Why won't my MacBook Pro recognize my Nikon camera?

Why won't my MacBook Pro recognize my Nikon camera? - 1

I tried multiple USB cords and on both ports, it works with my Canon Powershot fine, but won't show up when I plug in my Nikon D40.

Also I was taking pictures and when I went to upload them into my computer magically everything was lost? I had hundreds of pictures in there and I know for a fact I did not do any deleting. Now when I turn it on it tells me I need to format the card. What's going on?

What are you attempting to do?

If you are attempting to copy image files from your camera to your computer, you need to remove the memory card from the camera and insert it into your Apple computer. Use Finder to copy all the images from the card to a new file folder you name for the subject/location and date so you can find the images years later

If when you have your card in the card reader, the card shows empty or is said it needs to be formatted (do NOT format any of your cards using your Apple computer)

Download a free image recovery program like the Transcend RecoveRx and using it, recover the images that have become corrupted on your memory card

MacBook Pros usually only recognise Apple products

If all you need to do is copy photos from the camera to the computer, you don't need to fix that issue. Get a cheap USB card reader and use that to connect the camera's memory card directly to the computer's USB slot then use Finder to do the copying to know exactly where you put the photos and to be sure the quality does not change during the process.

I suspect, unfortunately, that you have not been following the explicit instructions (page 55 of the manual), which says the order of connection is computer ON, switch camera OFF, attach USB cord to both devices, switch camera ON. The software on the MBP (iPhoto or Photos, depending on the age of the MBP) will detect the connection and allow you to import photos.
The alternative is to take the SD card out of the camera (switch the camera OFF first!) and put it straight into the slot on the MBP. Again, iPhoto/Photos will detect the pictures directly. Before you remove the card, it is vital to use the software Eject in Finder. I suspect that you have not done that, which is why the card is now scrambled. Don't try and write anything to the card. Use a file recovery program to retrieve the missing pictures first, and then reformat the card in the camera, NOT in the computer.

You don'tknow what youre doing because you didn't follow the instructions in the Nikon manual

Man, ask a question, get a bunch of nasty responses.

AVDADDY is Idiot. If you don't want to respond, its OK but respond in nasty way

Hi there, do you know how can i use a Nikon D3100 as as webcam on a macbok pro? Thank you in advance.

Just so others are aware, I myself did everything according to the manual's instructions and my Macbook wouldn't recognize my D3400, nor did the driver automatically install (though, to its credit, the screen on my D3400 went black and recognized itself that it was being plugged up to something, lol). So I turned the camera *off,* removed the SD card, and popped it into the Macbook, which was accepted. So it seems that's the only quick method, though I don't like it because the darn card is so small and easily lost if dropped in my house.

I'm also have troubles connecting my Nikon D3400 to my MacBook Air. I've tried all of these suggestions and nothing is working?