Is Editing Digital Photography Images Safe for Image Quality?
Posted on March 31, 2009
Filed Under Camera Problems, Canon Problems | Leave a Comment
People are usually afraid of working of plain Jpeg on their PCs after they collect them in that format from their digital photography apparatus, and are inclined in directly transforming them to tiff.
If you want to edit your pictures, the truth is there are many more stages you have to go though before editing the format. Usually camera save pictures as JPG, and this is the format you will see on your hard drive But the Pc’s virtual memory will unravel the image when you open it. Only at the time you want to save the edited image from you PC’s virtual memory you might raise the problem of file format: jpg, gif, tiff, png and so on. 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. The only quality changes are visible in the saved JPG, with because of the compression it’s normal to have less information.
The main idea is that you should make intermediary saves while you work, so you can get a sort of restore point, from witch you can continue work in case something goes wrong. These intermediary save will always be done under a format that is especially made for editing, that saves both quality and allows changes to become editable. 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.
Some people believe that if you crop in any way an image you will lose quality. 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. There are shrinking algorithms that eliminate extra pixels, and enlarging ones that make the pixel dots bigger. photo printing services
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