TAILIEUCHUNG - Complete Guide to the Nikon D200- P12

Complete Guide to the Nikon D200- P12:As with all my books, a full draft was reviewed by volunteers to weed out unclear language and misstatements. This book is better because of them. | Normal a moderate amount of unsharp masking is applied to the image. Again the D200 documentation makes no claims to the amount though the D1 documentation claims that this is about equivalent to the 80 Amount setting in Photoshop. Under extreme magnification the camera s rendition is cruder and more readily detected than Photoshop s though probably due to the radius chosen . Medium High a little more sharpening than Normal. High a large amount of unsharp masking is applied to the image. On the D1 Nikon claimed this is about equivalent to the 120 Amount setting in Photoshop. Auto the camera decides what level of sharpening to use. The manual says that this is based upon the subject and vary shot to shot which isn t very helpful in understanding what the camera might be doing. Note While I ve given the relative Photoshop amounts Nikon claimed for the D1 it appears that the D200 uses less intensive settings probably to keep noise from becoming an issue. Note If you re shooting JPEG images the above parameters are used to apply sharpening to the actual pixel data that is saved in your image file. If you shoot NEF the tag for the sharpening value is stored in the EXIF data and the data is left untouched. However note that programs such as Nikon Capture often use the camera tags as the default setting for conversion so unless you override the sharpening value in your NEF conversion program sharpening may be applied by the program That s one reason why I sometimes suggest setting sharpening to None if you shoot NEF images. Sharpening is usually applied twice to images only one of these potentially occurs in camera . The first sharpening is used to compensate for the anti-aliasing fuzziness that is inherent in digital image acquisition due to high frequency sampling. I d argue that this sharpening should be minimized as much as possible. Thom Hogan s Complete Guide to the Nikon D200 Page 331 A final sharpening should only be applied to an image when you know .

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