I had a looksee at Apollo 11 and 12 in the wake of claims on YouTube that the astronauts couldn't physically have taken "so many photos"; hoax theorists tend to ignore the speedy "click-turn-click-turn" of a panorama, and the number of shots that were taken simply to wind on a few frames at beginning or end of a magazine. These are only the EVA photos, and discount those taken from inside the LM.
Apollo 11 EVA photos;
120 in 151m - 1 every 75 secs, including panoramas of 12+11+13+12+8 = 56 shots, plus 7 frames wound at end of film before changing magazine (making 63)
So, broadly speaking, (120 minus 63 = ) 60 or so individual (non-panorama, non end-of-film) photos over 2h31m, an average of 1 every 1m 15s.
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Apollo 12 EVA photos
4 magazines over 2 EVAs
557 in 7h50m (470m) including panoramas of 15+17+18+15+8+7+19+20+24+30 = 173
So ... generally, 325 individual photos in 470m - average 1 per 1m45s