A few nice digital photos images I found:
Pink
Image by fs999
Pentax K-7 • Pentax DA* 200mm f:2.8 ED SDM
Hoya Pro1 Digital Filter Close-Up N°3
One for All
Image by fs999
Pentax K-5 • 200 ISO • Pentax DA* 200mm f:2.8 ED SDM
Hoya Pro1 Digital Filter Close-Up N°3
Yellow Drops
Image by fs999
Pentax K-5 • 80 ISO • Pentax DA* 50-135mm F2.8 SDM
Hoya Pro1 Digital Filter Close-Up N°3