How to exchange/return "Technically difficult goods of a household purpose"?

Search for the defect, any: then we can solve the problem in accordance with part 1 of article 18 of the Federal law ozpp. Otherwise — no.

www.sigmacomputers.ru/conditions/law-goods-list/
Item 11
"... photo - and cinematographic..."
So to get around this list does not.
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In a similar thread it was discussed that you can return the item if you notify the seller about the intended use of the product, he told you that the goods are suitable for this purpose is, and he never came. The bottom line about this.
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Ie if you for example said you need to work in 1C, and you sold the MacBook, you can try to take advantage of this item. In your case it seems not applicable.
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Conclusion: if the camera is fully functional (good quality), to pass an exam you can't.

the thing I'm trembling or right? =)

should we doubt that the seller will not give yourself hurt... Extremely unpleasant, however, that the store has a promotion "without problems" — www.mvideo.ru/adv-txt/?p=obmen and the challenges are there.

Thank you for the advice. Only here, for example, even if something exists — you still have to prove that the defect was formed is not my fault.

The camera is new, the defect is difficult to find. Kill the firmware — on examination will be seen that the problem is ON and nothing will change.
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Recommend just come and say, well the camera new, not even opened, I would like to change to something else a little more expensive. Typically, the stores are on vstrechu.