Perfect! Thanks so much. I googled around a bit and didn't turn up anything so this is really helpful.

I’d like to write a Pythonista script to interact with RAW photos and allow me to make adjustments. From what I’ve read, it looks like there isn’t any way to do this without using objc_util, but I’m having some issues getting it working. Here’s the apple documentation which speaks to the Objective-C code needed: https://developer.apple.com/documentation/coreimage/cifilter/1438096-filterwithimageurl?language=objc

I tried the following, but it does not seem to work:

CIFilter = ObjCClass('CIFilter')
CIFilter.filterWithImageUrl_options_(imageURL=img, options=None)

Having never worked with Objective-C, I guess I’m just really confused on what that code should look like to get the right syntax in Pythonista.