How do I change resolution??

New to Aperture...trying to change resolution

The resolution of what do you want to change? Do you want to display the images differently, or do ypu want to change the size of the imported image files inside Aperture?

Aperture supports a lossless workflow. You cannot change the resolution of images you imported to Aperture. If you need a version with a poorer resolution for a special purpose, you export an image files with less pixelsize.

Select an image and use "File > Export > Version" from the main menu bar. In the export dialog window pick an export preset with a smaller image size.

Regards

Léonie

The options in the Export > Version are either too small or too large.

Have you tried to set the Export preset to "Edit"? Then you can create own custom preset and pick any combination of pixel size and jpeg quality setting. That should give you the file size you want.

Regards

Léonie

Changing the ppi/dpi will only change the width and height of the image in cm or inches - the way the pixels will be spaces, but not the number of pixels, and thus the file size will not change, unless you set the size to pop-up to a small cm or inches value.

To create a smaller image file

• either pick a lower jpeg quality; this will result in a higher compression rate,
• or set the "size to" pop-up to "Percent of original" and pick a smaller percentage value
• or set the "size to" pop-up to "Fit within (pixels)" and specify the width and heights of the image size you want in pixels.

This way you can produce any image size in pixels you want.

Regards

Léonie

But the photos I emailed myself were EXACTLY the same (kb) size as the prevous set. Which, I realize, makes abslutely no sense.

What email program are you using to forward the photos?

The mail program may be set to compress the images and to reduce the file size.

For example, if you are using "Mail.app", check the "Image Size" pop-up.

Also, since you have Mt. Lion: Why not use "Air Drop" to transfer your images between two Macs? This way the images will not waste space in the mail box and mail downloads folder.

The Aperture User Manual has a little bit on exporting versions of images here:

http://documentation.apple.com/en/aperture/usermanual/index.html#chapter=21%26se ction=3

Take note of the "Export Preset" drop-down list. Export Presets are used to standardize exports that you do often. Presets are covered in this section:

http://documentation.apple.com/en/aperture/usermanual/index.html#chapter=21%26se ction=6

Any preset that says "original size" will export a copy of a 3000x2000 pixel (for example) image at 3000x2000 pixels. If you want to change that, choose a different preset, e.g. "JPEG - Fit Within 1024 x 1024" That will re-size the image so that the largest dimension is 1024 pixels, but the image retains the same aspect ratio. Our 3000x2000 pixel image would now be 1024x682 pixels. You can use these presets, or you can modify them and create your own. See the section called "Creating an Export Preset" for instructions.

I have one for another photo site that requires posted images to be not more than 700 pixels in any dimension. So I created a preset called "JPEG - Fit within 700 x 700", and use that. I've also created other exports, with and without watermarks, for HDTV presentation, for screen backdrops on different size screens, etc.

Message was edited by: Larry West

No, when you export, you are not creating a new project. You are creating new files outside of Aperture.

Are you using Aperture's presets? It could be the quality of the JPEG. Keep the "Image Quality" slider towards the right, about 10 or better.

The other thing you need to know about is the screen resolution of your Mac. I don't see which Mac you are using, or what display, but it is very possible that the 640x427 image is being blown up by the display driver to get to your 6"x4" size, and at the same time, the larger sizes are being made smaller. You may be trying to view that 640 pixel wide image across 1000 pixels or more. This makes the application, or the screen driver, have to interpolate, or "make up" pixels that don't exist.

When you go the other way, it is much easier to interpolate down from too many pixels to fewer pixels, and retain some or most of the original quality. That's why the larger images look better.