I must learn to remember that the husband is much better at keeping secrets than I am. Also, possibly, practice this patience thingamagig that I hear people talking about.
Long story short: I got my birthday present two days early.
So I went for a short walk and took some pictures. It works! I think it seems to overexpose the pictures somewhat if left to its own devices, but I guess I’ll just have to learn to not leave it to its own devices. Or just test further, I might be imagining things.