Download Table of Contents Print this page
Canon 10 x 30 IS Manual

Canon 10 x 30 IS Manual

Technology guide


15X50 IS
12X36 IS
18X50 IS
10X30 IS


Table of Contents

Summary of Contents for Canon 10 x 30 IS

  • Page 1 15X50 IS ALL WEATHER 18X50 IS ALL WEATHER 10X30 IS 12X36 IS...
  • Page 2 Doublet field-flattener: Makes the images sharp throughout the field of view. This consists of two lenses. Erecting prisms: Corrects the inverted image. Vari-Angle Prism: System which stabilizes the image, using Canon’ s unique optical technology. Objective lens: Pulls in the image of a distant object.
  • Page 3 Eye Spacing/Diopter Adustment/ Rubber Eyepieces 1) Look through the binoculars with both eyes, and adjust them for the spacing of your own eyes (with the IS series, use the eyepiece barrels). The instrument is correctly adjusted Remembering the readings of the diopters will be convenient once both views merge into one circle.
  • Page 4 The first binoculars were invented about 400 years ago. There are now several hundred different models of binoculars manufactured and sold throughout the world. Although the concept of seeing a magnified image with your own eyes has not changed, there are two distinctly different types of binoculars: prism binoculars and Galileo binoculars.
  • Page 5 Prism Binoculars/Galileo Binoculars/ Porro Prisms/Roof Prisms Basically binoculars are made up of the objective lenses for long focal points, and the eyepiece lens, for short focal points. The light from each to the two objective lenses which forms the image of an object (Fig 4-a), passes through the barrel and hits the eyepiece lens, which enlarges the image (Fig 4-b).
  • Page 6 Magnification refers to the ratio of the size as seen with the naked eye and size obtained with the binoculars. For example, if a pair of binoculars has 10x magnification, an object will be enlarged 10 times. In other words, something 100 meters away will look 10 meters away through the binoculars.
  • Page 7 (in the IS series), which greatly controls hand shake. It is because of these technologies that with Canon’ s binoculars, each feather on a bird’ s wing comes in crisp and clear. A sharper image–right down to Because of lens aberration, the the bird’...
  • Page 8 The optical structure of each model of binoculars is different, so even if the magnification rating is the same, how much view the pair of binoculars can pull in will differ. The width of the view you can see through the binoculars is called the field of view.
  • Page 9 Field of View/Real Field of View/Apparent Field of View/Field of View at 1.000 meters Wide field of view Narrow field of view Field of view and image circle Film for 35-mm cameras has a set standard format (24 x 36 mm), and if the focal distance is the same, generally the angle of the lens will not change.
  • Page 10 Brightness varies from one model of binoculars to another. Brightness varies with the price and size of the binoculars. There are many degrees of brightness according to one’ s needs. 1) Exit pupil The bright circle visible when the eyepiece lens array is viewed about 10 inches away from the eyes is called the exit pupil.
  • Page 11 Canon uses a “super spectra” coating, which has been highly praised for its efficacy with Canon’ s EF lenses. Canon also coats the prisms as well to ensure Left: lens not coated. Right: lens coated. The lens bright and clear images.
  • Page 12 The ideal binoculars are ones that make you forget you are looking through binoculars. If you purchase a pair with a wide field of view, and the image quality is superior (enough that there isn’t much difference from looking with the naked eye), you will have many enjoyable hours of use.
  • Page 13 a: Comatic aberration The image around the light source is blurred. b: Chromatic aberration The highlight part looks pink. c: Discoloration There is a yellow tint on the image.
  • Page 14 If the curvature of the field is large, the edges will be blurred. It is not recommended to purchase such binoculars. To greatly decrease the curvature of the field, Canon uses a field-flattener lens and an aspherical lens. With Canon binoculars, you will have beautiful image quality all round.
  • Page 15 Chromatic Aberration/Curvature of the Field/Distortion d: Contrast The colors are not vivid and look dull. e: Curvature of the field The image around the light source is blurred. f: Distortion The building is slanted, and has a spool-shaped effect.
  • Page 16 7x or 8x magnification. Canon is the world’ s first maker to use an active optical image stabilizer for IS series. Because two Vari-Angle Prisms are controlled by a microprocessor, hand shake is eliminated (Fig.
  • Page 17 Image Stabilizer/Vari-Angle Prism With image stabilizer Without image stabilizer With the image stabilizer on, you are guaranteed stable images even from a moving vehicle.
  • Page 18 Canon’ s exclusive optical design with two field-flattener lenses, lenses which are normally reserved for high-grade binoculars. By using two lenses, Canon has achieved a wide field of view of 67˚ (12x36 IS, 15x50 IS ALL WEATHER, 18x50 IS ALL WEATHER), with unrivaled sharpness.
  • Page 19 Doublet Field-Flattener Lens/ Field- Flattener Lens/Closest Focusing Distance Lightweight and water resistant: Excellent for outdoor use. The bird that you were following from afar suddenly came close to you. One problem you encounter is the closest focusing distance. In general, the more magnification the binoculars have, the longer the focusing distance.
  • Page 20 Two sensors detect horizontal and vertical shaking respectively. The two Vari-Angle Prisms in both the left and right telescopes are controlled by a microprocessor to instantly adjust refraction angle of the incoming light. This system is used in Canon’ s IS Binoculars. Advantages: •...
  • Page 21 Apparent Field of View Available Aperture of Objective Lens Chromatic Aberration Closest Focusing Distance Curvature of the Field Diopter Adjustment Distortion Doublet Field-Flattener Lens Exit Pupil Eye Spacing Field-Flattener Lens Field of View Field of View at 1.000 meters Galileo Binoculars Image Stabilizer Magnification Porro Prisms...
  • Page 22 View beautiful scenery or architecture, or museums with the compact 10x25A or 8x22A – they will come in handy Travel on vacations. With the 10x30 IS, you’ll be able to see the details of the pencil strokes of sketches or texture of paintings.
  • Page 23 •Waterproof models are waterproof 1 meter underwater for 5 minutes. These models are not for use under water. All Canon Binoculars are composed only of environment friendly lead- free optical glass. This special lens design was engineered as part of the...
  • Page 24 Tel. +43 1 680880 Tel. +30 1 9242710 Fax +43 1 68088308 Fax +30 1 9242714 English Edition ZC1-0300ENG © Canon Europe N.V. 05/2000. Printed in Belgium This paper is made of 50% TCF pulps and 50% recycled and de-inked fibres...

Table of Contents