If you’re looking for an upgrade to your ‘budget’ telephoto but can’t stretch to a fully professional lens, there are some smart mid-range options to be had. We test 8 top optics to find out which is the best telephoto lens for your money.
Sigma has introduced a new Mount Conversion Service that will allow photographers to swap their lenses over to a new camera system should they decide to switch brands – whether you shoot with DSLR or a CSC.
Does your lens has more letters after its name than a retired rocket scientist. What do all these lens markings mean? You can refer to a lens simply by the name of the manufacturer, the focal length, and its maximum aperture – a Sigma 70-300mm f/4-5.6, say, or Canon 50mm f/1.4. But as lenses have often evolved from decades of development, they usually have a line of additional letters after their names, stamped on the barrel or printed on the boxes.
Some lens markings are about manufacturer branding – defining a more recent range, or a lens that’s built to higher standards than another. Others are to do with the optics themselves, and to highlight specific technologies used in the lens construction. In the jargon-busting guide below, we’ll translate these lens markings for you.