Ever since I saw these images, I could not help myself to
wonder how different they look.... Both rolls are contemporary
Fuji slide material:

  http://www.pbase.com/phototalk_thh/image/34013765

They were shot from virtually the same spot and at the
same time, albeit using a lens with a different range
of focal length, what might contribute maybe to a
different exposure of the scene?

Images on the Velvia contain the entire bay (wide angle
was used,) on the Sensia is only the peninsula on the
opposite side of the bay, and the sun protruding through
the clouds.

I thought that a separately made scan of this sunset
would not be so dramatic like a image of these both
uncut rolls of film lying next to each other and being
shot again together.

Of course we expect Velvia to deliver more saturated
colors, such are the characteristics of this material,
but I have not expected such big difference. The
result look as if Sensia was shot at least one hour
earlier!

Have you also observed such seemingly "impossibly
different" results while using two different films
at the time and on the same spot?

Thomas