I have seen the term "native ISO" mentioned occasionally and wondered what it is. I have seen somewhere that Canon is supposed to have a native ISO of 160, and that Nikon's native IOS was either 100 or 200 (there seemed to be some dispute as to which was correct). So what is "native ISO", and what significance does it play? Also does anyone know which is the correct native ISO for Nikon cameras, 100 or 200? I did try searching on Google and found some articles that stated Canon native ISO is 100 and that Nikon native ISO is 160, so now I really don't know what is correct. I'd appreciate any help possible.

Its not counterfeit. Its a gray market camera. You can buy gray market cameras at B&H, Adorama and many other stores. They usually are a little less expensive.

Gray market products are exactly the same as USA and made on the same assembly line in the same factories, to the same standards but are sold through different distribution channels.

The only difference between USA and gray market is the warranty. Nikon will not honor the warranty in the US. It will need to be sent to the country of origin to get repaired.

Usually stores like B&H and others will offer their own warranties.

At this point its likely that you have no recourse other than to keep the camera and consider it a lesson learned unless you choose to sell it at a loss.

A lot of people here are rigid in their beliefs and throw up needless alarms. The likelihood of having a problem is slim to none unless you are clumsy and accident prone.

I buy gray market when there is a significant difference in price since I don't buy warranties regardless of the product.

I have been buying photo equipment for about 50 years and so far never needed a warranty claim.

And when I sell the equipment (seldom to individuals) the retail value is the same. Nikon warranties are not transferable.

Its not my intent to plug gray market; just want to clear things up since there seems to be much mis-information in some people's minds.

The store should have informed you that is was gray market so you could decide. I would not buy from them again.

Don't worry, be happy. Its a very good and reliable camera. I enjoyed mine while I had it.

I started with iPhoto, then went to Aperture, and when Apple announced the support for Aperture was done I switched to Lightroom and found it very easy to move.

The latest version of Lightroom will make transferring all your pictures and adjustments easy.

I myself decided to go with the Adobe Creative Cloud photographers package which is a 10.00 a month subscription for a year at a time and you get Lightroom, Photoshop and a few other apps.

BTW - Lightroom 6 is nearing release, and it will only be available as a subscription. To buy Lightroom you will be at 5.7.

One thing about "the cloud" - NOTHING is stored in the cloud unless you opt for that - all the software is downloaded and installed and runs on your computer just like a store bough package.

Note: Toughest thing about Lightroom is working with a catalog - if you used Aperture as a managed library then you are 90% there already.

Basically, Lightroom must IMPORT images before they can be edited. Like Aperture.

You can download a 30 day trial of Lightroom from Adobe to try.