Fast prime lenses offer a number of advantages. They are great tools in many situations – whether you need discretion, low-light performance, portability or aesthetics, there’s a lens for every taste. However, these strong advantages also come with certain issues. When used wide-open (meaning at maximum aperture), many prime lenses render extremely shallow depth of field. In normal lighting conditions modern AF systems are capable of focusing accurately. In low-light environments, our DSLRs start to suffer, which reduces our chances of capturing sharp images. Because of this, missed focus is often mistaken for lack of general lens sharpness by beginner photographers. In this article, I will introduce you to several tips on how to use fast lenses in low-light environments, which hopefully will make you feel a little more confident when using them for your photography needs.
Tips on Shooting in Low-Light Conditions
1) Calibrate Your Lenses
The first step you need to take in order to focus accurately in any light, is to make sure that your lens(es) can focus accurately in general. Front and back-focusing has become a very known issue recently. It has become especially visible with higher resolution sensors – they are most unforgiving if you miss focus even slightly. If you want to know why these issues happen, please read our How Phase Detection Autofocus Works article where we explain everything thoroughly. If you want to identify whether your gear has any of these problems, read our How to Quickly Test Your DSLR for Autofocus Issues article.