If your camera is supported and setup correctly but dslrBooth can't connect to it or loses the connection after a while, there are a variety of reasons this can happen but here are the likely causes:
- USB cable is damaged or low quality. Connect the camera using a high quality usb cable and not an HDMI cable.
- The usb cable is too long.
- The usb cable is defective.
- The usb hub you are using is defective or cannot supply enough power.
- The camera power adapter is defective or not supplying enough power. Use genuine Canon/Nikon power supply instead and retry.
- The power supply to the camera is interrupted.
- The camera is set to turn off after a specific duration.
- Windows turns off power to USB ports after a period of time. See Disable Power management for USB Device and this article.
- The USB port on the computer or camera is damaged.
Things to try:
- Try a different, shorter usb cable. Preferably the one that came with the camera.
- Plug the usb cable directly to the computer and not through a hub.
- Try a different usb port.
- Replace the camera power adapter.
- Close any other photography software such as Adobe Lightroom or Mac Photos.
- Put your camera on Manual Mode.
- Go to Settings, Camera Settings, change all the settings for both Photo and Video.
- Use a fully charged battery and not a power supply. Some power supplies are known to cause issues.
- Close EOS Utility
- Turn off Wifi mode if available.
- Set the Mode Dial to Manual (M).
- Set Live View Shoot. to Enabled.
- Set Live View shooting AF mode to Quick mode.
- Set live view shooting settings, metering timer to 30 minutes.
- If using Rebel XT/350D, 20D or EOS 5D, Set the camera to 'PC Connection' mode.
- Close Nikon Camera Control as well as other apps that might be connecting to the camera.
- If using an older Nikon camera such as the Nikon D40 or earlier, make sure camera setting for USB Mode is PTP.
Windows 10 N Edition
Checkout the following support article if you're using Windows 10 N edition.