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Anyone ever had an issue with a TC failing to physically lock into position on a lens.
I have the new Sigma 120-300 f2.8 sport (Nice) and a sigma 1.4 DG EX TC that does not lock into position, that final click, and now the D3 body fails to sense the lens hence no autofocus/Aperature control etc so the pass through is not working. The lens does work fine on the D3 body so does point to the TC.
I've given both parts a good visual and cannot see any damage however it just doesn't align. The lens is new however TC is a few years old , unfortunately I don't have another Sigma lens to try it with to see which is the culprit, i.e. if lens can send it back, if TC wwould it be worth getting it sent toff to Sigma for a repair?
Any assistance would be really appreciated.
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Can't really help you - I have the 100-300F4 and 1.4 DG EX TC and its has worked fine for 5 years or more! I use it with a D300s. Sorry!!
Never had that problem with my 300 prime and 1.4 + 2x TC's
the following will probably not help, but it's perhaps worth a look
in case the link is removed before you view - sigmaphoto.com/teleconverter-compatibility
I've checked the Sigma web site already and both are compatible, however as this is a brand new Signal lens wanted to just make sure this is not a manufacturing issue that has already been seen.
I've taken the plunge of buying another Sigma TC, if this works will send the other one off for repair and put it up on ebay etc. Can't wait as needed for another weekend of sport so hopefully it's the TC and not the lens.
Will keep you posted.
Hope it works out for you
Sigma should exchange your faulty 1.4tc for one that does work, as it was not fit for purpose, using express delivery.
Another QC issue with Sigma...
Read again lol
Well the 2nd sigma 1.4 TC I purchased off ebay works fine, so thankfully is an issue with the TC not the new Sigma lens.
Spoke to Sigma and they are happy to take a look at my old one let's see what they say.
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