Light, Lens, & Zoom Digital Photography Apollo Technology Education.

Slides:



Advertisements
Similar presentations
Camera PartsCamera Parts  3 main parts of a camera  lens  film (or sensors)  body.
Advertisements

Light Chapter 19.
Light Waves Unlike sound, light does NOT need a medium to propagate or move through. Light travels the fastest through vacuum space – whereas sound does.
1 L 30 Light and Optics - 2 Measurements of the speed of light (c) Index of refraction v medium = c/n –the bending of light – refraction –total internal.
Chapter 17 Optics 17.1 Reflection and Refraction
© 2010 Pearson Education, Inc. Conceptual Physics 11 th Edition Chapter 28: REFLECTION & REFRACTION Reflection Principle of Least Time Law of Reflection.
What is Light?. Light Look around you. What do you see? You might say books, pencils, desks, chairs. But what you really see is light bouncing off books,
Dr. Andrew Tomasch 2405 Randall Lab
Photography. View Camera 8 x 10 4 x 5 Camera is usually referred to by the size of film.
Optics 2: REFRACTION & LENSES. REFRACTION Refraction: is the bending of waves because of the change of speed of a wave when it passes from one medium.
Telescopes What is the purpose of a telescope? What is the purpose of a telescope? To gather electromagnetic radiation in the form of visible light. It.
Light and Waves Conceptual Physics Mr. Holmes. In modern physics, light or electromagnetic radiation may be viewed in one of two complementary ways: as.
Light 1. What thing reflects the most light?. A Mirror.
Waves – from GCSE What you need to know before you move into AS waves.
DIGITAL CAMERAS Prof Oakes. Overview Camera history Digital Cameras/Digital Images Image Capture Image Display Frame Rate Progressive and Interlaced scans.
Units to cover 25, Types of Spectra Kirchoff ’ s Laws: –If the source emits light that is continuous, and all colors are present, we say that this.
Sound and LightSection 4 Section 4: Refractions, Lenses, and Prisms Preview Key Ideas Bellringer Refraction of Light Lenses Dispersion and Prisms.
Light and Its Uses.
Telescopes What is the purpose of a telescope? What is the purpose of a telescope? To gather electromagnetic radiation in the form of visible light. It.
L 32 Light and Optics [2] Measurements of the speed of light 
It’s amazing!…Can you imagine life without it?
Light , Arsenie. Light travels almost unimaginably fast and far. Light carries energy and information. Light travels in straight lines. Light bounces.
Electromagnetic Radiation Spectrum
BASICS of the Camera A brief look at the origins and key features of the modern camera.
Mav Mark What are forms of the electromagnetic spectrum?
Chapter 19 Light, Mirrors, and Lenses Section 1 Properties of Light Pages
Light. Light is a form of energy. Lots of floating energy made up of electricity and magnetism. This energy makes up the Electromagnetic Spectrum.
Light Vocabulary 6 th Grade Science. Optics The study of visible light and the ways in which visible light interacts with the eye to produce vision.
6.2 Extending Human Vision
Section 3: Reflection and Color
Telescopes What is the purpose of a telescope?
Refraction and Lenses.
Chapter 33 Lenses and Optical Instruments
L 30 Light and Optics - 2 Measurements of the speed of light (c)
Light How do we see?.
Table of Contents 9.3 Refraction and Lenses
Introduction to Electromagnetic waves, Light, and color
Light and Color Review Game.
Light and Color Vocabulary
The lecture Geometric optics By Mukhamedgaliyeva M.A.
Colors of Light Light Unit.
The Aperture acts like an iris
Optics Optics is the study of how light behaves.
Light A form of energy that stimulates the eye and makes it possible to see things.
Electromagnetic Spectrum
TELESCOPES What is the purpose of a telescope?
Colors of Light Light Unit.
Light Vocabulary 6th Grade Science.
Light Vocabulary 6th Grade Science.
Light Vocabulary 6th Grade Science.
L 32 Light and Optics [2] Measurements of the speed of light 
Chapter Menu Lesson 1: What is light? Lesson 2: Light and Matter
Telescopes and the Electromagnetic Spectrum Section 3
Light Behavior Lab Day Essential Questions:
WHAT IS LIGHT? Part 2 Light is a form of energy!
L 30 Light and Optics - 2 Measurements of the speed of light (c)
Unit 7 Light and Vision.
L 32 Light and Optics [2] Measurements of the speed of light 
Light.
Jeopardy This is Science - Light JEOPARDY!!!
Telescopes What is the purpose of a telescope?
Mirrors and Lenses.
Refraction Optical Phenomena.
LIGHT.
LIGHT how it works.
Light Vocabulary 6th Grade Science.
Lesson 2: Colour of Objects
Refraction Optical Phenomena.
Light Vocabulary 6th Grade Science.
Telescopes.
Presentation transcript:

Light, Lens, & Zoom Digital Photography Apollo Technology Education

Visible Light Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow. Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light.

Prisms: Seperating the Colors When white light shines through a prism, the white light is broken apart into the colors of the visible light spectrum. Water vapor in the atmosphere can also break apart wavelengths creating a rainbow. Light changes speed when it enters a different medium (air – glass – water vapor, etc.); the result is a refraction of light. Prism: breaks white light into the colors of the visible light spectrum

Check out that Reflection…. The Sun is a natural source for visible light waves and our eyes see the reflection of this sunlight off the objects around us. The color of an object that we see is the color of light reflected. All other colors are absorbed. The human eye and the camera process light in very similar fashion. We see reflections of subjects.

The Human Eye

Camera Definition: a device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for digital cameras)

The Camera

Lens Definition: a ground piece of glass used to gather and focus light. Can be singular or a series of lenses. Focal Length: The distance from the point where light enters a lens and where an image is focused. Note: focal length measured in mm (millimeters)

Optical Zoom Definition: A series of lenses that changes the focal length to magnify the image. “Good Zoom” If possible, move the camera in closer…. “Redneck zoom” Observe how the projection plane at the left receives light on the opposite side it entered the lens. Image is “flipped”. Light is focused on the projection plane (digital light-sensitive chip or film located here) to form image.

Lens Cutaway

Lens Cutaway Note: point out multitude of lenses, location aperture, and sensor/chip

Digital Zoom Definition: The camera takes pixels from the center of the image sensor and stretches them or “interpolates” them to make an enlarged image. “Bad Zoom” Avoid it! Turn it off! “Bad Zoom” Similar to zooming in on a computer screen Pixelation OK for basic documentation work, but not recommended for quality images

Optical vs. Digital Zoom

Don’t be Fooled!