Film is light sensitive because of the silver halide crystals in its emulsion. The number and size of these crystals determines light sensitivity: how quickly the film will absorb light. The level of light sensitivity is called the film's speed or ISO. Slow film has many very small crystals. Fast film has larger less numerous crystals.
Slow Speed Film
Slow speed film ranges from ISO 6 to 200. The fine grain of slow film can capture small details and create the sharpest images. However, because low ISO film is less light sensitive, it requires longer shutter speeds and wider apertures. Low ISO film tends to blur with even very slight motions, so it should always be used with a tripod. Slow film is best used in brightly lit outdoor situations but can be used indoors with a slow shutter speed and a wide aperture.
Medium Speed Film
Medium speed film ranges from ISO 200 to 400. Medium speed film is the middle ground between crispness and light sensitivity. It's better at stopping motion than slow film, but it's grainier. It's better at capturing detail than fast film but is more prone to motion blur. Medium speed film requires a tripod in low light situations but may not need one in bright light situations. A medium ISO can stop motion if it is accompanied by a flash.
Fast Speed Film
Fast film is any ISO more than 400. As of October 2009, the highest speed available is ISO 102,400 on the Canon EOS-1D Mark IV. Fast film can stop motion to create a clear action shot and is sensitive enough to capture a well lit image in a poorly lit environment. However, the larger silver halide crystals make pictures look grainy, and small details are lost. A fast ISO can be used in bright light if a narrow aperture and fast shutter speed are used.
Digital Film Speeds
On digital cameras, the ISO has become a camera setting, like aperture and shutter speed, that can be changed for each picture. Since digital cameras don't use film, they don't have real ISOs. The ISO rating on a digital camera represents a light sensitivity measurement equivalent to film with the same rating. The latest digital cameras are capable of ISOs that far outstrip conventional film speeds. At first, these super fast ISOs were accompanied by something called digital noise, which caused random bands and specks of color to appear in places they didn't belong. Some camera companies are working on noise reduction technology that would eliminate this problem.
Film is light sensitive because of the silver halide crystals in its emulsion. The number and size of these crystals determines light sensitivity: how quickly the film will absorb light. The level of light sensitivity is called the film's speed or ISO. Slow film has many very small crystals. Fast film has larger less numerous crystals.
Slow Speed Film
Slow speed film ranges from ISO 6 to 200. The fine grain of slow film can capture small details and create the sharpest images. However, because low ISO film is less light sensitive, it requires longer shutter speeds and wider apertures. Low ISO film tends to blur with even very slight motions, so it should always be used with a tripod. Slow film is best used in brightly lit outdoor situations but can be used indoors with a slow shutter speed and a wide aperture.
Medium Speed Film
Medium speed film ranges from ISO 200 to 400. Medium speed film is the middle ground between crispness and light sensitivity. It's better at stopping motion than slow film, but it's grainier. It's better at capturing detail than fast film but is more prone to motion blur. Medium speed film requires a tripod in low light situations but may not need one in bright light situations. A medium ISO can stop motion if it is accompanied by a flash.
Fast Speed Film
Fast film is any ISO more than 400. As of October 2009, the highest speed available is ISO 102,400 on the Canon EOS-1D Mark IV. Fast film can stop motion to create a clear action shot and is sensitive enough to capture a well lit image in a poorly lit environment. However, the larger silver halide crystals make pictures look grainy, and small details are lost. A fast ISO can be used in bright light if a narrow aperture and fast shutter speed are used.
Digital Film Speeds
On digital cameras, the ISO has become a camera setting, like aperture and shutter speed, that can be changed for each picture. Since digital cameras don't use film, they don't have real ISOs. The ISO rating on a digital camera represents a light sensitivity measurement equivalent to film with the same rating. The latest digital cameras are capable of ISOs that far outstrip conventional film speeds. At first, these super fast ISOs were accompanied by something called digital noise, which caused random bands and specks of color to appear in places they didn't belong. Some camera companies are working on noise reduction technology that would eliminate this problem.
Programs On SPEED - The Motor Sports Authority
www.speedtv.com/scheduleProgram schedule for Speed. View by date, program, category or keyword search.
funalso : Fun Also - Enjoy Rocking Time With Us!!
groups.yahoo.com/group/funalsoWelcome to FunAlso, The main objective for making this group is to provide Fun in your life , and keep you updated about the world. We are very sure that you will ...
DIRTYLAUNDRY - YouTube
www.youtube.com/watch?v=bWpK0wsnitcQuestion: What's the difference between justice and punishment? DIRTYLAUNDRY Follow the Dialogue: https://twitter.com/thomasjane https://twitter.com ...
The JESUS Film Project Home
www.jesusfilm.orgAims to show the "Jesus" film to everyone in the world in his or her own language. Provides audio or video for dial-up or broadband preview.
V for Vendetta (film) - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/V_for_Vendetta_(film)V for Vendetta is a 2005 action thriller film directed by James McTeigue and written by The Wachowski Brothers, based on the 1982 comic book of the same name by Alan ...
Blog - The Film Experience
thefilmexperience.netEmbed this on your own page. Countdown with The Film Experience!
The Difference between the United Kingdom, Great Britain and ...
www.youtube.com/watch?v=rNu8XDBSn10The United Kingdom vs Great Britain, England and much more. *T-Shirts for sale!* Help support more videos: http://goo.gl/1Wlnd Grey's blog: http://www ...
The Princess Bride (1987) - Quotes - IMDb
www.imdb.com/title/tt0093779/quotesThe Princess Bride (1987) Quotes on IMDb: Memorable quotes and exchanges from movies, TV series and more...
Voltage - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/VoltageVoltage, electrical potential difference, or an electric tension (denoted V and measured in units of electric potential: volts, or joules per coulomb) is the ...
Islam: Making a True Difference in the World - One Body at a Time
thereligionofpeace.comTheReligionofPeace.com is a non-partisan, pluralistic site that documents Islamic terror and explains the darker side of Islam.
Social mobility in America: Repairing the rungs on the ladder ...
www.economist.com/news/leaders/21571417-how-prevent-virtuous...MERITOCRACY tends to be spoken of approvingly these days. Its ascendancy is seen as a measure of progress. In the dark ages, the dumb scions of the aristocracy ...
Blade Runner (1982) - FAQ
www.imdb.com/title/tt0083658/faq-FAQ Contents. A Note Regarding Spoilers; How much sex, violence, and profanity are in this movie? Is 'Blade Runner' based on a book? What are the differences between ...
HTML5 - Differences from HTML4
www.w3.org/TR/html5-diffDifferences from HTML4 W3C Working Draft 28 May 2013 This Version: http://www.w3.org/TR/2013/WD-html5-diff-20130528/ Latest Version:
0 comments:
Post a Comment