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Raw - nef format
Hi, there. I have bought a new D70s, and have some questions:
- When does it pay to use the NEF format? The editing possibilities seem to be similar to JPG? - Which program do you recommend to edit NEF files? Aaron |
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On Wed, 04 May 2005 08:10:25 GMT, "Aaron Blacksmith"
wrote: Hi, there. I have bought a new D70s, and have some questions: - When does it pay to use the NEF format? The editing possibilities seem to be similar to JPG? NEF is Nikon's RAW format Advantage of RAW: * Slightly better latitude on RAW's (translates to you not needing to be quite so critical with the exposure value). Eg, it's possible to make exposure adjustments when importing the RAW without significant loss of data. With a JPEG, some of this data has already been discarded. * White balance choice can be overridden/changed when importing. With a JPEG it's too late - the image was coded using whatever white balance was in use at the time and some data may have been discarded as a result. (Okay if you got it right, but often you don't). * The RAW importer allows you to make adjustments to compensate for vignetting that may of occurred. This is more difficult to do to a jpeg. * The RAW file has no compression artifacts that are present in the JPEG, thus allowing editing without further quality losses. * As technology improves, RAW importers will get better. It's quite possible that in a few years time you can revisit your old RAWs with new software and get even better images from them. Previously encoded JPEGs don't really offer this possibility. Disadvantages of RAW: * Require conversion to a more standard JPEG or TIFF at some point prior to printing or display on third party hardware. Eg, you must have a workflow, and this workflow can take more effort than ones involving just JPEGs. * Are much bigger files than JPEG, so use up more card space. * Are proprietary format. Some people worry that after the third world war, the survivors will be too stupid to work out how to read rows of RGB data from a RAW file, but somehow be capable of devising a solution to decoding a JPEG file who's encoder used Discrete Cosine Transformation, Quantization Tables, Zig Zag Scan, Differential Pulse Code Modulation on DC component, Run Length Encoding on AC components and a splash of Entropy Encoding before it was written to the file. You might be able to tell, I don't buy this argument... and don't much care because I'll be dead anyway - and if I'm not, this'll be the least of my worries. - Which program do you recommend to edit NEF files? Photoshop. NOT Nikon's capture rubbish. Currently you can't 'save' an edited NEF in photoshop (probably not a bad idea really), best to save work-in-progress or masters as PSD files (photoshop's native format) and stuff ready to print as TIFF or JPEG. -- Owamanga! http://www.pbase.com/owamanga |
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