Trouble importing pictures from my Nikon to my Mac?

I know nothing about cameras, just a warning
I have a Nikon d1700 and everytime I take pictures and I import them to iPhoto, only about 1/4 of them import. It says the others cannot be imported. I thought it was because they were.nef but also a few.jpg weren't importing(But mostly.nef). Help?

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Which cheap waterproof camera would you pick between these 2. Need opinion?

Hello I'm on a budget for a cheap-ish waterproof camea under $150 for a vacation where we will be snorkeling. I am torn between Target's the PANASONIC TS25 (Orange Lumix) priced on sale at $140 OR the NIKON S33 in white. Both waterproof. I looked at the specs and the nikon s33 seems to have an advantage in HD Video at 1080HD, but other than that I'm not sure. A comparison website said to go with the Panasonic. What do you guys think if you HAD to choose between the 2. Please don't say neither or suggest any other cameras.

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Why did the buttons on the back of my nikon d5300 stop working?

None of the buttons on the back of my d5300 work anymore. Not sure if it's damaged or somehow locked! I can't review or edit or delete pics. I can still take pics. But that's all. Thanks for help!

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