The camera will not take a picture (no shutter release).

Follow these steps to troubleshoot the issue.

IMPORTANT:

• If an error message or icon is displayed in relation to this issue, refer to the instruction manual of the camera for model-specific information.
• Because each of these steps represents a possible solution to this issue, check the status of the camera status after each step.

1. Make sure the inserted battery is fully-charged.
2. Make sure the camera is powered on.
3. Make sure the lens is properly attached.
4. Make sure Drive Mode is not set to Self-Timer.
5. If the built-in flash is being used, it will need to recharge before another picture can be taken.
6. When using the Cont. Shooting mode, wait until the image data is written to the memory card before shooting the next picture.
   
7. If the inserted recording media has a write-protect or lock switch, set it to the OFF or UNLOCK position.
8. Make sure the recording media is properly inserted in the camera.
9. If using Autofocus (AF), do the following:
   1. Press the shutter button down halfway.

      NOTE: Pressing the shutter button down halfway allows the camera to focus automatically. A flashing green indicator will be visible in the LCD or viewfinder. When the indicator stops flashing, focusing is finished and the camera is ready to take the picture. The shutter cannot release until the picture is in focus.

   2. Press the shutter button all the way down to take the picture.

IMPORTANT:

• Some cameras have a Priority setup option in the menu. If your camera has this option and if it is set to Release, you can force the shutter button to take a picture without autofocusing. However, if you change scene modes on the mode dial or turn off the power, the camera will default back to the previous auto focus mode. Thus, you need to select Release each time you change to a different scene mode or power the camera off and on.
• If attaching the camera body to an astronomical telescope or other similar device, (depending on your camera) it will be necessary to do one of the following:
  1. Set the mode dial to Manual (M).
  2. Set the Release w/o Lens option in the camera menu to Enable.
  3. Set the Shutter lock option in the camera menu to Off: no lens.

If it's still not working, service may be required.