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SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] SDM Serial Numbers - Specifications | ||||
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Like all other DA lenses, the SMC Pentax DA* 16-50mm is designed only for Pentax DSLR cameras. It was announced in late February, 2007. It auto-focuses with an SDM ultrasonic motor on the K10D (firmware 1.30) and newer cameras. On older cameras the lens will auto-focus with the 'screw drive' mechanism. Total Serials: 237 | ![16-50mm F2.8 ED AL [IF] SDM](https://www.pentaxforums.com/lensreviews/data/43/221200712913.jpg) | |||
| Serial / Avoid | Owner | Description | Location / Price | |
| 9049099 | Hidden | Work great with k5iis | March, 2012 | |
| 9049044 | Hidden | Used, excellent condition. | December, 2014 | |
| 9048880 | Hidden | Good lens. | January, 2013 | |
| 9048794 | Hidden | After a month and a half of use, the autofocus does not work anymore. Sent yesterday 09/09/2012 for repair. [update 9/28/12] Lens was back yesterday and works fine. It had just needed tuning and cleaning: strange... | July, 2012 | |
| 9048069 | Hidden | No | November, 2011 | |
| 9048019 | Hidden | Bought new. No problems yet, might have a bit of a back focusing issue that I'll check out soon. Will update. | December, 2011 | |
| 9047975 | Hidden | No damage (knocks on wood). Works perfectly fine :) One really really tiny piece of rubber scratched off from one of the "bumps" on the zoom ring (but it's mainly on the bottom majority of the time) | December, 2014 | |
| 9047768 | Hidden | Working perfectly so far, did need some focus calibration on my K10d to counter back focusing. | August, 2011 | |
| 9047716 | Hidden | Lens is working fine so far. | October, 2013 | |
| 9047489 | Hidden | Scratch on front lens. My Niece introduced it to a Waterford crystal drinking glass Christmas 2011. | September, 2011 | |
| 9047482 | Hidden | New | August, 2012 | |
| 9047390 | Hidden | Bought new, so far very impressed. A very sharp and contrasty copy. | July, 2011 | |
| 9047314 | Hidden | SDM failure after 10 months. | December, 2012 | |
| 9046965 | Hidden | Was a used model. | February, 2012 | |
| 9046938 | Hidden | I'm having a problem with autofocus on the K3 II | December, 2013 | |
| 9046872 | Hidden | Excellent condition, no issues whatsoever. Love this lens! | May, 2013 | |
| 9046871 | Hidden | Purchased USED (Excellent condition) came with Tiffen Digital Ultra Clear filter, hood, front/rear caps and Pentax soft case. | January, 2015 | |
| 9046852 | Hidden | No damage. It's clean. But I can not trust Adorma no more... | August, 2011 | |
| 9046609 | Hidden | Purchased used with warranty from Henry's of Canada.Lens did not focus right out of box. After warm up it would focus but squeaked. Sent back to Henry's for Pentax warranty repair. Pentax replaced SDM motor and performed lens alignment. Came back like new and PERFECT. Great lens. Very happy. | March, 2014 | |
| 9046415 | Hidden | Bought new. Also purchased additional 2 year SquareTrade Warranty. | November, 2012 | |
| 9046379 | Hidden | good copy | December, 2017 | |
| 9046326 | Hidden | Perfect (so far) | April, 2011 | |
| 9046222 | Hidden | second hand - no problem - perfect ! | January, 2012 | |
| 9046147 | Hidden | Great lens... but I had to send it for service, after the warranty naturally, the autofocus quit working. I've had it back for quite a while and it's working fine now...it's the primary lens on my K-x. | February, 2001 | |
| 9046096 | Hidden | Bought second hand from a forum member in the Americas. Initially perfect but SDM failed about six months later (heavy use). Repaired under Warrantee by Pentax Australia, but that failed again after another six months. I have now hacked the EEPROM and it lives again as an awesome screw-drive lens! | July, 2012 | |
| 9045966 | Hidden | The right side at 34/36mm is very soft and never sharpens up at any aperture. At 21mm both sides never get really sharp(note: this may be the way it is at 21mm, and if not for the 34mm issue, I would not of rejected this lens). | September, 2011 | |
| 9045864 | Hidden | Arrived in undisturbed packing. No issues. | December, 2012 | |
| 9045764 | Hidden | Bought online from B&H during the Black Friday sale. An offer too good to refuse. Still going strong - no SDM problems at all so far. | November, 2012 | |
| 9045697 | Hidden | Seems to be good copy. Purchased new and have had no problems. | December, 2011 | |
| 9045695 | Hidden | purchased new, old serial number, concerned about shelf time and SDM | January, 2015 | |
| 9045585 | Hidden | Bought "used" from Amazon, but in perfect condition. No issues. | November, 2011 | |
| 9045484 | Hidden | Bought new from B&H to replace a similar lens I had purchased from them and which never focused. This lens seems difficult to focus, with the SDM being noisy. Once B&H credits me for the previous purchase I'll return it to get a new one, or have them fix it for me. | August, 2014 | |
| 9045397 | Hidden | Love the lens, so far so good. | February, 2012 | |
| 9045391 | Hidden | Nice sharp copy Edit, 9/30/15 -SDM has failed. Had converted to Screwdrive by Uncle Vanya 3/04/16 works great. | November, 2013 | |
| 9045257 | Hidden | All good so far. | January, 2011 | |
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