The most common complaints we hear from most photographers of any experience level is "my images aren't sharp", and "I can't get my focus to lock". Most want to blame their equipment and, while there are many instances that equipment is to blame, we have found a vast majority are just simple user error. This is often down to a lack of understanding of how an autofocus (AF) system works. This tutorial will give you a better understanding of focus and sharpness, and hopefully help you take photographs that you're very happy with!
One way to improve sharpness in dim light is to increase the camera's sensitivity. This works in places such as theaters and gyms where subjects are too far away for flash to work and where you need a faster shutter speed to eliminate blur. It also is a good way to get pictures without using flash in places such as concerts and museums where flash is prohibited.
Your photos don't always have to be sharp to be effective. In many cases, it's better to have part of the scene sharper than the rest. Your pictures can be sharp or unsharp in different ways. Let's talk about them!