Ulli writes: "The sketch shows Neil rescuing the one and only EVA Hasselblad magazine (Mag S, PN SEB 33100082 SN 415) used during the EVA.

From the Apollo 11 Lunar Surface Journal (111:31): With the SRC (Sample Return Container or rockbox) up to the porch, Buzz asks Neil to ease the tension in the line so that the rock box will drop down enough to come through the hatch and into grabbing range.

Armstrong: Uh oh! The camera came off. I mean the film pack came off. (Long Pause)

Technical Debrief - "Concerning the LEC (Lunar Equipement Conveyor), I had neglected to lock one of the LEC hooks, which normally wouldn't have caused any trouble. You would expect to proceed normally whether that was locked or not. However, for some unknown reason, when I got the SRC about half way up, the Hasselblad pack just fell off. I can't account for that. I just took the pack on up and attached it, and ensured that it was locked when I put it on the SRC the second time. When it fell onto the surface, it was covered with surface material."

Aldrin: Okay. Just ease it down now. Don't pull so hard on it. All right, let it go. (Pause)

Technical Debrief - "I'm sure there is a lot of inertia with any package like that and, with that low gravity, it tends to swing back and forth; and if there is some tendency to reach an unlocked position, it will."

Armstrong: While you're getting that (rock box out of the way), I've got to get this camera (actually, the film mag, which dropped at the foot of the ladder).

Technical Debrief - "There was no problem (picking up the film magazine) because the ladder was right there. So I just leaned over and down to the ground and picked it up. I had the ladder to hold on to."

Aldrin: Roger. How's it coming, Neil?
Armstrong: Okay. I've got one side hooked up to the second box and I've got the film pack on.

The lens on each of the Apollo 12 lunar surface Hasselblads is a German-made 60mm f/5.6 Zeiss Biogon.

From the Apollo 12 Lunar Surface Journal (133:09):

Bean: Is the front of my lens clean?
Conrad: Relatively speaking. Nothing else is.

Bean, Technical Debrief - "I would like to say something about the camera. We got a lot of dust on ourselves and also on the outside of the camera. We kept looking at the lens to see if there was any dust on it and to see if it was going to degrade the pictures. Neither Pete nor I could see it on each other's camera (lens), although the other parts of our cameras were covered with dust. We'll have to take a look at the pictures that we returned (which look okay). If it does turn out to be a problem, we're going to have to come up with some sort of brush we can use to dust off the lens, because I don't see any other way (to clean them). We were trying our best to keep the equipment clean; but just moving around, trenching, leaning over, and all the other things tend to get dust on the equipment."

Later crews tended to be even more active than Pete and Al and, consequently, fell more often and otherwise covered themselves and the cameras with dust. They carried a small, soft-bristle brush for lens cleaning and regularly put it to use on the Hasselblads and on the Rover TV.

Ulli writes "The motif - dealing with something that happened sometime between 134:01:06 and 134:03:59 GET - is a true nightmare for every Hasselblad and Zeiss fan.

Pete threw Al's Hasselblad camera away (Grrrrrrr).

I have drawn the camera without the magazine - that they removed and put on Pete's camera at 133:32:05 - and the broken camera handle - that was removed at 134:03:54."