I'm content to go with my original wording; it looks like it's been deliberately dodged, compared to a lower-contrast version which will be closer to the original. I'm also content to accept an explanation that the effect is not necessarily deliberate.
The image
@Vixen posted was
undoubtedly doctored to make it look better. I explained how it was doctored and how we can know it was doctored. It was cropped and reframed to center Aldrin in the composition. And when we compare it to known scans from known first-generation dupes and camera originals, we can easily see the evidence of image density alteration, either intentional or inadvertent. "Doctored" means intentionally modified, and in some cases we can say it also implies nefarious intent. Here the intent is far from nefarious: People have been tweaking -5903 from Day One for legitimate editorial purposes. The December 1969 issue of
National Geographic (which I own) uses -5903 as its cover photo—reframed and made darker in parts so that the white text shows up better.
Vixen seems to be laboring under at least two false premises. First, she seems to think it's possible to copy or scan a photograph without introducing any elements of infidelity. That's simply not possible. The dupe masters were carefully prepared, to be sure. But you can't take a photo of a photo without losing detail and midtones. Thus if two multi-generation copies of a photo exist, you can't definitively say that one is necessarily more faithful to the original than the other if they should appear to differ. The only way to know for sure is to compare them to copies of known provenance.
Second, she seems to think that because
The Guardian credited the photo to "NASA" and gave its photo ID number, that this means there is one, singular, authoritative source at NASA for Apollo photography.
That is absolutely untrue. The only official source at NASA is the Apollo Image Atlas at the Lunar and Planetary Institute. Frankly, they're garbage. Here's -5903 there:
https://www.lpi.usra.edu/resources/apollo/frame/?AS11-40-5903 . Notice how it's a low-resolution scan with poor contrast and a plethora of DCT compression artifacts. No serious editor would consider that for publication.
The Apollo Lunar Surface Journal used to have a good collection, and they were hosted at NASA for a while. But it was always a private project which has now been moved to its own domain.
This site
https://apolloarchive.com/apollo_gallery.html has medium-resolution scans of the camera originals. They're high enough resolution for editorial purposes, but for image analysis you really need to scan at film-grain resolution or higher: 4000-8000 dpi. I won't link directly to -5903 because I suspect the forum software will try to drag in a huge file. You can click your way to the high-resolution image. Here's the low-res scan of the camera original:
https://apollojournals.org/alsj/a11/AS11-40-5903.jpg .
This is where the majority of us get our good copies of Apollo photos. Yes, it's still appropriate to credit them to NASA, who authored them, and it's still appropriate to identify them by number. But the best, most authoritative sources are third-party sources who did all this with NASA's permission. Eric Jones and Kip Teague did a lot of this work on their own, but through their access to NASA.
Vixen is determined to have us believe that her unknown version from
The Guardian is the one and only true depiction of the relative brightness of the lunar surface because of what she's naively inferred from the photo credit.