what does ef-s on a lens indicate
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Canon Lens Abbreviations 1 EF-S lenses feature a protective pin that stops these lenses from being mounted on a full-frame EOS camera.  EF-M – a new lens format specifically designed for the Canon EOS M mirrorless camera system with EF-M mount. Just like the EF-S lenses, EF-M are designed for APS-C sensor cameras.
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EOS Rebel T5 18-55 IS II Kit The Canon EOS Rebel T5 SLR camera with the EF-S 18-55mm IS II standard zoom lens is perfect for families, budding photo enthusiasts and first-time SLR users alike.
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- Daphne and husband John Jovanovic welcomed their firstborn daughter, Philo, in February 2014. During Thursday's episode about Mind Blowing Meals, Mario Batali, Carla Hall, Clinton Kelly and Michael Symon each revealed a mind blowing secret about themselves. That's when Daphne shared her baby news.
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Depth of field The area within the depth of field appears sharp, while the areas beyond the depth of field appear blurry. In optics, particularly as it relates to film and photography, depth of field (DOF), also called focus range or effective focus range, is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.
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Depth of field Depth of field. In optics, particularly as it relates to film and photography, depth of field (DOF), also called focus range or effective focus range, is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.
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Understanding Ejection Fraction Understanding Ejection Fraction. Ejection Fraction (EF) is a measurement used by physicians to determine how well your heart is functioning. An EF is a percentage of blood that is pumped out of the heart during each beat. Ejection fraction is a key indicator of heart health. Physicians assess the extent of heart muscle damage by measuring the left ventricular ejection fraction. Common tests to determine EF include an echocardiogram and nuclear stress test.
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Focal length The focal length of a lens determines the magnification at which it images distant objects. It is equal to the distance between the image plane and a pinhole that images distant objects the same size as the lens in question. Front focal length (FFL) or front focal distance (FFD) (S F) is the distance from the front focal point of the system (F) to the vertex of the first optical surface (S 1).
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- Customer Service Representatives (CSR) provide information regarding your order status, shipments or billing. Your Olympus Field Service Engineer (FSE) is certified and licensed to install, repair, and optimize Olympus confocal microscope systems at your facility.
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- Electronic Viewfinders (EVFs) An EVF is basically a very small screen inside a viewfinder, so you can put your eye up to the viewfinder and use it like a traditional camera. On most cameras with EVFs you can switch the view between the viewfinder and the rear LCD screen interchangeably.
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Canon EOS Canon also sold a manual-focus camera, the Canon EF-M, which used the same EF lens mount as the EOS cameras. It came with all the automatic and manual exposure functions but lacked autofocus. It came equipped with a split-screen/microprism focusing screen for precise manual focusing.
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- What it means, is that when you are fully zoomed out, the aperture is one number, while zooming in will increase the f-number to a higher number. For example, the Nikon 18-200mm lens has a variable maximum aperture of f/3.5-f/5.6.
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- The Canon EF-S 18–135mm lens is a standard to short telephoto telezoom for Canon digital single-lens reflex cameras with an EF-S lens mount. Its zoom range places it into the superzoom category, although its range is not as broad as several other lenses, such as Canon's own EF-S 18–200 mm lens. The original version of the lens, the f /3.5–5.6 IS, was introduced in 2009 with a suggested retail price of US$499.99.
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Thin lens What makes lenses thin and light is the combination of lens material and optical design. Lens material of higher refractive index directly results in thinner lenses. Nikon is renowned for being the first brand to launch ultra-high index lenses, with a refractive index of 1.74.
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EF vs AF lens? AF is a generic industry-wide designation for auto focus. EF is Canon's designation for the lens mount on all EOS series cameras---you're 10D. and 20D (as well as a whole slew of 35mm film cameras) have the EF mount. EF-S is a variation of the EF mount---it's specific to newer digital cameras with the. APS-sized sensor.
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- That's correct. EF is Canon's line of auto focus lenses for their auto focus (EOS) cameras. EF-S is Canon's line of lenses that are designed specifically for the 'crop factor' camera bodies as mentioned above. These lenses have a smaller image circle and protrude slighter farther toward the camera.
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- EF-M 18–150mm f/3.5–6.3 IS STM. The EF-M 18–150mm f/3.5–6.3 IS STM is a high zoom ratio lens for EOS M series digital cameras. With an approximately 8.3x zoom range it’s capable of both wide-angle and telephoto images, allowing you to hone in on the ripples of a shimmering lake, or capture the entire view with a single lens.
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Canon Lens Abbreviations There is only one Canon EF lens with Softfocus feature, and it is the EF 135mm f/2.8 with Softfocus. It is possible to turn off the Softfocus by setting appropriate ring on the lens to the value of 0 (off), in which case the lens acts like a normal 135mm f/2.8 would.
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What does the f number mean on a camera lens? - Canon EF 50mm f1.4 is a 50mm prime lens with a maximum aperture of 1.4. - Tamron 90mm f2.8 is a 90mm prime lens with a maximum aperture of 2.8. - Canon 70-200mm f/4 is a lens with a focal length of 70-200mm and a maximum aperture of 4.
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- In other words, don't worry about this lens only going to 135mm instead of 200mm. If 135mm isn't long enough, nothing will be. This new STM lens is an inch shorter and adds a zoom lock and instant manual-focus override to the older 18-135mm EF-S IS lens, however manual focus is electronic.he Canon 18-135mm STM is built with pretty decent amateur construction. The exterior is all plastic (except for the mount), but it's high-quality, tough plastic that seems like it ought to take a pretty decent beating. This lens seems like it ought to last a while.
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Canon EOS flash system A-TTL is an initialism that stands for Advanced-Through The Lens flash metering. As with ordinary TTL flash exposure systems, a sensor inside the camera reads the amount of light being reflected off the film during the exposure. When the sensor determines that the exposure is sufficient, it terminates the flash pulse. A-TTL, first seen on the T90 (which predates the EOS family), is a flash exposure system that adds a brief preflash during exposure metering when the camera is in the programmed exposure (P) mode.
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- Also note the lens is not an AF-S lens. It is a AF lens so it does not have a built in focus motor. Without the built in Focus motor like AF-S lenses the lens will not autofocus on a D3300. This one autofocus will function on the D3300 Nikon AF-S NIKKOR 50mm f/1.8G Lens B&H # NI5018GAF MFR # 2199.
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How To Read Eyeglass Or Contact Lens Prescription OD is an abbreviation for the Latin oculus dexter, meaning right eye. OS is an abbreviation for the Latin oculus sinister, meaning left eye. The first number after the determination of which eye is the sphere. A negative number indicates myopia. A positive number indicates hyperopia. The second number in this prescription is the cylinder (astigmatism), and the third number is the axis of the cylinder component. The axis of the astigmatism does not relate to the amount of cylinder, just the location of the irregularity.
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- Conversely if you place an object (a source of light) at distance f fromthe lens, the light rays after passing through the lens will be parallel to each other. A stronglens is one that deflects light a lot, meaning it has a short focal length.The focal length ofcamera lenses is always given in millimeters.onversely if you place an object (a source of light) at distance f fromthe lens, the light rays after passing through the lens will be parallel to each other. A stronglens is one that deflects light a lot, meaning it has a short focal length.
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Lens (optics) The focal length f is positive for converging lenses, and negative for diverging lenses. The reciprocal of the focal length, 1/f, is the optical power of the lens. If the focal length is in metres, this gives the optical power in dioptres (inverse metres). 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.
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- The optional DSLR camera lens mounts give the entire line of Canon’s EF Lenses versatility, from a fisheye to telephoto and everywhere in between. With filters such as polarizing filters, the photographer is able to enhance picture quality by blocking undesirable reflected light.
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- An EVF is basically a very small screen inside a viewfinder, so you can put your eye up to the viewfinder and use it like a traditional camera. On most cameras with EVFs you can switch the view between the viewfinder and the rear LCD screen interchangeably.