It's not the special effects, it's the dialogue (spoilers)

I was under no illusions that this was going to be a special effects extravaganza. Maybe because my expectations were so low, I came away feeling they were not too bad at all. I didn't study them in detail, but on having watched the movie once without freeze frame or rewinding, I thought they were overall fine in most cases. Some of the "pillars of smoke" looked pretty phoney but that was more than compensated by the ship on its side in the river. And the machines were sufficiently real to keep you in the movie.

But the dialogue and the script were simply horrible. From the pointless opening scene of pulchritudinous but non-contributory flesh to the dingy dialogue in the initial scenes it just flat out was BORING. I can suspend belief for the machines, but to just happen to stumble over the brother during the walk into town, and have him squashed but able to make a rambling speech requires suspension of the most fundamental aspect of common sense. The same "needle found immediately in haystack" applies to the DC part as well, although at least that was in a specific location in the city. Someone needed to stick a sock in the priests mouth; the cut scene with him quoting the Bible was actually better than the half dozen scenes of rambling nonsense they left in. And what were the heads without bodies that kept popping up in the collapsed house? Were they hallucinations? Some weird alien effect? Filler?

Unlike the incredible story of HG Wells, we have 'God fails, lone scientist saves world' as the theme here. Weak beyond belief.

That's my two cents anyway. Barely worth the time.