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What is Focal Length?

Questions? Go here: www.youtube.com Simple and wordless explanation on what's a focal length (use common sense!).
Категория: Education
Время: 00:01:38.250
Теги: Nikon Nikkor 14-24 24-70 70-200mm VR Focal Length Zoom Prime Lenses 50mm 85mm 28mm 35mm
 

Focal Length

Категория: People & Blogs
Время: 00:03:57.750
Теги: focallength
 

Focal Length

The focal length of an optical system is a measure of how strongly the system converges (focuses) or diverges (defocuses) light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more strongly, bringing them to a focus in a shorter distance.
Категория: Education
Время: 00:13:30
Теги: photography Focal length ISO canon nikon linco flora lighting studio exposure metering camera digital
 

Lenses (focal length, crop factor, macro lenses) - Photography with Imre - Episode 5

Episode 5 of my photography series discusses topics related to lenses such as focal length, crop factor and macro lenses.You'll also want to check out my blog - binarygraphite.blogspot.com - as it's supplemented with additional information and links to sites describing this topic in detail. Hope you enjoy, remember to rate (5 stars!), and subscribe so you can stay up to date with my future videos.
Категория: Education
Время: 00:05:24.750
Теги: photography photo pictures photos slr dslr camera series episode calgary alberta digital olympus e3 e-3 lesson tutorial tips demo demonstration education casio exf1 ex-f1 lens lenses macro focal length crop factor ant sensor size sensor aps-c aps fourthirds four thirds four-thirds four thirds mm photomicroscopy microscope magnification extension tube extension lens on backwards canon nikon 35mm film 35mm film frame
 

Focal Length Explained

This film explaining focal length is an excerpt from our photography training DVD available form www.photographycourses.biz The focal length of your lens does much more than just zoom in on distant objects - it can completely alter the way an image looks. watch me show you how to understand and use your focal length for better photos. Buy the DVD and learn sooo much more.
Категория: Howto & Style
Время: 00:05:00
Теги: focal length focal lengths focal length lens lenses how to use focal length zoom zoom lens long lens wide lens medium lens changing focal length what is focal length camera lens camera lenses understanding camera lenses explained dslr camera instructional video photography photographic camera cameras Mike Browne photos better photos pictures images tutorial video tips techniques
 

How to Figure Friggin Focal Length and f Stop Thingies.

J Brunner shows how to calculate focal length and f stops.
Категория: Education
Время: 00:07:18.750
Теги: Brunner photography stop focal length lens visual arts
 

Photography Tutorial - Lens Focal Length

An explanation of focal length by Darren Cole. More at www.darrencole.com
Категория: Education
Время: 00:04:11.250
Теги: photography education lens focal length camera canon digital tutorial SLR
 

Depth of Field Explained, Part 3 of 6: Focal Length

From snodart.com, his 6 part video provides a detailed explanation of depth-of-field and the factors that affect it. This tutorial was originally designed for filmmakers who use 35mm depth-of-field adapters. The information applies to still photography and other suited mediums.
Категория: Education
Время: 00:02:31.500
Теги: dof depth of field 35mm aperture f-stop field of view subject to camera distance shallow deep focus
 

Fresnel Lens Focal Length Change with Water, Concentrated Solar Power

This is a raw unedited video in realtime demonstrating the physics of light through a Huger Fresnel Lens. As water is added to the Fresnel side of the lens, the Focal Length triples due to water filling in the grooves of the lens. The optical quality is reduced causing the light to spread over a larger area. The overall energy concentrated is the same (less water filtering). This solar Fresnel Lens with a 40" focal length increased to almost 9 feet or 108"
Категория: Science & Technology
Время: 00:04:12
Теги: SOLAR TRAINING TEACHING STUDENT DEGREE ALTERNATIVE ENERGY FRESNEL LENS GREENPOWERSCIENCE
 

FRESNEL LENS PARABOLIC MIRROR FOCAL POINT FOCAL LENGTH SOLAR POWER ALTERNATIVE ENERGY HID LIGHT

www.greenpowerscience.com This is a video illuminating the focal point.
Категория: Science & Technology
Время: 00:05:52.500
Теги: FRESNEL LENS SCIENCE SUN COLLECTION SOLAR POWER GREENPOWERSCIENCE STEAM ENGINE ALTERNATIVE ENERY BIO FUEL aviation space
 
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