Voici l'avis du responsable des ventes de chez Vertex :

"-so regret to hear that you are so disappoint by our products .
maybe next time you should buy those in the progessional shop. but maybe you won't buy them next time! that I should say our products are value in that price. right?
Helen Dun
Sales Manager
Pixel"


Source : Big Trubble with pixel grip: Accessories Talk Forum: Digital Photography Review


Pour résumer, pourquoi s'étonner d'acheter de la camelote quand on achète un produit à ce prix ?????