Fixed Focal Length: Lenses with fixed optics are generally of higher quality than a corresponding zoom lens at the same focal distance. They are also known as "fixed" or "prime" lenses.
Fixed Aperture Zoom: Lenses with a constant aperture value (constant brightness) as zoom increases.
Variable Aperture Zoom: Lenses whose minimum aperture changes (decreasing brightness) as the zoom increases.
Ultra Wide Angle: With a focal distance of up to 24mm and a focus primarily on landscape and architectural photography.
Wide Angle: With a focal distance of 24mm to 35mm, there is a slight distortion and elements appear longer than they actually are.
Standard: With a focal distance of 40mm to 60mm approaching the angle of human eye view, they are the most common and useful for general photography.
Small Telephoto Lens: Focal lengths ranging from 70mm to 100mm are a popular choice for portraits, as they compress perspective and achieve subject isolation from the background.
Telephoto: With a focal distance of 100mm to 300mm, they are ideal for photographing a distant object due to the high magnification they provide.
Hyper-Telephoto: With a focal distance greater than 300mm, the highest magnification of objects is achieved and they are mainly used in wildlife photography or wherever large distances are necessary.
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