Enligt B&H då skillnaden mellan USA & grå import av objektiv!
What are the differences as far as a customer is concerned?
In most cases the difference between a USA import and a Grey Market, or imported product, is the cost of the item and the terms of the item’s warranty coverage. The products themselves are otherwise identical in every way. Occasionally the manufacturer might change a product name of model number to differentiate between products targeted for US distribution and products targeted for distribution elsewhere.
As a rule, Grey Market items cost less than their USA counterparts. The warranty of Grey Market items are often, but not always, the same as their USA counterparts. Specific details of product warranties vary by product and manufacturer.
If you should experience a problem with a product sold with a USA warranty, it can be sent to any of the manufacturer’s worldwide authorized service facilities for servicing. A "direct import" or grey market item would have to be returned to B&H Photo-Video if it required in-warranty attention.
A resident of the USA may wish to make the buying decision based on price since the cost of shipping to a US service center or to B&H should be about equal.
A non-USA resident should consider the cost of returning a product to B&H in New York for servicing as opposed to the cost of taking the product to a local warranty service center.
(hoppas den stämmer)
. Så det var till hjälp ändå! 
