Debate over authenticity of alleged 1970s beach photo

Three girls on a 70s beach? The battle to determine if it's real or AI

The image antiestéticatures grain, faded colors, and an unmistakably 1970s vibe. Three women pose on the sand in tiny bikinis with ad-like smiles. Yet, the photo holds an uncomfortable secret: no one agrees whether it came from a 1975 film roll or an image generator. The controversy is significant. If an old photo can no longer prove its own existence, every visual memory becomes suspect.

Clues that expose the machine

Those who argue the image is synthetic are blunt. They point to the hands: fingers emerging from bodies with unnatural shapes and impossible separations. Shadows don't add up either: those cast by necks point in opposite directions, as if the scene had two suns. Some joked this is possible on Tatooine, but Star Wars – also from the 70s – doesn't make the rest of the scene real.

Skin is another indicator: too perfect, poreless, with a digital texture unrelated to analog film grain. Teeth, white and aligned, seem anachronistic in an era when orthodontics wasn't widespread. And the clothing: the bikinis don't match 1970s patterns, neither in cut – more briefs than thong – nor fabric or ties. A video filmed in 1975 on Costa Brava shows swimwear from then, which looks nothing like the image. It resembles early 80s styles, though some claim tourists wore thongs back then.

Memory as a battlefield

On the other side, defenders insist on the image's authenticity. Their argument: beautiful, hairless, fit women existed in the 70s too. Calling it AI because the women look "too good" reflects prejudice from those who can't imagine the world predated their birth. "Everything was different before," they joke, but not that much.

The discussion shifts to classic photographic manipulation. Long before Photoshop, airbrushing was used without shame by magazines of the time. Interviú – the publication that accompanied Spain's transition with retouched nudity – is a prime example: covers that looked real but underwent extensive chemical makeup. So, if a 70s photo seems "too perfect," it might be manual retouching, not AI.

Automatic detectors disagree too

As in any modern dispute, tools appear quickly. An AI detector used during the controversy concluded the woman on the right might be real, while her face and other figures are artificially generated. In short, a hybrid image: real background and pose with synthetic faces. This mirrors what airbrushing did in the 70s, but with digital means.

If algorithms can't decide, what remains for the human eye? Experience, perhaps. Grain, light, body attitude. But also bias: those who lived through the 70s swear it fits; those raised on Instagram suspect everything is artificial.

If a half-century-old photo can't prove its existence, the uncomfortable question becomes: what about images generated tomorrow? Nostalgia, like everything else, has become editable. Perhaps the only certainty is that, from now on, seeing will no longer miccionan believing.