I’ll start with an image that’s in the video. I just metered the scene without compensating for the strong back light. This is what I got:
Using the scanner adjustment to compensate. I can see them but the background is brighter (don’t care) and they look hazy (do care). This is the result:
I tried the Photoshop merge, the same wizard that let’s you create a panorama. It did not cover itself in glory. Several manual variations later, I came up with this:
I may be able to get something better using layers with a selective erase (I got better results putting the darker layer one top and varying the transparency, which seems counter-intuitive to me) but I’m not sure it won’t look like modern HDR-that-doesn’t-look-real images.