Comments on: Resizing Photos in iPhoto for the Web http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/ Apple Mac OS X Tips and Tricks Blog Fri, 21 Nov 2008 20:36:10 +0000 http://wordpress.org/?v=2.6.2 By: lizzie http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-58308 lizzie Fri, 31 Oct 2008 20:27:28 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-58308 I have the same question as Laura, I need to get an exact size 750x500 how can I do this? I have the same question as Laura, I need to get an exact size 750×500 how can I do this?

]]> By: Val http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-57810 Val Mon, 27 Oct 2008 01:21:52 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-57810 VERY HELPFUL! THX. VERY HELPFUL! THX.

]]> By: Laura http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-55435 Laura Wed, 08 Oct 2008 21:43:22 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-55435 I tried following the instructions... but I need to adjust the pixel size to 880 x 220... how can I change the aspect ration so that it will allow me to do 880 x 220 instead of auto-populating either the width or the height. For ex., when I type in 880 the system auto populates 660 for a 4:3 ratio. I tried following the instructions… but I need to adjust the pixel size to 880 x 220… how can I change the aspect ration so that it will allow me to do 880 x 220 instead of auto-populating either the width or the height. For ex., when I type in 880 the system auto populates 660 for a 4:3 ratio.

]]> By: Craig http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-36840 Craig Tue, 03 Jun 2008 20:43:54 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-36840 Sorry, but you have repeated a fundamental myth about web graphics...that they need to be 72dpi. 72dpi comes from the first days of the Mac computer when the screen was 72dpi and so to get a one to one correspondence from the screen to the printed page this became a kind of standard for desktop publishing. Now days most screens are around 100dpi. The file size of an image is determined only by its pixel dimensions and amount of compression. A 1024X768 image at 300 dpi is exactly the same size as a 1024X768 image at 72 dpi. Dpi is only relevant when printing an image. The 300 dpi image will print much smaller than the 72 dpi one. I usually have to show people in Photoshop that this is true because the 72dpi mantra has been so often repeated. If you only change the dpi you will notice that the pixel dimensions and file size increases. If you then change the pixel dimensions back to what they were you will see that the file size returns to the same value. One benefit of keeping an image at a high dpi is that if someone where to download it and try to print it it would probably be so small they wouldn't be able to use it. Sorry, but you have repeated a fundamental myth about web graphics…that they need to be 72dpi. 72dpi comes from the first days of the Mac computer when the screen was 72dpi and so to get a one to one correspondence from the screen to the printed page this became a kind of standard for desktop publishing. Now days most screens are around 100dpi. The file size of an image is determined only by its pixel dimensions and amount of compression. A 1024X768 image at 300 dpi is exactly the same size as a 1024X768 image at 72 dpi. Dpi is only relevant when printing an image. The 300 dpi image will print much smaller than the 72 dpi one. I usually have to show people in Photoshop that this is true because the 72dpi mantra has been so often repeated. If you only change the dpi you will notice that the pixel dimensions and file size increases. If you then change the pixel dimensions back to what they were you will see that the file size returns to the same value. One benefit of keeping an image at a high dpi is that if someone where to download it and try to print it it would probably be so small they wouldn’t be able to use it.

]]> By: Gudrun http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-29231 Gudrun Fri, 11 Apr 2008 18:19:56 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-29231 thank you, thank you! This simple, straightforward tip has just saved me a great deal of time. All I needed to do was make some images smaller to post in an ad on Craigslist and I kept finding sites that wanted to go into all the math and science behind image size. Thank you for being direct and to the point! Out of curiosity, do you know anything about photographing food? That is my next challenge.... thank you, thank you! This simple, straightforward tip has just saved me a great deal of time. All I needed to do was make some images smaller to post in an ad on Craigslist and I kept finding sites that wanted to go into all the math and science behind image size. Thank you for being direct and to the point!

Out of curiosity, do you know anything about photographing food? That is my next challenge….

]]> By: steveblue http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-20803 steveblue Sun, 13 Jan 2008 16:24:22 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-20803 Kat, Photoshop is more appropriate for this kind of Image Handling. If you change the resolution to 300dpi in Photoshop, it will automatically calculate the Image Size. You must sacrifice the image dimensions and make it a smaller image to get a higher DPI. It works on the same ratio. So if you are going from 72dpi to 300dpi, this is a 4.16X magnification in resolution. The image size would then need to be divided by this same amount. So, if the width of the image was 3,692 pixels, The new width would become 887.5 pixels. This will scale the image without distortion. To scale from 72dpi to 300dpi without sacrificing image size uses a process called Vectorization. You must actually create new pixels where there were none before. This is a complex process. I do not know much about this... Kat,

Photoshop is more appropriate for this kind of Image Handling. If you change the resolution to 300dpi in Photoshop, it will automatically calculate the Image Size. You must sacrifice the image dimensions and make it a smaller image to get a higher DPI. It works on the same ratio. So if you are going from 72dpi to 300dpi, this is a 4.16X magnification in resolution. The image size would then need to be divided by this same amount. So, if the width of the image was 3,692 pixels, The new width would become 887.5 pixels. This will scale the image without distortion.

To scale from 72dpi to 300dpi without sacrificing image size uses a process called Vectorization. You must actually create new pixels where there were none before. This is a complex process. I do not know much about this…

]]> By: kat http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-20740 kat Sat, 12 Jan 2008 21:24:25 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-20740 Okay, how about the reverse ... what if I have a large image in 72 dpi. A site is requiring a smaller size (get how to do that now--thanks!) but at 300 dpi. Any ideas? Okay, how about the reverse … what if I have a large image in 72 dpi. A site is requiring a smaller size (get how to do that now–thanks!) but at 300 dpi. Any ideas?

]]> By: steveblue http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-178 steveblue Mon, 06 Nov 2006 05:38:39 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-178 If I select File Export and go to the web page tab, select the proper dimensions, and select Export. This process will make a website, with images that are 72 dpi. If I select File Export and go to the web page tab, select the proper dimensions, and select Export. This process will make a website, with images that are 72 dpi.

]]> By: Annemarie http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-177 Annemarie Mon, 06 Nov 2006 02:37:17 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-177 But how do I change an image from 300 dpi to 72 dpi in iPhoto? I have a bunch of images set at 300 dpi for printing but cannot see where i can change them to 72 dpi in iPhoto for uploading to the web. Thanks But how do I change an image from 300 dpi to 72 dpi in iPhoto? I have a bunch of images set at 300 dpi for printing but cannot see where i can change them to 72 dpi in iPhoto for uploading to the web.

Thanks

]]> By: AJ http://iuseapple.com/blog/apple-how-to/beginner-os-x/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-172 AJ Mon, 16 Oct 2006 18:15:32 +0000 http://iuseapple.com/blog/iuseapple/2006/10/12/resizing-photos-in-iphoto-for-the-web/#comment-172 that was very helpful. I was trying to figure this out for a bit. The only way I could find is to send it as an email, it then let me resize it then. Your method is obviously better this I can just resize it and do what I want with it. that was very helpful. I was trying to figure this out for a bit. The only way I could find is to send it as an email, it then let me resize it then.

Your method is obviously better this I can just resize it and do what I want with it.

]]>