Can anyone tell me what this flower is called

I am a photographer and need to know what type of flower this is I photographed for my records.

Thanks.

http://www.istockphoto.com/file_closeup.php?id=11181287

Thank you :-)

Yes, could be either .   

if you look under the photo it says that it's a group of heleniums 

if you look under the photo it says that it's a group of heleniums 

I thought it was one of those trick questions 

They could be marigolds   

Yes, they could.       

Definately Heleniums.  Flowers on rudbeckia go to more of a point like a daisy, Heleniums have the bumpy edge.

Nice piccy.