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Nikon D7100 Sigma lens focus problem

Several consumers have decided to head back to Nikon in order to see what all the fuss was about with the D7100, and for the most part, many of them seem very happy with their purchase. However, as ever there are always going to be issues, and some of them are found when using a third-party lens, such as Sigma.

We have been looking over the forums, and it seems as though one user has an issue with the Sigma lens on his Nikon D7100, and it wasn’t long before others started joining in the conversation. The lens in question is an old Sigma Apo 400mm f/5.6 telephoto, although it’s said to be in superb condition.

After setting up the lens to work correctly with the D7100, it didn’t take long to realize something was wrong, it seems as though to the right there is just one focus point. The user spent a while trying to shift it to another area, but with no luck, and so has given up trying to work with a lens he is unable to use correctly.

Remember, this is just a lens focus problem with an old Sigma lens on the Nikon D7100, and so you should have no worries with a new model. There have been several responses in order to correct this issue, such as making sure the Focus Selector Dial is unlocked first.

However, it seems that other Sigma lenses have issues as well, because they are too old for a software update to support the D7100. The lenses in question are the 135-400 and a 105 macro. Nikon has been contacted about this issue and as always they would advise against using third-party lenses, but would you expect anything less?

It seems the Nikon D7100 is unable to support several Sigma lenses, more details can be found by visiting the Nikon Forum.

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Written by Peter Chubb

Peter has been writing on Product-Reviews since 2007 and in that time much has changed for him, like his hair having more grey than brown now. He loves gadgets and cars, and gets excited when big events come up, such as CES and the big auto shows.

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He started out working in a factory and dreamed of the day when he could become his own boss; That happened back in 2002 and he has never looked back since. Things have changed so much on the Internet in that time, but he has adapted well.

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