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08-02-2014, 07:28 PM   #1
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K100d debug mode.

Somehow the SDM in my 16-50 broke and I just bought a k100d to disable SDM and enable the screwdrive and I have looked at all the threads with instructions on how to do this but one of the steps is writing a file to the lens and I can't find the read/write function. Does anyone have experience with disabling SDM using the k100d and can answer my question.

08-02-2014, 07:38 PM   #2
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The K100D does not support SDM at all, so your 16-50 should just focus using screwdrive without the need for software tweaks.

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08-02-2014, 07:45 PM   #3
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I think he wants to use it on a camera that does have SDM. The k100d is just there for Debug mode.
08-02-2014, 07:47 PM   #4
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I have a k-3 and bought the k100d for the sole purpose of disabling the SDM in my 16-50 but in the instructions herehttps://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/208353-how-...m-f-2-8-a.html, in step 4 it seems like you load the file onto the lens but I can't find out how to do that.

08-02-2014, 07:56 PM   #5
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QuoteOriginally posted by clackers Quote
I think he wants to use it on a camera that does have SDM. The k100d is just there for Debug mode.
Aah, gotcha.

QuoteOriginally posted by agrzesiak Quote
I have a k-3 and bought the k100d for the sole purpose of disabling the SDM in my 16-50 but in the instructions hereHow to deactivate SDM and allow for screw drive autofocus with DA* 16-50mm f/2.8, in step 4 it seems like you load the file onto the lens but I can't find out how to do that.
You create the lens file on your PC, copy it over to the card, then select it via the camera's debug mode.

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08-02-2014, 08:03 PM   #6
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yeah but in the k100d's debug mode all i can find is capture text, system test, and AF test. And I go into system test and there are 5 lines saying "test item 1", "test item 2" and so on.
09-30-2014, 06:18 AM   #7
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You don't have to enter the camera menu. It can be found BEFORE you get into camera menu. (K100D with V1.07 hardware)

1: Hold INFO and AE-L then power up
2: Press MENU, MENU then INFO in 5 secends
3: You now enter the debug mode
4: Press MENU once
5: Here you go!

I Haven't done my 50-135 yet will be doing it soon. According to other member it should be fairly straightforward.


QuoteOriginally posted by agrzesiak Quote
yeah but in the k100d's debug mode all i can find is capture text, system test, and AF test. And I go into system test and there are 5 lines saying "test item 1", "test item 2" and so on.
02-22-2015, 12:47 PM   #8
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QuoteOriginally posted by bennyxyz Quote
You don't have to enter the camera menu. It can be found BEFORE you get into camera menu. (K100D with V1.07 hardware)

1: Hold INFO and AE-L then power up
2: Press MENU, MENU then INFO in 5 secends
3: You now enter the debug mode
4: Press MENU once
5: Here you go!

I Haven't done my 50-135 yet will be doing it soon. According to other member it should be fairly straightforward.
Does the same steps apply for k100-d super. i tried them and did not work for k100-d super. Appreciate the help.

02-24-2015, 02:20 AM   #9
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I used modset file to get into Test mode on K100Ds

try reading this: https://www.flickr.com/groups/k100dsuper/discuss/72157634519171510/

and this: https://www.pentaxforums.com/forums/6-pentax-dslr-discussion/154773-k100d-sup...af-adjust.html
02-24-2015, 04:30 AM   #10
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QuoteOriginally posted by elektrolitr Quote
Thanks for the response. One question though. Did you use MODSET method to adjust the AF or to convert any lens from SDM to screw drive. i believe there are 2 things here. Entering into DEBUG mode to fix AF issue and another one is to read and write the EPROM data to convert a lens from SDM to screw drive. I mean when you enabled the DEBUG mode , did you see a option to read and write into EPROM?. Also my firmware version on K100d super is 1.00. what was your version?
02-24-2015, 10:00 AM   #11
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I used this to correct AF, and it was long before SDM->screwdrive conversion was even published. So I don't remember, if there were any EEPROM-related menus. I can see a bit later, if needed.

I converted 16-50 to screwdrive using K-5 (and modset files), but it's different story.

Firmware v1.00 is the only version for K100D Super (I assume that all bugs were fixed in K100D (non-Super))
02-26-2015, 01:42 AM   #12
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Looked today into Debug mode menu and didn't find any lens-EEPROM related items

Sad, but that's life
02-26-2015, 05:55 AM   #13
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QuoteOriginally posted by elektrolitr Quote
Looked today into Debug mode menu and didn't find any lens-EEPROM related items

Sad, but that's life
Thank you for checking again. Now i need to look into another Camera for converting my DA* 16-50.

Last edited by trumanusa; 02-26-2015 at 08:28 PM.
02-26-2015, 07:30 PM   #14
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QuoteOriginally posted by elektrolitr Quote
Looked today into Debug mode menu and didn't find any lens-EEPROM related items

Sad, but that's life
That may be because the K100D does not support the SDM lenses.


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03-01-2015, 12:55 PM   #15
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I have K100D Super and it does support SDM. I doubt that SDM support and Debug mode possibilities are related.
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