DSLR Lenses
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The document discusses different types of lenses and their uses for creative photography projects. Standard zoom lenses are for everyday portraits and family photos. Ultra-wide zoom lenses allow more area in focus with depth of field and small zoom adjustments. Fisheye lenses have a dramatic curved lens that gives images a hemispherical look, useful for landscapes. Wide-angle lenses expand the angle of view and depth of field in a compact size for portability. Telephoto lenses close in on distant subjects while capturing details. Super telephoto lenses zoom in from even farther for sports and wildlife shots. Macro lenses view subjects with previously unseen detail. Tilt-shift lenses allow selective focus through tilting and correcting converging lines through shifting.
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Lens filters can enhance photographs by modifying light entering the camera lens. They come in various types, including screw-on and drop-in filters. Choosing the right size, type, and filter factor is important to avoid negatively impacting image quality. Common filters include UV filters for protection, polarizing filters for reducing reflections, and color balancing and neutral density filters for exposure control. Filters also have uses in black and white photography to enhance contrast between tones through effects on sky, foliage, and other elements. Proper understanding and application of filters can improve photographic results.
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A camera lens focuses light onto the camera's sensor or film. It determines several important factors like focal length, aperture, depth of field, and image quality. There are different types of lenses including prime lenses with a fixed focal length, zoom lenses that can change focal lengths, and specialty lenses like wide angle, telephoto, and macro lenses that serve different photographic needs. The type of lens used affects how much of a scene is captured and the sharpness and clarity of the final image.
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UV filters protect camera lenses from damage and dirt while also reducing haze. Polarizing filters darken skies, increase saturation, and reduce reflections. They have the biggest impact on water, sky, and color. There are linear and circular polarizing filters. Infrared filters allow infrared photography. ND filters reduce exposure for all wavelengths equally, allowing slower shutter speeds or larger apertures. They are useful for water movement, depth of field, and motion blur. Graduated ND filters transition from neutral density to clear across the frame. Variable ND filters provide multiple densities by rotating polarized layers.
Physics Investagatory Project
This document describes a physics experiment to determine the combined focal length of one convex and one concave lens. The student measures the individual focal lengths of the convex and concave lenses and then combines them, varying their separation. Applying the lens combination formula, the student calculates the combined focal length as 14.516 cm, demonstrating that the effective focal length and power change when lenses are combined.
Lens Power Point Presentation.
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Telescopes use lenses or mirrors to magnify distant objects. There are two main types: refracting and reflecting. Refracting telescopes use lenses and have two main variants - astronomical/Keplerian and Galilean. The astronomical telescope uses a convex objective lens and concave eyepiece to produce an inverted and magnified final image. The Galilean telescope combines a convex objective and concave eyepiece to produce an upright final image without inversion. Reflecting telescopes use curved mirrors instead of lenses.
Types of Lenses used in photography
This slide gives you the basic information about the types of photography lenses used worldwide.
Image source: Google Images
*the content provided here has been copied from various sources. no authentication proof is available.
Telescopes
Telescopes work by using lenses or mirrors to collect and focus light from distant objects. The objective lens or primary mirror gathers light and brings it to a focal point. An eyepiece then magnifies this focused light and spreads it over the retina of the eye. Telescopes have two main properties - aperture, which determines how much light is collected, and magnification, which is determined by the eyepiece. There are two main types of telescopes - refracting telescopes which use lenses, and reflecting telescopes which use mirrors. Electric focusers can precisely focus a telescope automatically.
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A camera lens focuses light onto the camera's sensor or film. It determines several important factors like focal length, aperture, depth of field, and image quality. There are different types of lenses including prime lenses with a fixed focal length, zoom lenses that can change focal lengths, and specialty lenses like wide angle, telephoto, and macro lenses that serve different photographic needs. The type of lens used affects how much of a scene is captured and the sharpness and clarity of the final image.
Various Filters in Digital Photography
UV filters protect camera lenses from damage and dirt while also reducing haze. Polarizing filters darken skies, increase saturation, and reduce reflections. They have the biggest impact on water, sky, and color. There are linear and circular polarizing filters. Infrared filters allow infrared photography. ND filters reduce exposure for all wavelengths equally, allowing slower shutter speeds or larger apertures. They are useful for water movement, depth of field, and motion blur. Graduated ND filters transition from neutral density to clear across the frame. Variable ND filters provide multiple densities by rotating polarized layers.
Physics Investagatory Project
This document describes a physics experiment to determine the combined focal length of one convex and one concave lens. The student measures the individual focal lengths of the convex and concave lenses and then combines them, varying their separation. Applying the lens combination formula, the student calculates the combined focal length as 14.516 cm, demonstrating that the effective focal length and power change when lenses are combined.
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Telescope
Telescopes use lenses or mirrors to magnify distant objects. There are two main types: refracting and reflecting. Refracting telescopes use lenses and have two main variants - astronomical/Keplerian and Galilean. The astronomical telescope uses a convex objective lens and concave eyepiece to produce an inverted and magnified final image. The Galilean telescope combines a convex objective and concave eyepiece to produce an upright final image without inversion. Reflecting telescopes use curved mirrors instead of lenses.
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This slide gives you the basic information about the types of photography lenses used worldwide.
Image source: Google Images
*the content provided here has been copied from various sources. no authentication proof is available.
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Telescopes work by using lenses or mirrors to collect and focus light from distant objects. The objective lens or primary mirror gathers light and brings it to a focal point. An eyepiece then magnifies this focused light and spreads it over the retina of the eye. Telescopes have two main properties - aperture, which determines how much light is collected, and magnification, which is determined by the eyepiece. There are two main types of telescopes - refracting telescopes which use lenses, and reflecting telescopes which use mirrors. Electric focusers can precisely focus a telescope automatically.
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This document discusses different types of camera lenses and shots. It describes fish eye lenses which create a distorted image towards the edges with a 180 degree field of view. Short telephoto lenses are used to isolate features in landscapes and portraits, while long telephoto lenses similarly capture detail but from greater distances, making them useful for wildlife and sports photography. Extreme long shots show the entire subject and surroundings, while long shots focus on the subject. Medium shots contain the upper body, and medium close ups the chest up. Close ups show 20% of the subject or object. Extreme close ups capture 15% like a face or eyes to convey emotion.
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The document summarizes the basic components and use of a telescope. It discusses that a telescope has two main components - an objective lens or mirror that gathers light, and an ocular lens or eyepiece that is used for viewing. It also mentions that telescopes are used to magnify distant objects and make them appear clearer. The document provides additional details on magnification depending on the eyepiece and telescope focal lengths. It describes the use of a finder, which is a smaller attached telescope, to first locate objects before viewing them in the main telescope for a smaller field of view. It gives tips on focusing the telescope and changing eyepieces to achieve different magnifications.
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Filters serve several purposes for camera lenses, including protection from dirt and scratches, cutting through atmospheric haze, saturating colors, eliminating glare, and allowing photographers to blur motion or shoot with wider aperture in bright lighting. The main types of filters are UV filters for protection and reducing haze, polarizing filters for making clouds pop out and saturating colors while eliminating glare, and neutral density filters for blurring motion by dropping shutter speed or shooting with wider aperture in bright conditions. Photographers are advised to check their lens size and specifications to ensure proper filter fitting and to consider Tiffen filters.
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Telescopes
The document provides an overview of how telescopes work, including their history and the key components and principles of refracting and reflecting telescopes. Refracting telescopes use lenses to bend light rays and form an image, while reflecting telescopes use mirrors. Both collect light and use additional lenses or mirrors to magnify the image for viewing. The size of the objective lens or mirror determines how much light is collected, while different eyepieces allow changing the magnification. Filters can enhance viewing of certain objects. Modern telescopes also observe wavelengths beyond visible light.
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The document discusses two main types of telescopes - refracting and reflecting. A refracting telescope uses two lenses, a large objective lens that collects light and forms a real image, and an eyepiece lens that magnifies this image for viewing. A reflecting telescope uses a concave mirror instead of an objective lens, collecting light via reflection rather than refraction. Reflecting telescopes are commonly used for large astronomical telescopes as mirrors can be made larger than lenses.
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The document provides an overview of how telescopes work, including their history and the key components and principles of refracting and reflecting telescopes. Refracting telescopes use lenses to bend light rays, while reflecting telescopes use mirrors. Both collect light to form a bright focal point that eyepieces then magnify to produce enlarged images for viewing. Larger apertures allow telescopes to collect more light and produce brighter images.
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1. Lenses can be convex or concave, with convex lenses converging light and causing magnification.
2. The power of a lens is determined by its focal length, with shorter focal lengths indicating higher powers. Spectacles and magnifiers use convex lenses of varying powers for low vision needs.
3. Telescopes use combinations of convex and concave lenses to provide angular magnification without changing vergence. Galilean telescopes have a positive objective lens and negative eyepiece, producing an erect image, while Keplerian telescopes have two positive lenses and an inverted image.
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This document discusses various lens operations and controls including focal length, f-stops, lens speed, iris, macro lenses and focus, zoom lenses, wide angle lenses, depth of field, angle of view, zoom and zoom ratio, filters, and image stabilization. Focal length determines the distance between the lens and its focus point. F-stops correspond to aperture settings and lens speed refers to maximum aperture diameter. Macro lenses can produce life-size images and zoom lenses allow smooth changes between long and close-up shots. Wide angle lenses exaggerate depth and size while depth of field is the range of focus. Angle of view depends on focal length and sensor size. Zoom and zoom ratio determine the visible scene area. Filters include
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There are literally hundreds of lenses on the market now, what are the different types of lenses, what are they used for? This guide will walk you through - http://xlightphotography.com/types-of-camera-lenses/
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This document provides information about borrowing a telescope from the Columbiana Library, including:
- Basic types of telescopes are refractors and reflectors.
- The telescope can be used to view planets, stars, galaxies, and nebulae with magnification up to 600x.
- Instructions are provided on setting up, using, transporting, and caring for the telescope properly and safely.
- Contact information is given for the Mahoning Valley Astronomical Society and the library if any issues arise during telescope use.
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This slide gives you the basic information about the types of photography lenses used worldwide.
Image source: Google Images
*the content provided here has been copied from various sources. no authentication proof is available.
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A lens works by refracting light as it passes from one medium to another. The most common types of lenses are biconvex and biconcave lenses. Biconvex lenses are converging lenses that form real images, while biconcave lenses are diverging lenses that form virtual images. Different types of lenses include wide-angle lenses, normal lenses, telephoto lenses, macro lenses, and specialty lenses like fisheye lenses. Proper lens selection and care is important to avoid damage from dirt, scratches, shocks, and water.
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The document summarizes the basic components and use of a telescope. It discusses that a telescope has two main components - an objective lens or mirror that gathers light, and an ocular lens or eyepiece that is used for viewing. It also mentions that telescopes are used to magnify distant objects and make them appear clearer. The document provides additional details on magnification depending on the eyepiece and telescope focal lengths. It describes the use of a finder, which is a smaller attached telescope, to first locate objects before viewing them in the main telescope for a smaller field of view. It gives tips on focusing the telescope and changing eyepieces to achieve different magnifications.
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This document discusses aperture and depth of field in photography. It explains that aperture, which is the size of the lens opening, impacts depth of field, with smaller apertures resulting in a larger depth of field and more of the image being in focus, while larger apertures produce shallower depth of field focusing mainly on close objects. Landscape photographers tend to use small apertures to keep more of the scene in focus, while portrait photographers often employ large apertures to focus on subjects and blur backgrounds.
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The document provides an overview of how telescopes work, including their history and the key components and principles of refracting and reflecting telescopes. Refracting telescopes use lenses to bend light rays and form an image, while reflecting telescopes use mirrors. Both collect light and use additional lenses or mirrors to magnify the image for viewing. The size of the objective lens or mirror determines how much light is collected, while different eyepieces allow changing the magnification. Filters can enhance viewing of certain objects. Modern telescopes also observe wavelengths beyond visible light.
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Telescopes use lenses or mirrors to make distant objects appear larger and closer. Refracting telescopes use lenses to bend and focus light, while reflecting telescopes use curved mirrors. Catadioptric telescopes combine mirrors and lenses. Telescopes are used to observe objects that are too far away to see clearly with the naked eye, without needing to physically get closer. The magnification of a telescope depends on the focal lengths of its objective lens and eyepiece. Larger aperture telescopes can capture more light but have limitations like chromatic aberration.
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The document provides an overview of how telescopes work, including their history and the key components and principles of refracting and reflecting telescopes. Refracting telescopes use lenses to bend light rays, while reflecting telescopes use mirrors. Both collect light to form a bright focal point that eyepieces then magnify to produce enlarged images for viewing. Larger apertures allow telescopes to collect more light and produce brighter images.
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1. Lenses can be convex or concave, with convex lenses converging light and causing magnification.
2. The power of a lens is determined by its focal length, with shorter focal lengths indicating higher powers. Spectacles and magnifiers use convex lenses of varying powers for low vision needs.
3. Telescopes use combinations of convex and concave lenses to provide angular magnification without changing vergence. Galilean telescopes have a positive objective lens and negative eyepiece, producing an erect image, while Keplerian telescopes have two positive lenses and an inverted image.
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This document discusses various lens operations and controls including focal length, f-stops, lens speed, iris, macro lenses and focus, zoom lenses, wide angle lenses, depth of field, angle of view, zoom and zoom ratio, filters, and image stabilization. Focal length determines the distance between the lens and its focus point. F-stops correspond to aperture settings and lens speed refers to maximum aperture diameter. Macro lenses can produce life-size images and zoom lenses allow smooth changes between long and close-up shots. Wide angle lenses exaggerate depth and size while depth of field is the range of focus. Angle of view depends on focal length and sensor size. Zoom and zoom ratio determine the visible scene area. Filters include
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Check out a telescope!
This document provides information about borrowing a telescope from the Columbiana Library, including:
- Basic types of telescopes are refractors and reflectors.
- The telescope can be used to view planets, stars, galaxies, and nebulae with magnification up to 600x.
- Instructions are provided on setting up, using, transporting, and caring for the telescope properly and safely.
- Contact information is given for the Mahoning Valley Astronomical Society and the library if any issues arise during telescope use.
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Digital Transformation Frameworks: Driving Digital Excellence
[To download this presentation, visit:
https://www.oeconsulting.com.sg/training-presentations]
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DSLR Lenses
- 1. THE RIGHT LENS FOR YOUR CREATIVE PROJECT
- 2. Standard Zoom Lens These are your standard every day lens. These lenses offer standard zoom and focusing options. They are great for portraits and family shots, as well as on the go photography.
- 3. Ultra-Wide Zoom Lens This lens allows you to bring more area into focus and achieve a greater depth of field. In addition, the zoom range allows for small adjustments in the coverage of your shots.
- 4. Fisheye Lens This is a type of wide- angle lens that is unique due to the dramatic curve in the lens glass which gives the image a hemispherical look. These lenses are useful for landscapes and creative shots .
- 5. Wide-Angle Lens These lenses offer you a unique perspective by expanding your angle of view and depth of field. They tend to be compact so they allow for more portability.
- 6. Telephoto Lens These long-focus lenses are perfect when shooting a subject from a distance. You are able to close-in on a subject and still capture details.
- 7. Super Telephoto Lens Similar to the telephoto lenses except they give you greater focal-lengths so you can shoot form even farther distances. These are great for shooting sports and wildlife.
- 8. Macro Lens These lenses allow you to view your subject in a whole new perspective. You are able to see detail on subjects that you could not see with your eyes alone.
- 9. Tilt-Shift Lens These lenses allow you to tilt the lens for selective focus. This can be a great lens for experimenting and using depth of field creatively. You can also use shift movements to correct converging lines.
- 10. Using a lens creatively…