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Re: Lens cap test...
Switch on camera into Shutter mode. Put lenscap over lens or block it so you get a black LCD. Have a look at that first. Only a general indication but if there ARE any bad pixels on the LCD they will be visible as coloured dots. Not too important as THAT doesn't affect the pic but personally I would not put up with it - took one back for exchange for that reason .. who wants to look at spots.
The CCD is the real one to look for. With lens still blanked off to a black screen set the shutter at 2 secs, take a pic then set at 4 secs, take another pic. You won't see much on the LCD so you should download those tests to your editior - Paintshop Pro, Photoshop or whatever. THEN you get a much bigger pic (black) to look at. You'll probably find at least one or two little spots, almost inevitable with many, but you should NOT get many and also very noticeably bad spots. If so , complain and exchange.
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Press the menu button and go to the shooting menu (the little camera icon). Scroll down to "movie settings." there are three quality settings. Select the one you want then try a test shot. The higher quality setting (1280 X 720 pixels) uses more memory. The default setting is 640 x 424 pixels and the lowest quality setting which uses the least amount of memory is 320 x 216 pixels. Sound is off by default so if you want to record sound with your video, you need to turn the microphone on in this menu as well.
Don't confuse pixels with bytes. A picture can have three million pixels and yet require less than a million bytes. The picture is stored in the JPEG format, which applies some data compression. As a very simple example, consider a picture taken with the lens cap on. It doesn't require many bytes to say "three million pixels, all completely black."
The cap is a plastic disk, usually black or silver, that snaps on at the end of the lens to keep the lens clean. Some lenses have two caps, one for each end when not attached to the camera.
Some cameras don't use a "loose" cap; those cameras generally retract the lens into the camera body and "close" a door in front of the lens.
Many, if not most, camera users do not use a cap (my guess).
The wide angle lens is generally an "optional" lens that can be used for group or scenery pictures when you want to shoot a "wide" picture. A "normal" lens is generally around 50mm (plus / minus 5mm). A wide lens is anywhere from 17mm to 24mm (or so).
1)Remove the lens from the camera. Put the body cap on the camera, and put the rear lens cap on the back of the lens. Make sure you are in a clean environment.
2)Take the rear cap off the lens and use the blower to blow large pieces of dust off the lens. Go around the entire rear part of the lens with the blower.
3)Dip the swab in the isopropyl alcohol or cleaning solution. You should use only a light amount; the best way to ensure this is to wear light vinyl gloves, like those used by health care providers, and squeeze the swab with your fingers after dipping it in the solution. Gently clean the contacts on the lens with the swab. After you have done so, use the blower on the lens contacts again.
4)Repeat the procedure on the contacts on the camera body.
5)Reattach the lens to the camera and test it to see if the error or focusing problems still exist. If they do, try cleaning the contacts again.
Electronic shutter in lens mechanism got bad and you need to replace complete lens assembly of DSC-S500 camera.
Of course new lens assembly would cost more then camera worth so best option is to buy new camera.
Your LCD is only a small preview screen. I have on many occasions tested a camera and viewed on the screen. When you view the image on a computer it is enlarged to a much larger image. If your pictures appear out of focus you may have a bad lens. Set your camera to the highest mega pixel rate and retake some test images. If these are blurred you have a bad lens.
First make sure you ddin't buy a Nikon 990...once that's confirmed,
take your S70 back! It sounds like you did all the correct tests to verify the pixels. I also did the test and my S70 passed with flying non-colors.
If you 've only had it for a couple of days exchange the thing for a brand new
one. Prove your point and have a photo ready of the dead pixels.
A stuck pixel on the LCD is quite common. I have one on my 2020z; lot of people here would tell you the same thing. Long as it's just one, I wouldn't bother trying to get new camera.
Far as the lens extension sound: It is a little loud, but a *grinding noise* doesn't sound normal. Go to a store and pick up another one, see if it makes the same sound. If not, you may have a bad camera.