05-16-2012, 11:57 PM
I have used IrfanView earlier, it's an easy to use and completely free program that also does batch conversion. However, when working with JPG files one must remember that the allready compressed JPG image will loose additional info every time it's saved, thus reducing the image quality if altered and saved repeatedly.
That's why I like to edit my pics uncompressed, where quality loss isn't an issue. I allways shoot in RAW mode, and use the Canon software that came with my camera to edit and crop the pics. Finally, when everything is done, I export the finished uncompressed pic to Adobe Photoshop Elements, reduce the pic size (number of pixels) and save it as a JPG file. I could also do this in the Canon software, but I just like the options in Photoshop better, where I can adjust the compression, compare the compressed pic with the original, and instantly see the file size -before- the file is saved.
Compression is a matter of compromise, you can't reduce the file size without also reducing something else, whether it be the image size in pixels or the image quality.
Svein
That's why I like to edit my pics uncompressed, where quality loss isn't an issue. I allways shoot in RAW mode, and use the Canon software that came with my camera to edit and crop the pics. Finally, when everything is done, I export the finished uncompressed pic to Adobe Photoshop Elements, reduce the pic size (number of pixels) and save it as a JPG file. I could also do this in the Canon software, but I just like the options in Photoshop better, where I can adjust the compression, compare the compressed pic with the original, and instantly see the file size -before- the file is saved.
Compression is a matter of compromise, you can't reduce the file size without also reducing something else, whether it be the image size in pixels or the image quality.
Svein