There may be a slight difference in light-transmission from one lens to another, as a result of variations in design and production. ... Not so fast, my friend. ... The same thing applies if youa#39;re using flash, and have determined the exposure setting by use of the guide number, as provided ... You decide to use a yellow (K2 ) filter on that other lens which you know cuts the light ... Do you want to change your diaphragm opening two positions smaller, to get increased depth-of -field when youranbsp;...
|Title||:||Travel and Camera|