Thanks Frank & Anthony.
... cute indeed. No posing here, her father is an organist, her uncle is another organist, her older brother is learning the organ, etc. etc. so she does all that naturally, and better not say "no" to her requests.
Concerning skin tones : we had mostly natural light through clear windows; the incandescent lighting is only for the pedalboard. Otherwise the 50/1.4 SC (multicoated, but last avatar of the 'old' formula before the AI saw the light of day) is indeed very useful for portraits & the like. The bokeh can sometimes be annoying - pic #2 provides such a hint, see the bottom part (pistons in particular)