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If I crop a photo in iPhoto and set the aspect ratio to 3:7 - is it then possible to assign a width or a length (in pixels) to the photo such that the aspect ratio is still maintained at 3:7 ?
iMac 27″, macOS 10.15
So you need a two step process.
First crop the image in the 1:3 ratio.
Then with the image selected, on the file menu: File>export.
in the first pane, you select the image size and quality. In the size, choose custom, then height as 600 as shown in the screenshot.
When you click export, you get another pane to choose the folder to put it in.
So you need a two step process.
First crop the image in the 1:3 ratio.
Then with the image selected, on the file menu: File>export.
in the first pane, you select the image size and quality. In the size, choose custom, then height as 600 as shown in the screenshot.
When you click export, you get another pane to choose the folder to put it in.
Photos has no built in scaling/resize feature. The only way to resize (and then only to smaller dimensions) is to export.
So you can crop to 3:7 and then export with the width/length you need in pixels as long as it is lower than the pixels in the cropped image.
What are you trying to achieve? Do you want to save storage by scaling to the photo down? Photos will always preserve the original in addition to your cropped version, so you will not save any storage by downsizing the pixel size.
To replace the photo with a lesser quality version of a smaller pixel size you have to export it and import it again, as Tony explained. The file format of a photo can only be changed by exporting or sharing, when Photos will actually render a version of the cropped or adjusted photo.
Thank you both for your responses. What am I trying to achieve? I am attempting to learn html. and I thought it would be nice if I could assign an image to a particular element in a web page layout. More specifically, I have my layout as shown in the attachment. The white portion of the layout (which has dimensions W:200 X H:600 px and therefore an aspect ratio of 1:3) is what I would like to assign a background image to. So the idea was to crop a part of an existing photo at the 1:3 ratio ideally at the dimensions W:200 X H:600 px so that it would fit perfectly into the white portion of the layout. I'm still uncertain whether I can do this with iPhoto.
Oh wow professor Collinet! Thanks so much for that clear and concise reply. I have been beating my head against a wall for quite awhile now trying to find an answer for my dilemma. Now thanks to you I can control both parameters - aspect ratio and dimensions - just what I needed! Extra gratifying to know that it can all be done with what I already have, know and love - iPhoto. That was great!!
Darn! Forgot the attachment in the above posting. Here it is.
You're welcome - glad to help. 🙂
Scaling Photo While Maintaining Aspec
