I understand You mate, we'll come out with an english version in some time ... but in the meen time, some of my other ones: www.hardcore.freeride.pl/Wac-Vidal
First of all its smaller not lower. A lower aperature has a bigger size. Second of all, you have clearly never pursued photography in an artistic sense becuase otherwise you would know that selective focus using is one of the most visually bold and appealing effects, paticularly when used on an image with a great physical distance between foreground and background. So, I would suggest that a clear amateur like youself avoids giving advice to those serious about photography. Everybody else neg prop me as much as you like for overeacting but I'm sorry. I just get sick of this kinda speak before you think stuff.