Que enteneu en el seguent texte:
El seguent article fa referencia DX40 en comparacio D40 que tenen en mateix sensor però mes megapixels.
ISO 100 - 3,200. Per the laws of physics, a 10MP sensor has to run at lower ISOs for the same performance as a 6MP sensor of the same physical size. Therefore the D40x' ISO range starts at ISO 100, not ISO 200 as the D40. The "wider range of ISOs" touted as a feature is actually a downgrade: the D40 didn't need to go slower than ISO 200 for great results, and at ISO 100 the D40x is more likely to have more blur or shallower depth of field.
Entenc que aquest es el problema que comentava que les fotos no queden del tot enfocades a ISO100. Per tant jo per si de cas a partir d'ara no torno a trevallar a ISO 100.
El windows tambe desenfoca les fotos. Utilitzeu el FastStone, no tinc cap tipus de comisio
http://www.kenrockwell.com/nikon/d40x.htm