Pictures too dark

Could be your camera is still working, but some settings are messed up?
You could have turned off the display. In the menu with IMAGE DISP. Is used to save battery power.
Then try making pictures in the mode automatic. Because if you switched to scene like bright sunlight or snow your pictures can be very dark.

Load up the ATG Canon EOS Utility on your camera & check by shooting tethered. Then view it on a big screen,

make sure flash is on your flash on cam is sticking.

That would explain the darkness if the lens is stopped down. It would seem the aperture control is faulty on the camera body. Normally, the aperture remains open until you take the picture. It is only closed down while the shutter is open.

I had the same problem before. Did you check to make sure your exposure compensation wasn't set at a negative number? half press the shutter and rotate the large dial on the back of the camera to change the exposure to 0. If this just changes your auto focus points, you have to change your custom function 13 from a value of 2 to 0 and then try half pressing the shutter and rotating the large dial in the back again. This fixed my problem with shooting in P mode (which I only used when absolutely necessary) and I hope it helps you.

Do you have a polarizing filter on the lens?

Try using the night mode on your FZ10, but use a tripod.

The shooting modes are described as follows: AUTO (Factory default setting) Auto mode is used for regular photography. The camera automatically makes the settings for natural color balance. Other functions, such as the flash mode and metering, can be adjusted manually. Portrait Portrait mode is suitable for taking a portrait-style picture of a person. The camera automatically sets the optimal shooting conditions. Night scene Night scene mode is suitable for shooting pictures in the evening or at night. The camera sets a slower shutter speed than is used in normal shooting. If you take a picture of a street at night in any other mode, the lack of brightness will result in a dark picture with only dots of light showing. In this mode, the true appearance of the street is captured. The camera automatically sets the optimal shooting conditions. If you use the flash, you can take pictures of both your subject and the night background. SCENE Scene mode enables you to select one of the following scene shooting modes available in the menu. Landscape + Scene shooting Landscape + Scene shooting is suitable for taking pictures of landscapes and other outdoor scenes. This mode produces clear, sharp pictures with excellent detail, making it ideal for shooting natural scenery. Landscape + Portrait shooting Landscape + Portrait shooting is suitable for taking photos of both your subject and the background. The picture is taken with the background as well as the subject in the foreground in focus. The camera automatically sets the optimal shooting settings QuickTime Movie Quicktime Movie mode lets you record movies. The focus and zoom are locked. If the distance to the subject changes, the focus may be compromised. Landscape Landscape mode is suitable for taking pictures of landscapes and other outdoor scenes. The camera automatically sets the optimal shooting conditions. Self-portrait Self-portrait mode enables you to take a picture of yourself while holding the camera. Point the lens towards yourself, and the focus will be locked on you. The camera automatically sets the optimal shooting conditions. The zoom is fixed in the wide position and cannot be changed. My Mode Enables you to make settings manually and register them in the mode dial's mode so you can call up your own shooting mode whenever you want. Program shooting (P) Program shooting allows you to shoot using an aperture and shutter speed that the camera sets. You can set the flash, white balance, or other functions manually. Aperture priority shooting (A) Aperture priority shooting allows you to set the aperture manually. The camera sets the shutter speed automatically. By decreasing the aperture value (F-number), the camera will focus within a smaller range, producing a picture with a blurred background. Increasing the value will let the camera focus over a wider range in the forward and backward directions, resulting in a picture in which

Program Auto (Factory default setting) Program Auto mode is used for regular photography. The camera automatically makes the settings for natural color balance. Other functions, such as the flash mode and metering, can be adjusted manually. Portrait Portrait mode is suitable for taking a portrait-style picture of a person. The camera automatically sets the optimal shooting conditions. Landscape + Portrait Landscape + Portrait mode is suitable for taking photos which include both your subject and the landscape. The camera automatically sets the optimal shooting conditions. Landscape Landscape mode is suitable for taking pictures of landscapes and other outdoor scenes. The camera automatically sets the optimal shooting conditions. Night scene Night scene mode is suitable for shooting pictures in the evening or at night. The camera sets a slower shutter speed than is used in normal shooting. If you take a picture of a street at night in any other mode, the lack of brightness will result in a dark picture with only dots of light showing. In this mode, the true appearance of the street is captured. The camera automatically sets the optimal shooting conditions. If you use the flash, you can take pictures of both your subject and the night background. Indoor Indoor mode enables you to take pictures while indoors by allowing the flash to reach farther away. Beach & Snow Beach & Snow mode enables you to take pictures of scenery containing white sand or snow. Cuisine Cuisine mode enables you to take pictures of food by increasing the saturation, sharpness and contrast settings to take sharp, vivid pictures of the subject. Self-portrait Self-portrait mode enables you to take a picture of yourself while holding the camera. Point the lens towards yourself, and the focus will be locked on you. The camera automatically sets the optimal shooting conditions. The zoom is fixed in the wide position and cannot be changed. QuickTime Movie QuickTime Movie mode lets you record movies with sound. The focus and zoom are locked. If the distance to the subject changes, the focus may be compromised.

The shooting modes are described as follows: PROGRAM AUTO (Factory default setting) Program Auto mode is used for regular photography. The camera automatically makes the settings for natural color balance. Other functions, such as the flash mode and metering, can be adjusted manually. Portrait Portrait mode is suitable for taking a portrait-style picture of a person. The camera automatically sets the optimal shooting conditions. Landscape Landscape mode is suitable for taking pictures of landscapes and other outdoor scenes. The camera automatically sets the optimal shooting conditions. Night scene Night scene mode is suitable for shooting pictures in the evening or at night. The camera sets a slower shutter speed than is used in normal shooting. If you take a picture of a street at night in any other mode, the lack of brightness will result in a dark picture with only dots of light showing. In this mode, the true appearance of the street is captured. The camera automatically sets the optimal shooting conditions. If you use the flash, you can take pictures of both your subject and the night background. Self-portrait Self-portrait mode enables you to take a picture of yourself while holding the camera. Point the lens towards yourself, and the focus will be locked on you. The camera automatically sets the optimal shooting conditions. The zoom is fixed in the wide position and cannot be changed. QuickTime Movie QuickTime Movie mode lets you record movies. The focus and zoom are locked. If the distance to the subject changes, the focus may be compromised.