Check out these nature image images:
Mushroom
Image by ıusnɾ@w|©kedf|lm
Olympus OM-2n | OMZ 50/3.5 macro
Mount Jerai
Canon S3 IS Sample Image II [by canon]
Image by saschaaa
An image taken by a Canon S3 IS. It's only a sample image, but looks really nice.
This image is ©by canon.
Nature Wheel
Image by fs999
Pentax K-5 • 80 ISO • Pentax DA* 50-135mm F2.8 SDM
Hoya Pro1 Digital Filter Close-Up N°3