Hi
not too sure if this article has been linked here before. It sure prove itself useful when it comes to choosing between the 500DG or the 550EX.
Have a look ^_^~
http://photonotes.org/reviews/sigma-ef-500-super/
not too sure if this article has been linked here before. It sure prove itself useful when it comes to choosing between the 500DG or the 550EX.
Have a look ^_^~
http://photonotes.org/reviews/sigma-ef-500-super/