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Measuring distances has been an important part of engineering throughout history. While ancient builders used basic guides, craftsmen quickly began creating better measurement tools. From paces and hands to rulers and yardsticks, measurement tools have advanced over hundreds of years. A modern-day rangefinder, one of the most accurate... more »
The vast majority of cameras that use film take 35mm film. 35mm film was developed as a smaller format than other film sizes, and became the most popular film size for amateur photographers. Today, used 35mm cameras are available at very low prices. Several major camera manufacturers continue to make cameras that use 35mm film. more »
The 35mm camera used to be the standard around the world. Whether it was a single-lens reflex (SLR) or rangefinder, the 35mm camera was used by everyone from tourists to pros to capture everything from family picnics to news to fashion. Digital came along and many people switched, but there is nothing like using a 35mm film camera. more »
A rangefinder is a device that helps measure distances for construction workers, photographers and outdoor enthusiasts. There are dozens of rangefinders available on the market today, from simple add-ons to your camera to elaborate ultrasonic devices. You should shop for a rangefinder that balances your long-term needs with a... more »
Photographers and architects have used rangefinders with manual focus knobs for decades due to a lack of options. Camera companies and other rangefinder producers have opened the door for digital devices that allow for more accurate measurements. In order to gain the benefits of a digital rangefinder, you need to learn to use the... more »
One of the latest developments in rangefinder technology is the use of ultrasound as a medium of measurement. Ultrasound waves are emitted by the... more »
Hunters of all ages and experience levels have turned to rangefinders to help find their prey. Rangefinders can be attached to a rifle to target... more »
The use of lasers in everyday life have improved the accuracy and speed of work in various fields. Photographers and architects have taken... more »
A rangefinder is a device that measures distance from the observer to a target, for the purposes of surveying, determining focus in photography, or accurately aiming a weapon. Some devices use active methods to measure (such as sonar, laser, or radar); others, available since the nineteenth century, measure distance using trigonometry (stadiametric rangefinders and parallax, or coincidence rangefinders). They usually use a set of known distances or target sizes to make the measurement.
Rangefinders may be used by military or law enforcement snipers as a means of calculating the distance to the target to set up a perfect shot. The rangefinder is not always the best option though, as it sends out a light source that may give away the snipers position.
See also
* Stadimeter
* Laser rangefinder
* Rangefinder camera
* Macrometer
External links
*
* "Rangefinder Comparison - A National Forest Service document"
* "Light Pulse Generator for rangefinder testing"
Category:Firearm sights
bg:Далекомер
ca:Telèmetre
cs:Dálkoměr
es:Telémetro
it:Telemetro
ja:レンジファインダー
no:Avstandsmåler
pl:Dalmierz
pt:Telêmetro
ro:Telemetru read more at » http://en.wikipedia.org/wiki/Rangefinder
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