If I recall correctly
He deeply regretted not getting that shot of the astronaut with the
Moon in the background. That photo would have resonated through
the decades just as the Gemini 4 EVA images are still used to this day,
as most but not all of the other Gemini EVA images weren't quite up
to snuff - though some of the Gemini 12 ones of Buzz Aldrin were
quite good.