Q: i cant see my nikons d750 nefs in finder

You will have to download the Software that came with the Nikon and then go to Nikons web site and make sure the software you downloaded from the CD/DVD is up to date. Many times when you buy a Camera they will sit on the shelves of the retailer for months and in the mean time they will update the software they send out on there CD/DVD's it is always a good idea to check with any new application you download.

Cheers and good Luck Hope this helps

DON

Here is some information:

OS X Yosemite: Supported digital camera RAW formats - Apple Support

Since there is system level support, you should not have to install third party software; which photo editing app do you prefer to use? I am not sure if Image Capture or Finder support RAW formats. If you have a particular preference, we can move your post to a forum where our photo gurus hang out.

Install Camera Raw update 6.01. It's on the update section of the App Store.

Image Capture will move raws and the Finder will show previews.