Zoom lens

Author: m | 2025-04-24

Zoom Lens. POMEAS optical zoom lens auto-control system is developed to meet the requirements of quick accurate inspection. Linear zoom rail lens; 7.5X 4K Zoom Lens; 6.5X Zoom Lens; 2X Macro Zoom Lens; 14X Zoom Lens; 12.5X Zoom Lens

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Aperture commands from your URSA Broadcast G2 or ATEM switcher. Push Auto/Iris Use this button to momentarily activate auto aperture control while in manual mode. This can be combined with iris controls on your camera or ATEM switcher to great effect. For example, with your camera set to an iris based auto exposure mode and your lens aperture set to manual, you can freely adjust your lens iris by using the aperture ring on the lens barrel, however tapping the push auto/iris button will momentarily activate auto exposure, adjusting your iris for the current lighting conditions. Alternatively, you can set an iris value using the controls on your URSA Broadcast G2s LCD touchscreen. While in manual mode, you are free to adjust lens aperture using the aperture ring on the lens barrel, but tapping the push auto/iris button will return the lens to the preset value on your touchscreen. 12Using Servo Zoom Lenses Zoom On the underside of most B4 handgrips, youll find a zoom switch that can be set to servo or manual. This controls zoom behavior. Servo Set this switch to servo or s to enable servo zoom control. In this mode, the rocker switch on your handgrip can be used to zoom your lens in and out, as well as any other zoom related controls, such as zoom speed and quickzoom. Your lens will also accept zoom commands from URSA Broadcast G2, Blackmagic Zoom Demand and ATEM switchers, so long as it is connected to the camera via the lens connector. In this mode, you typically cant adjust your lenss manual zoom ring. TIP Handgrip zoom rockers are typically linked to zoom speed. Push the rocker down gently to zoom slowly, push down harder to zoom more rapidly. Manual Set this switch to manual or m to disable servo control and adjust zoom using the zoom ring on your lens barrel. In this mode, your lens will not accept zoom commands from the handgrip, URSA Broadcast G2, or ATEM switchers. 13Using Servo Zoom Lenses Focus Some B4 lenses also have focus servo controls. If this control is present on your lens, youll see a focus switch on the underside of the handgrip with two settings, servo and manual. Servo Set this switch to servo or s to enable servo focus control. In this mode, your lens can accept focus commands from URSA Broadcast G2, Blackmagic Focus Demand or an ATEM switcher via the lens connector. Manual Set this switch to manual to use the focus ring on the lens barrel to control focus. B4 lenses tend to autofocus quite slowly, so using manual control is more common. NOTE Analog B4 lenses with servos are also supported although

Zoom Lens Definition - What is Zoom Lens by SLR Lounge

Quick Links What Does Zoom Actually Mean? Zoom, like a lot of camera specs, is a bit more complicated than advertising campaigns would have you believe. Smartphone manufacturers like Samsung are now boasting 10x, 50x, or even 100x zoom. But is this even possible? Let’s look at the differences between optical and digital zoom. What Does Zoom Actually Mean? What is zoom, and what does it mean to have a 5x or 10x? In terms of optical physics, not a lot because there’s no such thing as zoom. Lens magnification (how much a lens magnifies distant objects) is a function of its focal length and the resulting field of view. A lens with a longer focal length (relative to the size of the image sensor) has a smaller field of view. This makes distant objects appear closer than they would through a lens with a shorter focal length. There are enough factors at play that lenses aren’t sold based on how much they magnify objects; rather, they're sold based on their focal length. Zoom, as we use it now, is basically a marketing concept popularized by compact cameras. Originally, it was the ratio between the shortest and longest focal lengths of a lens. So, a 10mm-100mm lens had 10x zoom, while a 25mm-100mm lens had a 4x zoom. This meant a lens with 10x zoom didn't necessarily make things look 10 times bigger. Smartphone manufacturers, however, use zoom slightly differently. A 1x zoom is broadly accepted as the field of view of the main camera. Smartphones like the iPhone 11 Pro add an even wider lens and call it a 0.5x zoom, rather than resetting 1x to the new widest angle. Unlike with compact cameras, this means you can expect mostly the same rough magnification with different 10x-zoom smartphones. If you want to know more, you can check out this piece on how zoom specs are calculated. All you really need to know, though, is zoom depends on the underlying focal length of a lens and the size of the sensor---and that it’s a bit disconnected from reality. But what's the difference between optical and real zoom (I'll keep using this word for the sake of convenience, but what I really mean is "apparent magnification" or "narrower relative field of view")? How Optical Zoom Works Optical zoom is when the physical properties of a lens genuinely magnify distant objects. For example, a telescope is all optical zoom. If you view the moon through one, it looks bigger. There’s no loss in quality---objects just appear closer. The optical zoom comes from lenses with long focal lengths that are at least relative to the camera’s sensor size. A long telephoto lens for

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The camera will only power the zoom servo and support electronic iris control. Many of them are standard definition and may not have the standard 12 pin broadcast connector. If you are going to use an analog B4 lens, its important to make sure it is compatible with your camera first as some have limited feature sets. It is also worth testing them for their image circle coverage as some of them may reveal resolution and light fall off towards the edge of the frame. 14Using Servo Zoom Lenses Ret and VTR On a B4 lens, the vtr button toggles recording and the ret button is for program return. For information on how you can configure the vtr and ret button as function buttons, see the set function button section in setup settings later in this manual. The ret and vtr buttons on a B4 lens Setting the Back Focus on B4 Lenses One of the huge advantages of B4 lenses is that they are designed to be parfocal which means they hold focus all the way through the zoom range. This means you can zoom in, get focus on an object and then when you zoom out it will remain in focus. The back focus ring is typically located at the rear of the lens, close to the mount Back focus is critical in ensuring that your HD or 4K B4 lenses retain focus right through the zoom range. When you first mount a B4 lens on your camera you should check that the back focus is correct. Back focus should also be checked when you swap lenses, and its a good idea to periodically check back focus at the start of major projects. 15Using Servo Zoom Lenses To check the back focus of a B4 lens: 1 Place a focus test chart, or a flat white item with good high contrast detail, approximately seventy feet, or as far away as possible, from the camera. 2 Set the iris on the lens wide open and compensate for exposure by using the built in NDs if you need to. Youll want a shallow depth of field so you can exaggerate any focus issues. 3 Zoom into the chart and set focus. 4 Now zoom out. If you reach maximum wide and the focus remains sharp, then your back focus is correct and you dont need to make any adjustments. However, if you zoomed out and the chart drifted out of focus, the back focus is incorrect. Zoom all the way out and adjust the back focus ring on the rear of the lens close to the mount. The back focus ring typically has a twist knob used to loosen and. Zoom Lens. POMEAS optical zoom lens auto-control system is developed to meet the requirements of quick accurate inspection. Linear zoom rail lens; 7.5X 4K Zoom Lens; 6.5X Zoom Lens; 2X Macro Zoom Lens; 14X Zoom Lens; 12.5X Zoom Lens

What is a Zoom Lens and When to Choose a Zoom

Lenses filters in Categories: Electronics & Appliances > Television / Home Theater > Projectors lenses filters in Products: Om System V335310BW000 Lens - M.ZUIKO DIGITAL 40 mm to 150 mm f/22 f/2.8 Varifocal 72 mm Attachment 0.21x Magnification 3.8x Optical Zoom $1435.48 Om System V335940BW000 Lens - M.ZUIKO DIGITAL 9 mm to 18 mm f/4 f/22 Super Wide Angle Varifocal Designed for Digital Camera 52 mm Attachment 0.20x Magnification 2x Optical Zoom 1.9" Length 2.2" Diameter $685.21 Om System V335290BW000 Lens - M.ZUIKO DIGITAL 45 mm f/16 f/1.2 Fixed 62 mm Attachment 0.10x Magnification $1339.78 Om System V335930BW000 Lens - M.ZUIKO DIGITAL 150 mm to 600 mm f/6.3 f/5 Telephoto Varifocal for Micro Four Thirds Designed for Digital Camera 4x Optical Zoom 10.4" Length 4.3" Diameter Black $2582.78 Om System V335270BW000 Lens - M.ZUIKO DIGITAL 12 mm to 100 mm f/22 f/4 Wide Angle, Landscape/Macro, Aspherical Zoom 72 mm Attachment 0.30x Magnification 8.3x Optical Zoom 4.6" Length 3.1" Diameter $1339.78 Om System V335400BW000 Lens - M.ZUIKO DIGITAL 75 mm to 300 mm f/6.7 f/4.8 Super Telephoto Varifocal Designed for Digital Camera 0.36x Magnification $555.70 Om System V335260BW000 Lens - M.ZUIKO DIGITAL 25 mm f/1.2 f/16 Fixed 62 mm Attachment 0.11x Magnification $1339.78 Om System V335390BW000 Lens - 40 mm to 150 mm f/5.6 f/4 Varifocal 3.8x Optical Zoom Black $203.12 Ubiquiti UVC-AI-Theta-ProLens50 Lens - Fixed Designed for Surveillance Camera 1.4" Diameter $152.35 Om System V335160BW000 Lens - 12 mm to 45 mmf/4 Zoom 3.7x Optical Zoom $685.21

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Targeted at those looking for a 35mm film camera with a wide-angle zoom lens, and who want a simple to operate, point and shoot model. 20 Jun 2002 12:00AM by ePHOTOzine| Film Compacts The new Lite Touch Zoom 70Ws 35mm compact camera is targeted at those looking for a 35mm film camera with a wide-angle zoom lens, and who want a simple to operate, point and shoot model. In addition to the features and performance of its predecessor, the Lite Touch Zoom 70W features a lens barrel that matches the colour of the camera body, and a built-in flash that pops up automatically when the camera is turned on, and retracts when the camera is turned off. The Lite Touch Zoom 70Ws has a compact body housing a 2.5x zoom lens, letting users easily frame images within a 28-70mm range. The lens features a multilayer coating which minimizes reflection, for superior colour balance and reproduction. There's also a built-in sliding lens cover for protection. The intelligent built-in flash pops up, ready to fire, as soon as the camera is turned on. It features a number of versatile flash functions which include Auto Flash, Flash Cancel, Anytime Flash and Night Portrait (Slow Sync Flash), in addition to Red-Eye Reduction, offering the flexibility to cover a variety of shooting situations. Its fully automatic operation simplifies use. The flash retracts automatically when the camera is switched off.Nikon Lite Touch Zoom 70Ws Major Features- 35mm 2.5x zoom lens with sliding lens cover - 2.5x 28-70mm zoom lens takes pictures from wide-angle to telephoto - Flash modes - choose from Auto Flash, Flash Cancel, Anytime Flash and Night Portrait (Slow Sync Flash) - Red-Eye Reduction helps eliminate the reddish appearance that can occur when shooting in low-light conditions - User-friendly automatic film operation - Self-timer mode lets the photographer be part of the picture Support this site by purchasing Plus Membership, or shopping with one of our affiliates:Amazon UK,Amazon US,Amazon CA,ebay UK,MPB. It doesn't cost you anything extra when you use these links, but it does support the site, helping keep ePHOTOzine free to use, thank you. View Directory Page : Nikon Other articles you might find interesting... ADVERTISEMENT

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For Effective ZoomingUse Zoom Sparingly: While zoom can enhance your shots, it’s best to use it judiciously. Excessive zooming can lead to blurry footage and image degradation.Experiment with Different Zoom Levels: Don’t be afraid to play around with different zoom levels to see what works best for your subject and composition.Stabilize Your Camera: When using zoom, it’s crucial to stabilize your camera to avoid shaky footage. Use a tripod, a gimbal, or even your body to minimize camera shake.Focus on the Subject: Ensure your subject remains in focus when using zoom. Use the camera’s autofocus feature or manually adjust focus for optimal clarity.The Power of Lens Mods for ZoomGoPro Hero 11 lens mods offer a superior zoom experience compared to digital zoom. These physical attachments change the camera’s field of view, providing a more natural and quality-preserving zoom.SuperView Lens ModThe SuperView Lens Mod expands the field of view, capturing a wider perspective. This is ideal for immersive shots that capture more of the surroundings. While not a traditional zoom, it effectively widens the shot, making it appear as if you’ve zoomed out.Max Lens ModThe Max Lens Mod offers a wider field of view than the SuperView Lens Mod, perfect for capturing expansive landscapes and dynamic action scenes. It’s a great option for capturing a sense of scale and immersion.Mastering the Art of Zooming for Cinematic ShotsZooming can add dramatic flair to your videos, creating a sense of movement and intrigue. Here are some techniques to elevate your cinematic game:Slow Zooms: Slowly zooming in or out over time creates a sense of suspense and draws the viewer’s attention to the subject.Zoom-Ins: Quickly zooming in on a subject can add excitement and emphasize a specific moment or detail.Zoom-Outs: Zooming out can reveal a wider context, providing a sense of scale and perspective.Beyond the Basics: Advanced Zoom TechniquesFor those seeking to push their creative boundaries, here are some advanced zooming techniques:Dolly Zoom: This technique involves simultaneously zooming in while physically moving the camera backward. This creates a unique effect where the subject appears to stay the same size while the background shrinks or vice versa.Rack Focus: This technique involves changing the focus point while zooming. This can create a sense of depth and draw the viewer’s attention to different elements within the frame.Final Thoughts: Embracing the Zoom PotentialZooming is a powerful tool that can transform your GoPro Hero 11 footage. By understanding the

What is a Zoom Lens? - Imaginated

Tighten. Simply loosen the twist knob and rotate the ring until your chart is in focus. 5 Now zoom in and out slowly and check if your chart remains in focus all the way through the zoom. 6 Repeat steps 4 and 5, zooming in and out and making adjustments to the back focus ring. If your lens holds focus all the way through the zoom range your back focus is now set correctly. Setting back focus on Fuji LA16x8 BRM lenses The process of setting back focus on a Fuji LA16x8 BRM lens is slightly different. Instead of an external back focus ring this lens sets back focus electronically using a button underneath the hand grip. To set back focus on a Fuji LA16x8 BRM lens: 1 Place a focus test chart, or a flat white item with good high contrast detail, approximately seventy feet, or as far away as possible, from the camera. 2 Set the zoom switch underneath the lens handgrip to servo. 3 Locate the F.f. button next to the zoom switch. Press and hold the F.f. button for 5 seconds. The indicator LED on top of the zoom rocker will flash red. 4 The lens will automatically zoom in. Set focus using the focus ring. Its important to note that if you have Blackmagic Focus Demand attached you will need to unplug it from your camera to adjust the physical focus ring or adjust the focus using the focus demand for this step and step 5. 5 Press the F.f. button again and the lens will automatically zoom out. Set focus using the focus ring. 6 Press the F.f. button to confirm the settings. The top indicator LED will flash red. The electronic back focus on your Fuji LA16x8 BRM lens is now set. 7 Now zoom in and out slowly and check if your chart remains in focus all the way through the zoom. 8 If your lens holds focus all the way through the zoom range your back focus is now set correctly. If you need to make further adjustments, repeat steps 3 to 6. TIP As temperature changes and wear over time can have subtle effects on the back focus, its worth regularly checking the back focus on B4 lenses to ensure it stays accurate. 16Using Servo Zoom Lenses Using Box Lenses Large studio box lenses like Fujinons UA27x6.5 and UA125x8 and Canons UHD Digisuper series lenses can also be used with URSA Broadcast G2s B4 mount. These types of box lenses allow horizontal and vertical image stabilization on studio style 27x lenses, as well as extreme zoom ranges with 80x and even 125x magnification which are incredible for broadcasting sports and. Zoom Lens. POMEAS optical zoom lens auto-control system is developed to meet the requirements of quick accurate inspection. Linear zoom rail lens; 7.5X 4K Zoom Lens; 6.5X Zoom Lens; 2X Macro Zoom Lens; 14X Zoom Lens; 12.5X Zoom Lens A zoom lens with a range of mm is a 2x zoom lens. This is the same zoom ratio as a mm lens, even though the lenses cover a different range of focal lengths. A mm lens has a zoom ratio of 4x, and a mm zoom lens has a large, 10x zoom ratio.

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Outdoor events. The large size of box lenses means that you will need to setup your camera correctly on a heavy duty tripod or pedestal, with adequate spacing. This is possible with URSA Mini Shoulder Kit, a VCT-14 plate and a box lens adapter. Box lenses have a high power draw, and need to be powered separately. You can add additional power to the lens by using an URSA 12 volt power supply, or if you are using Blackmagic Camera Fiber Converter, you can run additional power from the 12 volt D-tap output on the side of the unit. Plug the lens connector from the lens support bracket into URSA Broadcast G2. Add additional power to your box lens by plugging in a 4 pin XLR cable Once additional power is connected, you can power up your camera and control the lens with your URSA Broadcast G2. 17Using Servo Zoom Lenses PL Servo Zoom Lenses PL zoom lenses used for motion pictures can also be used with your URSA Broadcast G2. When using servo driven PL or EF lenses, the full 6K sensor area of URSA Broadcast G2 can be used to get the most out of these lenses. For more information on setting the sensor area on your URSA Broadcast G2, refer to the record settings section later in this manual. Super 35mm PL lenses with full servo control of focus, iris and zoom include: Brand Series Model Range Max. Aperture Fujinon Cabrio ZK2.5x14-SAF 14-35mm T2.9 Fujinon Cabrio ZK4.7x19-SAFB 19-90mm T2.9 Fujinon Cabrio ZK12x25 with ESM-15A-SA 25-300mm T3.5-3.85 Fujinon Cabrio ZK3.5x85-SAF 85-300mm T2.9-T4 Fujinon Cabrio XK6x20 20-120mm T3.5 Canon Cine-servo CN7x17KAS S 17-120mm T2.9-3.9 Canon Cine-servo CN10x25 IAS S/P1 25-250mm T2.95-3.95 Canon Cine-servo CN20x50 50-1000mm T5-8.9 Focus and zoom controls can also be used to drive focus and zoom from the pan handles in a studio environment on all of the servo zoom lenses listed above. Hybrid Compact Servo Zoom Lenses Recently, a new category of lenses known as compact-servo zoom lenses have been introduced. These have some of the functionality of B4 and PL servo zoom lenses but use an EF mount. The zoom rocker for these lenses can be powered through the lens mount from URSA Broadcast G2 and information such as lens name, iris, focus and zoom position values are all able to be read and recorded by URSA Broadcast G2s lens metadata system. Electronic control of the focus, iris and zoom is available with these lenses. When connected to a switcher, these can also be controlled remotely via ATEM Software Control. If you are operating in a live broadcast or studio environment, use of these lenses with Blackmagic Zoom and Focus Demands is possible provided

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A shallow depth of field. And always be sure to check that your camera body will be compatible with the lens you choose. Prime lenses. If you plan to shoot in a low-light atmosphere, you may find that a fixed or prime lens is the best option. Fixed lenses are better for wide-aperture photos than a zoom lens because they have a greater maximum aperture. “Prime lenses are made to do one focal length, and because of that they can manufacture the glass in the middle so that it lets in more light,” says Kriesel. “This means in a darker environment, you can get those shots you can’t get with another lens.” Zoom lenses. “Zoom lenses have a rotating barrel on the lens that shifts between a range of focal lengths,” says Kriesel. “From 15mm to 35mm is a pretty common range for a wide-angle zoom lens. The most common standard zoom range is 24mm to 70mm. That allows you to get portraits and event photos. And then 70mm to 200mm would be a telephoto zoom lens. It’s all about flexibility.” Camera sensors and lenses. All digital cameras have a camera sensor, which translates the light into an image. Before you choose a lens, check to see if your camera body has a full sensor or a crop sensor. Certain cameras have crop sensors, like the APS-C sensor, which slightly magnify the image. This means your field of view with every lens you attach will be slightly smaller than it would be with a full-frame sensor. “People might buy an APS-C camera and then get a lens that correctly mounts on it, but they don’t realize it’s doing something to the focal length,” says Kriesel. “It’s going to be a tighter frame around your subject and feel more zoomed in.” Quality matters. Once you know what type of lens you want, don’t be afraid to invest in the highest quality one you can afford. For the most part, a higher quality lens will result in higher image quality. High-quality modern lenses can reduce irregularities in your photos, such as chromatic aberrations caused by high-contrast scenes. And they will be less likely to break. “Buy it nice or buy it twice,” advises Kriesel. Diaz agrees. “Buy the best and fastest lens that you can afford,” he says. A fast shutter speed will give you the ability to “freeze time” on fast-moving subjects or shoot well in the daylight without overexposing your images. Working with your new lens. There’s a lot you can do to perfect your images in editing programs like Adobe Photoshop Lightroom, but starting with the correct lens and camera settings for your project is important. Play around with the settings on your camera body as well as the settings on your lens. Both elements have manual and auto operation modes. “If I put my camera body in manual, that means all the settings, aperture, shutter speed, and ISO are all going to be set by me, the photographer,”. Zoom Lens. POMEAS optical zoom lens auto-control system is developed to meet the requirements of quick accurate inspection. Linear zoom rail lens; 7.5X 4K Zoom Lens; 6.5X Zoom Lens; 2X Macro Zoom Lens; 14X Zoom Lens; 12.5X Zoom Lens

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Have to live with a heftier camera if you find the extra reach to be imperative. How much zoom power do you need? It depends on what you like to photograph, and how close you can get to it. The image above is an uncropped shot of a red-bellied woodpecker in a tree, captured from a distance of about 100 feet, at the camera's maximum zoom setting. Canon doesn't include any sort of weather protection with the SX70 HS, so I'd caution against using it in precipitation. It came through fine on a day photographing in fog heavy enough to wet my beard, but if working under rainy or snowy skies is something you like to do, think about a bridge model with some level of dust and splash protection. Our favorites include the Sony RX10 family, which doesn't offer as much zoom power, but delivers image quality that's closer to an interchangeable lens model thanks to an image sensor that's about four times the size as the one inside the SX70. If you're a novice you can leave the camera in Auto and snap away, but there are also enough controls available to keep shutterbugs happy. In addition to the main zoom control—located around the shutter button, angled atop the handgrip, just where you'd expect it—there's a second zoom rocker on the left side of the lens barrel. It moves the lens out more slowly than the main control, ideal for precise adjustments or slow zooms when recording video. The zoom rocker is joined by two buttons. The top one is an assist to help you find your subject when zoomed in—it backs the lens out a bit, but shows your original, tighter zoom position as a virtual box. Once you've got your subject in front of your lens,