I've slowly been accumulating 7000+ images in to my iPhoto library over the last five years. The library size has grown to 50GB. (including videos)
These photos have come from various makes and models of cameras over the years: Sony, Sanyo, Casio, HP as well as different megapixel levels: 3MP, 4MP, 7MP, 10MP, 12MP.
I've noticed that after importing a photo, if I view it in iPhoto or Preview, that simply saving it REDUCES the file size significantly. An example is a 4MB photo sometimes goes down to 1.3MB. I have compared the two images in Preview after saving and cannot see any difference. I know about JPG compression etc. but am not sure that this is what's happening. Do some cameras have larger file sizes than are needed?
Try opening an image in Preview, rotate it right 90 degrees, then left 90 degrees. Save it and look at the file size shrink. Am I losing quality?
I'd like to shrink my iPhoto library, is this a way to do it or will I be losing quality? If I cant see a difference, should I care? I know nothing about images, quality etc.
Thanks
These photos have come from various makes and models of cameras over the years: Sony, Sanyo, Casio, HP as well as different megapixel levels: 3MP, 4MP, 7MP, 10MP, 12MP.
I've noticed that after importing a photo, if I view it in iPhoto or Preview, that simply saving it REDUCES the file size significantly. An example is a 4MB photo sometimes goes down to 1.3MB. I have compared the two images in Preview after saving and cannot see any difference. I know about JPG compression etc. but am not sure that this is what's happening. Do some cameras have larger file sizes than are needed?
Try opening an image in Preview, rotate it right 90 degrees, then left 90 degrees. Save it and look at the file size shrink. Am I losing quality?
I'd like to shrink my iPhoto library, is this a way to do it or will I be losing quality? If I cant see a difference, should I care? I know nothing about images, quality etc.
Thanks
