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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
35.00 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 $30 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!

Last edited by UncleVanya; 11-26-2019 at 07:40 AM.
Views: 39,238
11-07-2019, 09:24 PM   #241
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QuoteOriginally posted by rlee200 Quote
Thank you UncleVanya for the great service! My 50-135 was converted to screwdrive and turned around in no time! Works accurately and super fast AF, I'm a happy camper! Highly recommend UncleVanya!!
I'm glad it worked out for you. I'm always happy when people find new life for a converted lens.

11-26-2019, 07:42 AM   #242
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Please note the price for this service has increased to $35. I apologise but my available time has decreased a bit so I've made this change to compensate for that.
12-24-2019, 07:31 AM   #243
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QuoteOriginally posted by UncleVanya Quote
Please note the price for this service has increased to $35. I apologise but my available time has decreased a bit so I've made this change to compensate for that.
I just took my DA 300 F4 out of storage and sure enough the SDM isn't working now! Repair quote is $353 to fix it, so the $35 to convert to screwdrive sounds pretty good. I'll send a PM to follow up.

Thanks!
12-24-2019, 07:49 PM   #244
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QuoteOriginally posted by TexasMike Quote
I just took my DA 300 F4 out of storage and sure enough the SDM isn't working now! Repair quote is $353 to fix it, so the $35 to convert to screwdrive sounds pretty good. I'll send a PM to follow up.

Thanks!
Happy to help. I've sent a private reply. The 300 is a fine lens. I'm sure you will be happy with it after the conversion.

01-11-2020, 01:06 PM   #245
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Thank you UncleVanya for the great service! After sending my DA 300mm to get converted, it works great! Highly recommend to anyone thinking about it.

Thanks again!
01-12-2020, 07:18 AM   #246
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QuoteOriginally posted by TexasMike Quote
Thank you UncleVanya for the great service! After sending my DA 300mm to get converted, it works great! Highly recommend to anyone thinking about it.

Thanks again!
This is what makes it worth doing. The lens now will have the chance to get used more often!
01-12-2020, 08:30 AM   #247
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You did my DA200, and did a fantastic job, with fast turnaround. Highly recommended.
01-14-2020, 07:28 AM   #248
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QuoteOriginally posted by TerryL Quote
You did my DA200, and did a fantastic job, with fast turnaround. Highly recommended.
I'm so glad! I enjoy hearing about this. Maybe we need av thread of lenses back from the dead... Lol.

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