Is Editing Digital Photography Images Safe for Image Quality?
Friday, April 17th, 2009 Subscribe To Our Feed
People that say tiff is the most appropriate format for picture editing are not as right as they claim.
In fact, when you first got your pictures from the camera, transforming them is never the first step. The image is stoked onto your hard drive in a compressed format, named JPG. But in the working memory, it becomes an uncompressed bitmap each time you open it and start working on it. deciding if you want a jpg or png or tiff or other extensions should be a worrying matter only when you are prepared to save the changes. If the editing programs remains open, and you make a tiff save, the computer will use tiff compression methods to save a copy on the hard drive, but the original uncompressed image in still unchanged. Only the saved JPG has less information because of the compression, what is located in the computer’s memory is unchanged as long as you save the file under a new name.
This problem is questioned by people that make saves during editing so they have a good restoring point that can show some progresses. Make the intermediary saves in a digital photography format that stores high quality, maybe even uncompressed images , but also leaves the edited file intact, without flattening and closing layers. The best thing is to choose the format that is recommended by the editing software you are currently using. This way, all changes become editable and reversible when you open the saved image again. Only when you are done editing you can same the image in a conventional format like JPG for online photo sharing, TIFF for images that are meant to be printed at high resolutions and so on.
Another myth that is not true is the one that states cropping a digital photography image can modify its pixels. Rotating and resizing the image will produce the generation of a new image, based on the old one, and the result will be better or worse depending on the algorithm used. It’s obvious that enlarging algorithms that will enlarge only by pulling pixels until they become visible are algorithms that decrease image quality. photo printing services
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