Trying AgX

Before an upgrade of our webhosting company took down our blogs a week ago, I was trying a new darktable image converting algorithm (or tone mapper) called “AgX” – see and read more about it here, here, or here.

Technically, it’s probably the most advanced one I’ve seen so far. From a user’s standpoint, you’ll really have to learn the thing – without changing any settings, a picture I took with my Olympus camera and Mitchie’s Panasonic lens looks like this:

7ea_5297291-bella
Bella the cat, Mörfelden-Walldorf 2026

A wide tonal range for sure, with no blown-out highlights, and it’s as neutral as I could think of – but is it pretty? Here’s the out-of-cam jpg pic for comparison:

OLYMPUS DIGITAL CAMERA

Nicer greens and greys, a lot more contrast, and more life-like also if I remember that correctly – although some of Bella’s white fur is about to “clip” (be overexposed). It would take some work to make the AgX conversion look like Olympus’ special sauce in their in-camera “developer”, in case you’d want that.

But interesting it is without any question, so let me read about the thing a bit more, and also experiment with it – I think it has deserved that. Thanks to all developers of free and open source stuff like this, it’s really appreciated!

To you, like always, thanks for viewing, and for reading.

Leave a Reply

Your email address will not be published. Required fields are marked *