I have hundreds of still B&W photos of many of these same scenes. They were taken by my Father and other members of his combat engineers battalion.
The most obvious difference and I am not sure why, is there are far fewer people in Daddy’s photos.
The film dates to July, was your father there before then?
I was told that the area was under stricter control (they were looking for Hitler’s body from May on to June, as well as those of this government in the bunker complex, etc., and so cordoned this region off until things were “all clear.”) Plus, the Russians had control of the bunker area, if I was told correctly, so there were access issues too.