I have few grey spots on all my photos..especcialy on the blue ,light gray or white..and deep blue ones I have the camera for 8 days now..and I keep having this problem toghether with a non Attached lens eror....is this a problem who ..normally can be solved..by chaging your camera?I mean..I really dont know how this works...the spot problems is not a thing to be solved on this camera ....must be changed...right?
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This is a common problem. The metering and light balance are the reasons that you are having problems achieving good results with your photos.
All cameras on the auto cycle are calibrated for 18% gray. Another words a photo of all white results in 18% gray. A photo of black results in 18% gray. The camera adjusts the shutter speed and aperture to achieve an average light level of 18%. That is why photos of snow always appear gray. To compensate for this characteristic of the cameras an 18 % gray panel is held in front of the camera and than the settings are set.manually. The metering in the camera is now locked and using the same light levels objects will be in their natural level.
A second problem is the white balance. Using flash avoids some of these problems. Adjusting the camera for source lighting type will help the most. The light balance is the cause of discoloration of the objects in the photo. Usually the camera white balance can be set for auto, incandescent, fluorescent, outdoor or flash,
Use a manual setting if it is available on you camera, You need to adjust the settings until you get acceptable results. If the photo is dark add light by reducing the aperture number to a lower number allowing more light. After the aperture is open wide(lowest number) increase the exposure to longer time. With very low light levels a tripod may be necessary.. After doing this once record the numbers for next time.
NOISY PICTURES One of the major
difference between a consumer digital camera and a digital Single Lens
(DSLR) is that the former produces images with a lot of noise when
ISOs and long exposure times, and the latter is practically noise-free
(though high ISO performance varies depending on camera manufacturer
and model). Noise
is apparent by the presence of color speckles where there should be
example, instead of a blue sky, you notice faint pink, purple and
speckles amongst the otherwise blue sky. read AT http://www.photoxels.com/tutorial_noise.html
If you have Photoshop:
Layer>New adjustment Layer>Levels
Use the middle eyedropper tool and click on something in your photo that should be gray/dark gray.
Use the white eyedropper (far right eye dropper) and click on something in the photo that you know is (or should be) white. You can try the gray first, then the white.
In addition, flash lighting dust doesn't make a white spot, but a fuzzy whitish circle (out of focus). The image underneath is still visible, but distorted. These are definitely not flash reflecting on dust.