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09-20-2016, 08:16 AM   #1
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Pentax 18-270 Lens

Hi ... and thank you Adam.
I have been a photographer since th early 70's and teach digital imaging at the College of The Third Age in Manchester, England. I purchased a Pentax 18-270 SDM lens on the 14th November 2015. The Autofocus started juddering and would occasionally fail. I noticed that the body was pulling away from the mounting and took it back to Jessops where I bought the lens. They sent it to Pentax UK who have stated that the lens has been dropped or knocked. Jessops admitted that there was not a mark on the body, but still insist the lens has been dropped. Can any one offer any advice, thank you ... Duncan.

09-20-2016, 08:37 AM   #2
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Hi Duncan. Sorry to hear of your problem.

I have a Sigma 18-300 lens which is currently with Sigma for service. I've owned it since new, but a few weeks ago, after a visit to a local RSPCA open day with lots of people, the lens would jam when zooming unless I pointed it downwards. There wasn't a single mark on the outside, and I don't recall it ever receiving any sharp blows, but it's possible it got knocked in that crowd. Anyway, Sigma sent me photographs of the zoom roller parts that had been damaged by some form of impact, and it's quite clear there was indeed some damage. I went ahead with the service, but I'm having to pay for that outside of the warranty. It's an expensive lesson to me that I need to be very careful with that lens!

My reason for relating my own tale is to show that things can happen to our equipment that we may not be aware of, and a lack of external damage or marking doesn't necessarily mean there isn't internal damage. If Pentax UK has said there is evidence the lens has been dropped or knocked, I'd tend to believe that. It's quite possible that you simply weren't aware of it happening.

The 18-270 is a nice all-round lens, and - given how new yours is - it's worth paying to have it repaired.

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