Some of the information at the above link is marginal at best.
Bracketed exposures at 10 or 12 mm are very, very difficult to align
properly even if taken on a sturdy tripod, because even minute
changes in the camera position show up as distortions that do not
overlay properly, particularly towards the edges of the frame. You
should also not underestimate the difficultly of correctly blending
images. My attempts, as well as most posted on the web, have the
tell-tale signs of overlay that show up as halos at the
bright-to-dark transitions. Lots of quality time with a tablet and
manual layer masks in PS usually take care of that problem, but I
don't like spending too much time in front of a computer manipulating
images. A bracketed exposure does nothing to eliminate glare from
shiny surfaces, which a CPL does quite effectively. On the rare
occasions where I have to shoot mid-day, the CPL is firmly affixed to
my lens. I have also bought a full complement of Hitech GNDs in
Cokin P-mount in order to reduce the need for overlays.
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