - Le site des amateurs de PENTAX


I post in page 1 the instructions, but I put a link to my websiute, so it is easier to read page older than page 1

Also, the instructions for 50-135mm
How to deactivate SDM and allow for screw drive autofocus with DA* 50-135mm f/2.8 - Le site des amateurs de PENTAX
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