What are focal lengths?
A lens focal length is the distance (in mm) from the optical center of the lens to the focal point located on the camera s sensor. A change in focal length gives you a zoom effectallowing the camera to move toward or away from a photo subject. What s the benefit of high ISO settings? High ISOs let you take pictures in low-light situations where using a flash is not an option. There s a trade-off, however, as high ISO settings often cause digital noise. What is digital noise? Pictures taken in low-light situations often have random flecks of color spread throughout the image. These flecks indicate digital noise. Can I frame my photo using my D-SLR s LCD? Because of the way in which they are constructed, most D-SLRs rely upon an optical view-finder to frame a shot. However, some D-SLRs now have a live view function that lets you use the LCD for framing. How can I take multiple, sequential images quickly? Burst mode lets you capture a certain number of images at a set fps (frames per seco
