Digital Cameras Using Tips (3)
16. What kind of camera do I need to print out a 4 x 6 inch image or a 8 x 10's?
Here's a simple way of answering this question: Print Szie Minimun Resolution Needed
4 x 6 inch,
5 x 7 inch 2 Megapixel
8 x 10 inch 3 Megapixel
Lager than 8 x 10 inch 4+ Megaoixel
A four Megapixel camera will not make better 4 x 6 inch prints than a 2 Megapixel camera. However, it does capture a lot more detail, allowing you to crop your image while still maintaining enough resolution for a high quality prin
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17. What sort of problems will I have with rechargeable batteries?
Rechargeable batteries lose their charge sitting in the camera. Ni-MH batteries lose between 1% - 4% of their charge a day. Since many cameras start reporting a low battery at 80% of full charge, the batteries could be reported low in as little as ten days. This number will vary greatly depending upon the age of the battery, temperature, and camera.
Memory effect was a problem with older Ni-Cd batteries. This problem has been reduced with newer batteries and chargers, though how you use your batteries may also impact performance. Ni-MH batteries do not have this problem, nor do the Li-ion batteries
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18. What's the difference between optical zoom and digital zoom?
It's important to understand this difference, as you could end up mighty disappointed with the results if you get one rather than the other.?/p>
Optical zoom is similar to what you'll find in a regular 35mm camera: When you push the button to zoom in or out, physical lens elements move inside the camera, to achieve the desired effect.
Digital zoom, on the other hand, has no moving parts. Using the "electronic brain" within the camera instead, the camera takes a look at what it's "looking at", and digitally zooms in, usually two to four times closer.
The problem with digital zoom is that you lose quality when you do this -- your images will tend to be more "pixelated" than the same image taken with an optical zoom camera. This is due to the "interpolation" the camera uses, which is a nice way of saying that it makes a guess about how the picture should look while zoomed in. Having optical AND digital zoom on a camera isn't bad, but we suggest try to avoid cameras with only digital zoom
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19. Why is there a delay after I push the shutter release button before I can take another picture?
There are many reasons for this delay. The camera must:
Set the focus, exposure time, white balance, etc.
Charge up the CCD
- apparently it can't hold the charge for long, so it does it right before you shoot
Copy the image out of the CCD into RAM.
Compress the image after it's been taken
Write the image to the flash memory.
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20. Why my camera reports a low battery after only ten minutes of use?
Digital cameras are power high-drain devices. They will take the life out of your battery, particularly if you take a lot of pictures in rapid succession. It is not uncommon for some digital cameras to report a low battery after only ten minutes of use, if you are using the flash and the LCD display at the same time.
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21. Will a high resolution camera make better prints than a lower resolution camera?
To be more specific: will you get better 4 x 6 inch prints from a 3 or 4 Megapixel camera versus a 2 Megapixel camera? Possibly, but the average person won't notice. The real advantage of a higher resolution camera is that with the larger image size, there's more room to crop images. In terms of quality though, it's not a huge deal. At print sizes like 8 x 10 inch, you will notice a difference.
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22. Will an airport X-Ray scanner erase my pictures on a digital camera card?
No, the chance of this happening is very remote
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