A zoom lens you can go from one focal length to another such as 70-200mm and a fixed is one focal length such as 50mm
A optical zoom use the lenses to focus in on a subject, pretty much the same way binoculars work. Digital zoom magnifies the subject by enlarging in in the pic thru a digital process, this is not a true type of zoom.
The largest aperture which is the smallest number on the aperture ring/dial generally anything between f1.2 - f5.6 dependant on the lens and zoom. On most consumer digital cameras the more you zoom in the higher the smallest aperture becomes. eg. Lens at 35mm, widest aperture (shallowest depth of field) generally about f2.8 Zoom in and the largest aperture will reduce to about f5.6
Optical zoom cameras are used to take a shot in which a far-away object appears both prominently and clearly. Essentially you need a decent zoom lens to obtain this ability, and a good camera with a widely-adjustable lens offers this feature.
Point-and-shoot digital cameras come with a fixed lens, that often has both an optical zoom and a digital zoom. The fujifilm FinePix S3200 has a 24x optical zoom and 6.2x digital zoom. DSLR cameras such as Canon cameras with an EF mount, like the EOS and Rebel series cameras, can have different lenses attached. These lenses can have focal lengths of 600mm and beyond.
Most lenses are identified by their zoom range and aperture. A Nikon Nikkor 70-200mm VR II f/2.8 is a lens with a 70-200mm zoom range, Vibration Reduction II, and a maximum fixed aperture of 2.8 - in other words, a very expensive fast pro lens. A Nikon Nikkor 70-200mm VR f/4-5.6 offers the same optical range, but nowhere near the optical quality in low light situations because of its variable aperture and consumer grade quality.
A zoom lens can change its focal length, allowing you to zoom in and out on a subject. A telephoto lens has a fixed focal length and provides a magnified view of distant subjects.
A telephoto lens has a fixed focal length, providing a specific level of magnification, while a zoom lens can adjust its focal length to vary the level of magnification.
A telephoto lens is a type of lens that has a long focal length, allowing you to zoom in on distant subjects. A zoom lens, on the other hand, has a variable focal length that allows you to adjust the magnification level, including both wide-angle and telephoto capabilities.
A telephoto lens has a fixed focal length and provides a narrow field of view for capturing distant subjects, while a zoom lens has a variable focal length that allows for adjusting the magnification and field of view.
A zoom lens can change its focal length, allowing you to zoom in and out on a subject. A telephoto lens has a fixed focal length and provides a longer reach for capturing distant subjects. The main difference is in their versatility and magnification capabilities. A zoom lens offers flexibility in framing shots, while a telephoto lens excels in capturing distant subjects with clarity and detail. The impact on image quality depends on factors like lens construction and aperture, but generally, a telephoto lens can produce sharper and more detailed images of faraway subjects compared to a zoom lens.
A telephoto lens has a fixed focal length, providing a narrow field of view for capturing distant subjects. A zoom lens, on the other hand, can adjust its focal length, allowing for a range of perspectives from wide-angle to telephoto. This difference impacts performance as telephoto lenses are better for capturing distant subjects with clarity and detail, while zoom lenses offer versatility in framing shots at various distances.
A telephoto lens has a fixed focal length and provides a narrow field of view, allowing you to capture distant subjects with clarity. A zoom lens, on the other hand, has a variable focal length that can be adjusted to change the magnification and field of view, offering more versatility in framing your shots.
A zoom lens can change its focal length, allowing for variable magnification, while a telephoto lens has a fixed focal length with a longer reach. This impacts photography by giving zoom lenses versatility for different compositions, while telephoto lenses excel at capturing distant subjects with clarity and detail.
The main difference between a lens with 18-135mm focal length and a lens with 18-55mm focal length is the range of zoom they offer. The 18-135mm lens has a longer zoom range, allowing you to zoom in closer to distant subjects compared to the 18-55mm lens. This means the 18-135mm lens is more versatile for capturing a wider range of subjects at different distances.
A zoom lens can change its focal length, allowing you to zoom in and out on a subject. A telephoto lens is a type of zoom lens that has a longer focal length, making it ideal for capturing distant subjects. The main difference is that a telephoto lens has a narrower field of view and can magnify distant objects more effectively. This can impact image quality by providing sharper details and better compression of the background, resulting in clearer and more professional-looking photos.
Instead of stating whether to purchase it or not, I will list the pros and cons of buying a prime lens. The main difference between a prime lens and a zoom lens is that a prime lens can not zoom. However, without the capability to zoom, this encourages the photographer to move around and find alternative shooting points. Another positive aspect of using a prime lens is that it has a lot better image quality, with less fringing.
ofcourse optical zoom..................