To determine the overall zoom ratio of the lens, simply divide the longest focal length by the shortest. So, for example, the Sigma 18-35mm F1. 8 DC HSM and the 8-16mm F3. 5-4.5 are both examples of 2x zoom lenses: 35 divided by 16 equals 1.95, and 16 divided by 8 equals 2.
Best Wildlife Telephoto Lenses: NIKON Cameras
- Nikon AF-S NIKKOR 70-200mm f/4G ED VR Lens.
- Nikon AF-S DX NIKKOR 18-200mm f/3.5-5.6G ED VR II Lens.
- Tamron 16-300mm f/3.5-6.3 Di II VC PZD All-In-One Zoom Lens.
70 mm is a mid-range lens good for all sorts of things from portraits to landscapes. 300 mm is a longer telephoto good for things like sports and wildlife. This means a lens like this is a workhorse capable of all manner of uses.
Well, it means you can read the writing on planes flying overhead. Planes that you can't even see when the lens is set to its widest focal length. The 50x optical zoom alone is the focal length equivalent of 24-1,200mm on a full frame body.
Getting back to the Sony's lens, 18-55 is the actual zoom. The lens has a focal length of 18mm at the wide end and 55mm at the long end. That's all you need to know. You can divide 55 by 18 and say it's a 3X zoom, but that doesn't tell you anything.
In this case, your 300mm lens would have a magnification of 6 (6x). Using this simple formula with the zoom lens, at its longest focal length, 300mm, it does have a magnification factor of 6 (300/50), but at its shortest focal length, 30mm, the magnification factor is 0.6 (30/50), a wide angle view.
Lightweight telephoto zoom
This 4x telephoto zoom lens is ideal for the budget-conscious photographer with an interest in shooting sports, wildlife or portraiture. In common with other telephoto lenses, the EF 75-300mm f/4-5.6 III compresses perspective and allows the photographer to restrict depth of field.A telephoto lens will let you do it. The distances between the landscape, cityscape, and museum feel much greater at 35mm than at 289mm.
A kit lens 18–55 sees wider than a single eye up to its equivalence. The 75–300 gives 1.5–6 times closer vision if you like. The shorter is better for landscapes and capturing what your eye sees. The longer gets closer to the action and subject without using your feet.
Remember that apertures are expressed as ratios or fractions, so f/4 means 1:4 (the aperture is 1/4 of the focal length) and f/5.6 means 1:5.6 (the aperture is 1/5.6 of the focal length).
Because this lens captures a wide area it is used for photographing groups of people and landscapes. Telephoto is used to enlarge pictures or for bringing distant subjects closer. A common telephoto comes with 75–300mm coverage.
I shot wildlife for 5 years with a 70-300mm lens on an APS-C camera which gives you 450mm equivalent focal length. The D5500 with a 70-300mm lens will be fine for most wildlife but, if you want to shoot small birds, expect to have to buy a big, expensive lens at sometime in the future.
Its 40x optical lens means it can capture from an equivalent 24mm wide-angle (wide enough for shots of groups, say, or landscapes), through to a massive 960mm equivalent (long enough to pick out far-away subjects and make them appear close-up within the frame). The best compact cameras 2018.
Nikon Coolpix P900
Nikon pretty much rewrote the rulebook with its 83x optical zoom lens P900, which at the time was the world's longest zoom bridge camera.For a typical APS-C DSLR (most), you reach normal magnification at around 30mm. So you can figure that every doubling of that will yield twice the magnification. 60mm is 2x, 120mm 4x, etc.
Getting the Best out of your Kit Lens
The 18mm is a moderate wide-angle that is great for landscapes, architecture and environmental portraiture. The 55mm end is a short telephoto lens ideal for compressing perspective and taking portraits or closing in on details.Focal length is expressed in mm and a higher number means a bigger zoom, while a lower number mean the lens can be used for wider shots. A number lower than 30-50 mm will take in a bigger view than you naturally see, while higher numbers mean focus will be on a smaller aspect of your view.
In Stock. Although there are
many nicer, sharper, better looking
lenses in the Canon
telephoto domain, this 75-300mm is all you really need if you're not a professional photographer.
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50mm lenses are fast lenses with a fast maximum aperture. The most basic 50mm lenses are typically F1. 8 - a very wide aperture. This means they are great for low-light photography (e.g. low-light portraiture or indoor shooting) as they allow more light into the camera's sensor.
The 70-300IS is the better wildlife lens. It offers slightly better colors, is just about as sharp as the 70-200 F4 L, and is built better than the 55-250 IS. Not to mention it has 50 more mm of reach, which is actually quite important for wildlife.
Telephoto Lenses. A telephoto lens is one designed for photographing distant subjects like wildlife and sports events. They are also used in portrait photography. A telephoto lens is a type of camera lens designed for taking photographs of subjects at moderate to far distances.
If you notice your Canon digital SLR camera lens has the letters USM written on the side, it means the lens has a small motor built into the body. Hence, USM is short for Ultra Sonic Motor. What this means is that your lens will autofocus faster than standard models.
A digital camera that accepts different lenses. Also called a "mirrorless interchangeable-lens camera" (MILC), "hybrid camera" and "compact system camera" (CSC), the body is thinner than a digital SLR (DSLR) because it does not use a mechanical mirror to switch the scene between the optical viewfinder and image sensor.
We recommend starting with the Canon EF 70-200mm f/4L as your telephoto and, if you have an APS-C body, the Canon EF-S 10-18mm f/4.5-5.6 for a wide-angle option. If macro is your thing, start with the Tamron AF 90mm f/2.8 Di SP. Or for a kit lens upgrade for APS-C bodies, go with the Sigma 18-35mm f/1.8 DC HSM.
With a regular DSLR or mirrorless camera kit lens, the lens will offer 3x the magnification when you're fully zoomed in compared to when the lens is zoomed right out. This is easy to work out from the focal range of the lens. An 18-55mm kit lens has 3x the focal length at 55mm as it does at 18mm.
The difference is one-third of the field of view in linear terms. If a 200mm lens has a field of view of 6 x 9 feet at a certain distance, a 300mm lens will have a field of view of 4 x 6 feet, on the same camera at the same distance. I personally don't notice much difference between 200mm and 300mm when shooting.
A zoom lens is a lens which can go from wide angle to telephoto range. Or from low telephoto range to high telephoto range, means from low value of focal length to a high value of focal length. But a telephoto lens is specially made for working in the telephoto range.
How do I convert lens focal length (mm) to x-times optical zoom? For example a 18-55mm lens would have a 3x optical zoom, and a 18-200mm lens would have a 11x optical zoom.
Now, at MWC 2019, it has revealed that the phone will be officially out in the spring. Having a 10x zoom on a camera phone is no mean feat: it means the device will offer a zoom ranging from 15.9mm to 159mm (the equivalent of).
