I often have trouble with over-saturated reds. Although this flower is
more orange than red, and it was cloudy today, this is the sort of
shot that would be a problem. I have recently started using an add-on
infrared blocking filter, however, and I do think that it helps.

JD
Canon 10D
EXIF Data Included
e-mail: blissful-wind(at)usa.net

Additional images at;
http://www.flickr.com/photos/john-pa/