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Product Description
Specification
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Specifications:
- Image Size(CCD type): 1/3"
- Focal Length: 5-100mm
- Mount: CS
- Minimum Object Distance: 0.2 m
- Maximum Aperture Ratio: F1.8
- Field of View(°): 50.1-2.8°
- Dimension: 100 x 40mm/3.9 x 1.6in(L x H)
Features:
- Varifocal lens, manual focus
- Optical glass lens
- The manual lens is used for standard CS mount CCTV cameras
- The zoom lens gives you a wide field of view image available with a CS mount lens
- Manually adjustable focal length (zoom) from wide to tele and a manual focus
- Compact and light weight
Details:
- This is a Iris CS mount zoom lens for CCTV camera of 5-100mm focal length
- This CS mount lens is designed with 5-100mm focal length
- This 5-100mm CCTV camera manual Iris CS mount zoom lens is with image format of 1/3 inch
- The zoom lens allows for capturing those wide-angle situations as well as zooming in for long-distance subjects and close-ups
- Compact and light weight, this zoom lens can be taken wherever you want
What Is a Varifocal Lens?
In Animal Vision- The lenses in humans' and other animals' eyes flex to shift sharp focus between distances. Bi- and trifocal corrective lenses are properly multifocal, rather than varifocal, meaning the viewer, rather than the lens, does the shifting. Early in 2010, however, the U.S. Food and Drug Administration approved the first "accommodating" lens for implantation after cataract surgery, flexed by eye muscles like a natural varifocal lens
In Photography
- The optical zoom lens on almost every digital camera is varifocal, though it's actually a system of lenses that changes the distance between its components. The long zoom lens that snaps onto an SLR (single-lens reflex) camera, digital or not, is the classic form
In Surveillance Cameras
- Variable focus in a single lens came to security cameras in the 21st century, but is usually set manually: When you set up your surveillance system, you can choose where in its field of view you want each camera to focus. The camera doesn't zoom in on suspicious activity, and you can't refocus recorded video to read a license plate
How to Zoom the Lens When Taking a Photograph?
- One of the most important camera fundamentals is learning how to zoom the lens. Although this skill is intuitive for many, you will never be able to take good photos without mastering your camera's zoom feature. Learn more about zooming to get the most out of your camera and to ensure that you never miss a good photo opportunity
- Turn the camera on. Remove the lens cap so you will be ready to take a photo after zooming the lens. Point the camera toward the subject
- Turn the lens zoom ring to adjust the focal length on SLR and digital SLR cameras. Most lenses zoom in by turning the ring to the right. Turn it to the left to zoom out. Some lenses, however, work in the opposite way. Look through the view finder to determine the effects of turning the zoom ring on your particular lens
- Press the right or left zoom button or turn the zoom dial if you are using a point-and-shoot camera. These models do not have interchangeable lenses. The zoom controls on these cameras are usually located near the upper right-hand corner of the device
- Press the right zoom button to increase the zoom. It generally has a "+" label. Use the "-" button on the left to zoom out. If your camera has a zoom dial, move it to the right to zoom in and turn it left to zoom out
- Zoom the lens appropriately. Consider what effect zooming in will have on the photo. For landscape shots, it is generally not a good idea to zoom in very far. When shooting a portrait, however, you should zoom in close to the subject. Sometimes you just need to zoom a little to remove an extraneous object from the shot
- Many photographers are cautious about zooming too far because although computer software can crop out unwanted parts of a photo, it is impossible to recover scenery that was never part of the picture to begin with
Tips & Warnings
- Make sure nothing is blocking the lens when zooming. Forcing the lens to zoom in the presence of an obstruction could damage the camera
Package Included:
- 1 x 5-100mm Varifocal Zoom CCTV Camera Manual Iris Lens
Customers' Reviews
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Devin
from ()
Bought this item on
11-16-2011- Other Thoughts: I was a little hesitant to purchase, but once I mounted, it hasn't come off. Great manual Lens for the cost.
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Seth
from ()
Bought this item on
07-20-2011- Other Thoughts: This is a nice CS mount lens of 5-100mm focal length that came with the camera. I really enjoy being able to get close ups on the action shots in the sporting events that I attend.
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Isaac
from ()
Bought this item on
06-12-2011- Other Thoughts: I will recommend this zoom lens to anyone, great service overall. sent on time, nothing broken or scratched. i am very happy with service.
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Kelsey
from ()
Bought this item on
12-22-2011- Other Thoughts: I am very impressed with this zoom lens. It is wonderfully sharp. Don't let this stop you at all. I would by it all over again for sure.
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Trevor
from ()
Bought this item on
08-18-2011- Other Thoughts: i saw it on website and it had really good reviews and was pretty cheap so i got it. after taking it out and using out doors i can say this is one really good lens. its built very solid and looks really nice.
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