I have a Macbook Pro laptop, OSX 10.9.5. The iPhoto software will not download raw files from my Panasonic Lumix DMC-ZS50 digital camera. iPhoto downloads the jpeg files fine.

You don't need a driver.

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use iPhoto or any other photo cataloging program.

Mac video formats are not compatible with PC video.

It's not the firmware, it's the software on your computer. You need to update Adobe Camera RAW. You can get it here for Windows or Mac.

If the videos were shot in AVCHD Lite, Macs can't read them. I have the same problem. My two solutions are: 1. I can download them to my wife's pc with PHOTOfunSTUDIO installed. 2. I can transform them and burn to DVD using Toast Titanium 10 on my Mac.

Consider NOT connecting your camera to your computer. The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use iPhoto or any other photo cataloging program.

Nikon's software supports Raw directly. There are 3rd party raw downloaders available for windows machines, probably have Mac versions too. Google for raw file software.

For one pic at a time, bring up the pic you want to delete and press the button with the trash can icon. Follow the on-screen instructions. To delete all pictures at once, just go into the menu and find "format"...follow the on-screen instructions.

Do what the pros do...use a card reader.

It's possible that Photoshop hasn't issued a plug-in for your camera. Check with them. Didn't you get some software with the camera to read the raw files?

Try using "Image Capture," it's an application that comes with Leopard, located in the applications folder. It might do the trick.