Image Processing with Aperture
Image Processing with Aperture
B&W negatives to positive photos
Re: B&W negatives to positive photos
Feb 4, 2012 7:57 AM (in response to Keith Worsley-Brown)
Hello Keith,
since your negatives are Black-and-White, a simple Automator Workflow may suffice to do the ground work of the negative-positive conversion.

Open Automator and select New -> Workflow
Set the Workflow to receive images in "Finder.app",
Add an Copy Finder Items action, disclose the triangle and edit the folder to save the converted images to,
Add an "Apply Quartz Composition Filter to Image", set the selector to "Color Invert", Luminance,
Add an "Apply Quartz Composition Filter to Image", set the selector to "Black and White",
Save the workflow and select a name.
Select an image in the Finder for a trial run. Press the "Run" button. The service should install itself automatically in your User Library in the "Services" folder.
Here is a sample run: The negative

The converted result:

I put the workflow here as a compressed zip file to download http://dreschler-fischer.de/scripts/BWNegative.workflow.zip
Regards
Léonie
P.S. If the quartz composition action should not be available in Automator, you may need to install Xcode from the AppStore.
Samstag, 4. Februar 2012