Cameras and Tests. The three webcams I compared were the embedded webcam on my HP EliteBook 8760w; the Logitech HD Webcam C615, an external unit you can buy for under $40; and the Logitech Broadcaster, an external unit that costs around $200 (Figure 1, below).
Special cake flour with a high starch-to-gluten ratio is made from fine-textured, soft, low-protein wheat. It is strongly bleached, and compared to all-purpose flour, cake flour tends to result in cakes with a lighter, less dense texture.
Bread flour, with its high protein content, isn't suitable for cupcakes. Recipes that specifically call for cake flour have a proven formula and should be respected. To substitute all-purpose flour, use 3/4 cup of all-purpose flour plus 2 tablespoons of cornstarch for every cup of cake flour. Substituting whole wheat flour in cupcakes results in a denser cake and should replace no more than half of the white flour in your recipe.