Assertion: lens's length | /r/HasProperty | focal
Facets:
value: long
type: DEGREE
Source sentences:
text: What they are: Typically covering a focal length between 24 mm and 35 mm, Wide Angle lenses are available as primes or zooms and come with either variable or fixed maximum aperture.
text: Lenses have the same focal length when light travels from the back to the front as when light goes from the front to the back.
text: As zoom lenses have a range of focal lengths, they can cover several focal lengths inside the same type.
text: Macro lenses come in multiple focal lengths, but allow you to get up close to the subject for extreme detail
text: A wide-angle lens has a shorter focal length, and includes more of the viewed scene than a normal lens; a telephoto lens has a longer focal length, and images a small portion of the scene, making it seem closer.
text: Ultra wide angle lenses have a focal length shorter than the short side of the film or sensor[citation needed].
text: In 35 mm, an ultra wide-angle lens has a focal length shorter than 24 mm.
text: A wide-angle lens is a lens that has a focal length that is shorter than that of the normal lens.
text: View camera lenses are designed with both focal length and coverage in mind.
text: The EF lenses are grouped below by their focal lengths:
text: The EF lenses are grouped below by their focal lengths:
text: Even if you have two kit lenses that cover that focal length, say an 18-55mm and a 55-200mm, the 50 f1.8 fills the bill for low light photograph that the other two can’t because of their aperture limitations.
text: Even if you have two kit lenses that cover that focal length, say an 18-55mm and a 55-200mm, the 50 f1.8 fills the bill for low light photograph that the other two can’t because of their aperture limitations.
text: There's a simple measurement that tells you how powerful a lens is and it's known as the focal length.
text: If the lens has a focal length range with two numbers (say 24-80 mm)
text: Some lenses, called zoom lenses, have a focal length that varies as internal elements are moved, typically by rotating the barrel or pressing a button which activates an electric motor.
text: If you’ve just bought a new DSLR, the kit lens that comes with your camera is almost certainly a zoom lens; most come with an 18-55mm lens, which means that lens covers every focal length between 18mm and 55mm.
text: Both lenses have their place, but don’t dismiss primes out of hand, just because they only cover one focal length.
text: DIL (digital interchangeable lens) cameras, which are mirrorless interchangeable lens cameras (ILC), also use lenses that are listed by their focal length, rather than an X zoom number.
text: For example, a greater degree of barrel and pincushion distortion is tolerated in lenses that span the focal length range from wide angle to telephoto with a focal ratio of 10× or more than would be acceptable in a fixed focal length lens or a zoom lens with a lower ratio.
text: Zoom refers to the lens being able to change the focal length.
text: Zoom refers to the lens being able to change the focal length.
text: Every lens in your kit will have a focal length listed on the lens.
text: So, instead of making a lens that has a focal length that is longer than the distance it is at, you make a lens that has a focal length that is shorter than the distance it is focused at.
text: So, instead of making a lens that has a focal length that is longer than the distance it is at, you make a lens that has a focal length that is shorter than the distance it is focused at.
text: It might seem that we would be taking a step backwards to use a prime lens or a lens that operates at only one focal length.
text: Lenses are named by their focal length, and you can find this information on the barrel of the lens.
text: What this means is that as the lens is zoomed in towards a longer focal length, the largest aperture size will decrease, allowing less light to enter the camera.
text: A varifocal lens is a camera lens with variable focal length in which focus changes as focal length (and magnification) changes, as compared to parfocal ("true") zoom lens, which remains in focus as the lens zooms (focal length and magnification change).
text: Lenses are usually categorized by their focal length.
text: The lens changes focal length and increase magnification as it is zoomed.
text: While the accepted focal length (or focal length range) of a wide angle lens can be a source of contention among photographers, generally speaking, lenses containing a focal length or focal length range wider than 35mm on a full frame camera can be considered wide angle lenses, while lenses featuring focal lengths wider than 24mm can further be categorized into a subset known as "ultra-wide angle" lenses.
text: While the accepted focal length (or focal length range) of a wide angle lens can be a source of contention among photographers, generally speaking, lenses containing a focal length or focal length range wider than 35mm on a full frame camera can be considered wide angle lenses, while lenses featuring focal lengths wider than 24mm can further be categorized into a subset known as "ultra-wide angle" lenses.
text: While the accepted focal length (or focal length range) of a wide angle lens can be a source of contention among photographers, generally speaking, lenses containing a focal length or focal length range wider than 35mm on a full frame camera can be considered wide angle lenses, while lenses featuring focal lengths wider than 24mm can further be categorized into a subset known as "ultra-wide angle" lenses.
text: This means that a lens that’s got a slightly shorter focal length can make a huge difference.
text: A lens is considered to be a "normal lens", in terms of its angle of view on a camera, when its focal length is approximately equal to the diagonal dimension of the film format or image sensor format.
text: Lenses are not labeled or sold according to their angle of view, but rather by their focal length, usually expressed in millimeters.
text: When a lens is a certain distance (its focal length) away from the film, distant objects, such as faraway mountains, are in focus.
text: Lenses are named by their focal length, and you can find this information on the barrel of the lens.
text: When a lens is talked about it generally is described with its focal length (for example it could e a 50mm lens or a 300mm lens) as well as its maximum aperture (usually it will be a number with an ‘f’ in front of it – for example f/1.8 or f/4 or f/5.6).
text: Lenses are usually categorized by their focal length.
text: The angle of view of a lens depends upon its focal length and the camera's image sensor size; a sensor smaller than 35 mm film format (36×24 mm frame) gives a narrower angle of view for a lens of a given focal length than a camera equipped with a full-frame (35 mm) sensor.
text: In photography, a long-focus lens is a camera lens which has a focal length that is longer than the diagonal measure of the film or sensor that receives its image.
text: Macro lenses typically have focal lengths somewhere between 40-200 mm.
text: A macro lens may be of any focal length, the actual focus length being determined by its practical use, considering magnification, the required ratio, access to the subject, and illumination considerations.
text: A perfect macro lens has an MFD and focal length that together allow you to get a 1:1 “reproduction ratio”.
text: But yet, there are lenses such as a 24mm lens which have a focal length that is shorter than this distance.
text: The 70-200mm lens can change its focal length by rotating the zoom ring.
text: The 70-200mm lens can change its focal length by rotating the zoom ring.
text: In addition, some SLR lenses are manufactured with extremely long focal lengths, allowing a photographer to be a considerable distance away from the subject and yet still expose a sharp, focused image.
text: Normal lens : A focal length that corresponds to the human eye.
text: By convention, in still photography, the normal lens for a particular format has a focal length approximately equal to the length of the diagonal of the image frame or digital photosensor.
text: Therefore the “normal” lens on each of these sensors would be about that focal length —
text: A wide-angle lens has a shorter focal length, and includes more of the viewed scene than a normal lens; a telephoto lens has a longer focal length, and images a small portion of the scene, making it seem closer.
text: Wide angle lenses have short focal lengths, while telephoto lenses have longer corresponding focal lengths.
text: A telephoto lens is any lens that has a long focal length.
text: It has a long focal length, and a narrow angle of view.
text: A prime lens, on the other hand, covers just one focal length.
text: Prime lenses have fixed focal lengths (24mm, 35mm, 50mm, etc.) and often provide superior clarity and image quality (but you pay for it in lack of flexibility).
text: In contrast, prime lenses only have one focal length.
text: They come in all kinds sizes and focal lengths, from fisheye to super-telephoto.
text: For 35 mm film and full frame digital cameras (in which the image area is 36 by 24 millimeters) prime lenses can be categorized by focal length as follows:
text: A prime lens means that it is not a zoom and is only that one focal length, in this case a 100mm macro.
text: Back in the day when professional lenses were invariably fixed focal length, most lenses had just four elements and manufacturers sometimes tried to save money by paring this back to only three.
text: Projector lenses have to be very tolerant of prolonged high temperatures from the projector lamp and frequently have a focal length much longer than the taking lens.
text: Standard lenses have focal lengths between 35 mm and 70 mm.
text: Super telephoto lenses have focal lengths exceeding 300 mm.
text: Zoom lenses always feature two focal lengths in the name which indicate the shortest and longest focal lengths in relation to the 35mm/full-frame sensor.
text: This isn't viable with zoom lenses, because their focal length is variable.
text: Lenses have the same focal length when light travels from the back to the front as when light goes from the front to the back.
text: The EF 50mm lenses are a group of normal prime lenses made by Canon that share the same focal length.
text: One advantage is that they have a wider maximum aperture than a zoom lens covering the same focal length.