> I have a sample of the full image and enlarged crop at:
>
> http://www.netspeed.com.au/mark/s50.html
>
> By comparion the third image on that page is simply inspiring for an
> amateur photographer like myself...digital allowed me to bracket
> exposure and shoot away just to get a handful of fantastic prints that
> justified the $3-odd to print at A4.
The image has a strong blue cast dominated by the sky. When the contrast of
the tree was set against the sky the image sensor could not handle the
difference in exposure. What I would be doing is trying out a colour
correction filter and/or a polarising filter. B+W, as much as I think it is
not useful, a UV-B filter might help, as it has a pink cast.
The problem in the image is a limitation of the sensor. If you can reduce
the blue cast you can probably get the tree back into black colours. No
digital camera is perfect out of the box, just as no film is perfect either.
You should seriously consider a correction method in front of the lens.