Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
  
For Sale: SDM to Screwdrive Conversions
Listed: 01-11-2016, 07:27 PM

PentaxForums.com Marketplace Listing

Item for Sale
SDM to Screwdrive Conversions

Asking Price
45.00 USD

Item Location
Mint Hill, NC (United States)

Item Description
As a service to fellow Pentax Forum users and with special permission from Adam I am happy to announce that I am available to convert failed SDM lenses to Screwdrive. I am only charging $45 at this time for lenses that I know how to convert. This is merely to cover my time and effort involved in tracking and sending packages and the time required to perform the conversion. The actual conversion is not hard and I encourage those willing to do this for themselves to do so but for those who want a bit of help - I'm offering this service.

The service includes:
Test Lens prior to conversion to verify that screwdrive is functional.
Backup LENSEEP.LNS file as is.
Modify a copy of this file to have screwdrive configuration.
Load modified file into the lens and test on an SDM capable body.
Return lens postage paid by owner.

Optionally: Email backup and modified files to the owner.


I have successfully converted all of these lenses:
DA* 16-50
DA* 50-135
DA* 200
DA* 300

I am unable to convert the DA* 60-250. There are no known methods for this conversion since the method that works for the other lenses is unreliable on this lens.

An example converted 16-50:



Please NOTE Lenses shipped to me without insurance that are lost are not my responsibility. I strongly suggest using a method with tracking and insurance but that is entirely up to you. My return postage will be based on your explicit instructions and I will not be responsible for lost items. I encourage the use of tracking and insurance.

I STRONGLY recommend that you include a letter inside the package identifying your Pentax Forums ID, the email you wish to be billed at and a contact phone number as well as full address. Ideally the letter should contain your address and mine just in case the label is lost for any reason. Finally if you include your postage instructions (insurance amount, signature required) it will make it easier. You should include not only an email for contact but also the specific email for me to send a paypal invoice to for payment.

Shipping Destinations
United States (Others considered on request)

Shipping Charge
Paid by Lens Owner

Shipping Services
USPS, UPS

Accepted Payment Types
PayPal

Return Policy & Additional Details
If I am unable to convert the lens I will not charge for the service. Lens owner is still responsible for return shipping.

Please send me a private message if interested in the service!


In Canada fozzfoster is offering a similar service: https://www.pentaxforums.com/forums/24-photographic-equipment-sale/456045-sa...ns-canada.html

Last edited by UncleVanya; 12-20-2023 at 10:08 AM.
Views: 62,239
11-02-2018, 05:06 PM   #211
Senior Member




Join Date: Dec 2007
Location: Louisiana
Posts: 243
Feedback Score: 7 (100%)
QuoteOriginally posted by UncleVanya Quote
Bump... bump!
Still $25? I am ready to get mine converted

11-03-2018, 05:47 AM   #212
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
QuoteOriginally posted by cajuncutter Quote
Still $25? I am ready to get mine converted
There was a small increase in price, the fee is now $30. I think that is updated on the initial page, but if not I apologize for the confusion.
11-30-2018, 08:33 AM   #213
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
Bump... Bump
12-05-2018, 11:01 PM   #214
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
Conversions available - get that dead DA* back in action with a quick screw!

01-18-2019, 12:39 PM   #215
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
Bring your tired and worn down DA* lenses back to life with ScrewDriveIT! The non-patented, simple conversion from SDM to screw drive. Sure you could do it yourself but why bother when I only charge $30!

Lenses eligible:
DA* 16-50
DA* 50-135
DA* 200
DA* 300

Sadly the DA* 60-250 will not reliably convert. The other DA* lenses lack the needed internal hardware for screw drive.
01-31-2019, 12:59 PM   #216
New Member




Join Date: Aug 2014
Posts: 2
Feedback Score: 0 (0%)
Will your fix work on a K3 camera?
01-31-2019, 04:08 PM   #217
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
QuoteOriginally posted by leonso Quote
Will your fix work on a K3 camera?
Yes it is camera agnostic. The lens ROM is modified to lie to the cameras and tell them it is a screw drive only lens instead of telling the camera it can do both. This makes the camera bypass SDM and use screw drive. I have used my converted lenses on a K100D, K100D Super, K-3, and K-1 and never had a problem.

02-21-2019, 09:49 PM   #218
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
Just a reminder this service is still available.
03-08-2019, 02:13 PM   #219
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
Still doing my best to return these lovely lenses to functioning members of your flock. Let's get those shelf queens back in rotation!
03-09-2019, 09:39 AM   #220
Loyal Site Supporter
Loyal Site Supporter




Join Date: Aug 2010
Location: Toronto
Posts: 2,407
Feedback Score: 10 (100%)
Uncle Vanya,

Any chance that you could tackle a DA* 55?

Best,

JVA
03-09-2019, 10:05 AM   #221
Veteran Member




Join Date: Apr 2016
Posts: 543
Feedback Score: 10 (100%)
QuoteOriginally posted by jva59 Quote
Uncle Vanya,

Any chance that you could tackle a DA* 55?

Best,

JVA
The DA*55 can't be converted as it has no screwdrive. It'll usually be fine as long as you use and exercise it regularly.
03-09-2019, 10:45 AM   #222
Loyal Site Supporter
Loyal Site Supporter




Join Date: Aug 2010
Location: Toronto
Posts: 2,407
Feedback Score: 10 (100%)
QuoteOriginally posted by HarisF1 Quote
The DA*55 can't be converted as it has no screwdrive. It'll usually be fine as long as you use and exercise it regularly.
Thanks for the info! Best, JVA
03-09-2019, 10:36 PM   #223
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Posts: 28,172
Feedback Score: 44 (100%)
Original Poster
QuoteOriginally posted by jva59 Quote
Uncle Vanya,

Any chance that you could tackle a DA* 55?

Best,

JVA
Only the DA* 16-50, 50-135, 200 and 300 can be converted with this method.
03-10-2019, 06:04 PM   #224
Loyal Site Supporter
Loyal Site Supporter




Join Date: Aug 2010
Location: Toronto
Posts: 2,407
Feedback Score: 10 (100%)
QuoteOriginally posted by UncleVanya Quote
Only the DA* 16-50, 50-135, 200 and 300 can be converted with this method.
Thanks for letting me know. Alas the SDM motor in my 55 is shot, so I'll have to have something done.
04-28-2019, 05:13 PM   #225
Loyal Site Supporter
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Working From Home
Posts: 26,276
Feedback Score: 159 (99%)
SDM on the 50-135 I just bought in the Marketplace has quit. Screwdrive is fine. Sending my lens and a PM.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
buy pentax, camera, classifieds, conversion, da*, debug, drive, file, for sale, information, k-s2, lens, lenses, pentax for sale, pentax marketplace, post, screw, sdm, sell pentax, service, thread, time, uncle, user
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM converted to screwdrive transam879 Sold Items 4 04-08-2015 09:22 AM
Modifiying lens EPROM to desactivate SDM and use screwdrive :D aurele Pentax SLR Lens Discussion 3 12-21-2012 06:22 PM
SDM failure in body without default to screwdrive? kxr4trids Pentax DSLR Discussion 8 08-14-2010 06:41 AM
K20D defaulting to screwdrive focus instead of SDM shemj Pentax DSLR Discussion 15 01-26-2010 04:22 PM
SDM vs. screwdrive SylBer Pentax SLR Lens Discussion 3 10-23-2009 02:03 AM



All times are GMT -7. The time now is 03:02 PM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top