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.
Pastry flour is similar to cake flour but has a slightly higher gluten content. This aids the elasticity needed to hold together the buttery layers in flaky doughs such as croissants, puff pastry, and pie crusts. Self-rising flour is all-purpose flour that has had baking powder and salt added to it. Use it in yeast bread recipes in place of all-purpose flour by omitting salt, and in quick bread recipes by omitting salt and baking powder.