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| Q.No.1338: | What's the difference between "image size" and "image quality"? |
| Ans : | Image Size Images are made up of collections of pixels (dots). In general, the more pixels an image contains, the greater its size. The larger the image (progressing from VGA through XGA to full size), the clearer the result when the photograph is enlarged on a computer monitor or printed at a larger size. File sizes increase as images become larger, with the result that the number of images that can be recorded on a single memory card decreases. Image Quality When storing photographs, a digital camera compresses the data to reduce file size. Compression does not affect the number of pixels (dots) in the image. As compression increases from FINE through NORMAL to BASIC, file sizes decrease; at the same time, however, the fidelity with which fine details are reproduced also decreases and the potential for "noise" (image artifacts not present in the original subject) increases. Images recorded at a setting of HI are not compressed, meaning that fidelity is not reduced; note, however, that the files produced are extremely large. |
| Note: |
We recommend that photographs that are to be printed at anything between postcard and
about A4 size be taken at an image-size setting of "full." |