I notice this when the screen displays lighter images such as sky blue images. I think I got a lemmon . T.V. is past warranty so I guess I am screwed ! I cleaned the screen and does not help . I am on disability which makes a expensive repair impossible . Won`t ever buy a sony T.V. again .
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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
Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!
The spots are dust on your sensor. You can clean these yourself but you must learn the techniques first. Google the words...cleaning a DSLR sensor. You will be taken to sites which will explain in detail how to do it and what supplies you will need. It may seem daunting at first, but it is really easy once you know how.
If by saying the upper right corner of the lens you really mean that there is a dark spot on each image AND the rear display, there may be dirt or dust on the lens itself. Clean the lens with an optical quality cleaner. Do not use paper towels and Windex or the like - as paper towels can scratch the lens.
It is also possible that the dark spot is a "stuck pixel" on the image sensor inside the camera. There is no way to repair a stuck pixel outside of replacing the sensor. Any dark spot (regardless of source) can be edited out by using image editing software. This will allow you to to make the dark spot less noticeable - or practically invisible.
If the dark spot is on the rear display only, it can also be a result of a "stuck pixel" on the display itself. This should not show up an images, but only on the display. There is little that can be done outside of replacing the entire rear screen.
There are other things that can cause these problems, but those listed above are the most common.
I do not think the Dog broke anything. I do think though the Optical Block assembly needs to be replaced to fix the problem. Do to the cost of repair, I would contact Hitachi to see if they could assist you in the cost and recommending a Service Facility near you to do the work.
I hope this helps,
The two pictures were shot at dramatically different exposures - the "dark" one at 1/1600 shutter speed, f7.3, the "light" one at 1/320 shutter speed, f4.0. This accounts for the great difference, as the exposure conditions for the "light" one allowed much more light into the image during the exposure period. You didn't tell the whole story of how you set this up, I think you were shooting in a "spot" metering mode, where the particular exposure conditions the camera uses would vary considerably whether you were aiming at a dark area (making the picture light) or a light area (making the picture dark).
I would make two recommendations: Switch your metering mode to "center weighted" (the mode labeled "[(•)]"), and also change your ISO setting to AUTO, as there would be no reason for shooting these photos at ISO 200 that I can think of.