How to center the caption of a picture with a photographer on a single line.

Also, a center tab’s  position would be half the width of the text fame, which could be scripted if the caption widths are always changing:

//With the cation text selected:
var s = app.activeDocument.selection[0];
var tf = s.parentTextFrames[0]
var b = tf.geometricBounds
s.tabStops[0].position  = (b[3]-b[1])/2

HI @dublove:

I like Steve's suggestion to define a center tab in place of the spaces to center the caption, but if the images are different widths, you're going to need to adjust the center tab position for each image. For that reason, you may want to just continue with the right intent tab for the photo credit. That would give you one less thing to worry about because it always pushes everything after it to the right margin. and you won't need to adjust the right align tab too.

~Barb

Put the caption and the photographer on the same line in the text frame.

Use the Tabs panel and use the Align Center tab for the caption and the Align Right tab for the photographer.

To reuse the layout save the text frame as an Object Style which you can re-apply.