If you are referring to camera settings, then to save space on the memory card. It has no other purpose.
Resolution of image is used to determine the quality of image in digital camera.
Digital image is depending on the camera resolotion, where optical image depends on the quality of the film. Normally an optical image will be better then a digital image, unless you are using high end digital camera. I hope this helps, Icko www.rtgallery.com
zoom is to enlarge the image and capture in a digital camera
It depends upon the Megapixels in your mobile phone camera. If you want good quality photos, it is better to buy a digital camera, since pictures taken with a digital camera have more clarity, and color depth. Also features such as flash, and image stabilization work much better in a digital camera.
You will need at least a 7.2MP digital camera in order to be able to print professional quality prints. Here is a great site to look over. www.photoshopessentials.com/essentials/image-quality/
I can't but according to me it can be a digital camera.
It all really depends what size of digital print you are wanting to make. The larger the print the higher the resolution needs to be so that the image is not fuzzy. I would visit www.photoshopessentials.com/essentials/image-quality/ and read the tutorial about how the resoultion of your digital images affects image quality when printing.
Digital camera and video camera provide image data.
When considering a digital camera you will need to assess what kind of media us will use it for, what quality of picture you are after (pixels), and what you are willing spend. Image quality and prices can vary widely between dv cameras. One perk about using digital video is that it can vary to be viewed on either personal computers or the internet without any pixel degradation because the image quality will always consistently stay the same.
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Yes, the Nikon D90 Digital SLR has image stabilization.
Yes, most digital cameras will allow you to change the quality of the pictures you're taking. Some digital cameras will even allow picture editing and camera effects for the pictures you're taking.