Very nice, Paco. You have not tried in on the Z6 yet?
Tried. Working with natural light, silent shooting and the 50mm 1.8 the shooting itself was very easy and fast. Using the Zerene program is going to take much longer. This is an image without retouching. I did use photoshop for contrast and exposure adjustments.
The camera arrived today by mail. I couldn't help myself. A few quirks but definitely usable and a joy to play with.
Z6, 50mm 1.8S, zerene stacker, in camera focus shift function