The ISO number of film, also known as its speed, measures a film's sensitivity to light. The higher the ISO number, the more sensitive it is to light, and therefore is able to produce quality images under low-light conditions. Although digital cameras obviously do not use film, you can still set the ISO higher to amplify its intake of information.
Identification
ISO stands for International Organization for Standardization, though older cameras may use the same film speed number values marked as ASA (American Standards Association). European-made older cameras may be listed under DIN (Deutsches Institut fr Normung) values, which consist of two-digit numbers followed by a degree symbol.
ISO Numbers and Light
As the ISO number increases, the less light it requires to make an image. This means film of ISO 100 requires a lot of light, and is best used outdoors. A film rated ISO 1600 requires much less light, and may be able to produce an acceptable image under low-light conditions or indoors. Film speeds range generally from 50 to 3200, with specialty films that go higher, lower, or at speeds in between standard numbers. The standard numbers include 50, 100, 200, 400, 800, 1600 and 3200.
Relationship to Shutter Speed
A shutter speed of 1/30 of a second or longer is considered slow, since a tripod would need to be used to prevent the image from blurring. A film rated at 1600 would be considered a fast film. Because a fast film requires less light to make an image, it also allows for faster shutter speeds to be used, since they inherently let in less light. For situations where action needs to be frozen, or in low-light situations where a flash is not available, film of a high ISO is the best choice.
Film Grain
To capture light quickly, the light-sensitive chemical of high speed film consists of large visible dots, or grain. Grain can be an advantage or disadvantage, depending on the photographer's style. As film speed increases, so does the graininess of the image.
Contrast and Noise
Films of a higher ISO have more contrast than slower films. Digital cameras set to a high ISO will also create images with more contrast and more noise. Noise is like film grain in that it shows up as large visible dots of many colors. In this case, noise is more apparent in the shadows of the image.
Pushing Film
Pushing film refers to it being purposely underexposed and overdeveloped. Some films are more adaptable to pushing than others, with some having the ability to be pushed to three stops faster or more. The result is a grainier image with more contrast.
The ISO number of film, also known as its speed, measures a film's sensitivity to light. The higher the ISO number, the more sensitive it is to light, and therefore is able to produce quality images under low-light conditions. Although digital cameras obviously do not use film, you can still set the ISO higher to amplify its intake of information.
Identification
ISO stands for International Organization for Standardization, though older cameras may use the same film speed number values marked as ASA (American Standards Association). European-made older cameras may be listed under DIN (Deutsches Institut fr Normung) values, which consist of two-digit numbers followed by a degree symbol.
ISO Numbers and Light
As the ISO number increases, the less light it requires to make an image. This means film of ISO 100 requires a lot of light, and is best used outdoors. A film rated ISO 1600 requires much less light, and may be able to produce an acceptable image under low-light conditions or indoors. Film speeds range generally from 50 to 3200, with specialty films that go higher, lower, or at speeds in between standard numbers. The standard numbers include 50, 100, 200, 400, 800, 1600 and 3200.
Relationship to Shutter Speed
A shutter speed of 1/30 of a second or longer is considered slow, since a tripod would need to be used to prevent the image from blurring. A film rated at 1600 would be considered a fast film. Because a fast film requires less light to make an image, it also allows for faster shutter speeds to be used, since they inherently let in less light. For situations where action needs to be frozen, or in low-light situations where a flash is not available, film of a high ISO is the best choice.
Film Grain
To capture light quickly, the light-sensitive chemical of high speed film consists of large visible dots, or grain. Grain can be an advantage or disadvantage, depending on the photographer's style. As film speed increases, so does the graininess of the image.
Contrast and Noise
Films of a higher ISO have more contrast than slower films. Digital cameras set to a high ISO will also create images with more contrast and more noise. Noise is like film grain in that it shows up as large visible dots of many colors. In this case, noise is more apparent in the shadows of the image.
Pushing Film
Pushing film refers to it being purposely underexposed and overdeveloped. Some films are more adaptable to pushing than others, with some having the ability to be pushed to three stops faster or more.
Enhance your photography skill,The Top Secret Photography Techniques
. The result is a grainier image with more contrast.Speed (1994) Theatrical Trailer - YouTube
www.youtube.com/watch?v=aRmhneo5A48"Get ready for rush hour." Theatrical trailer for 1994's action hit Speed. Starring Keanu Reeves, Sandra Bullock, Dennis Hopper, and Jeff Daniels. Directed ...
Film - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/FilmA film, also called a movie or motion picture, is a series of still images which, when shown on a screen, creates the illusion of moving images. A film is created by ...
Here Is What Happens When You Cast Lindsay Lohan in Your Movie ...
www.nytimes.com/2013/01/13/magazine/here-is-what-happens-when-you...Jan 10, 2013 Paul Schrader, Bret Easton Ellis, Lindsay Lohan and a porn star named James Deen try to make a movie for $250,000 that will save all of their careers. What ...
Need For Speed Starring Aaron Paul Movie Casting Calls for ...
www.castingcallhub.com/need-for-speed-starring-aaron-paul-movieIf you would like to be part of the Need For Speed Starring Aaron Paul Movie Casting Call in 2013 please leave a comment below and let us know why you should be ...
What Is My IP Shows Your IP Address.
www.whatismyip.comWhat Is My IP - IP Address Lookup, Change IP, IP WhoIs Lookup, Internet Speed Test, Trace An Email, Host Name Lookup, User Agent, Server Headers Check, IP
Speed Racer (2008) - IMDb
www.imdb.com/title/tt0811080The story begins with Speed Racer who is a young man with natural racing instincts whose goal is to win The Crucible, a cross-country car racing rally that took the ...
What Internet Speed Do You Really Need :: Unbreak-IT
unbreak-it.com/2012/02/what-speed-do-you-needWhenever you shop around for internet access, you generally run across a plethora of different plans, speeds, bundles, boosters, and extra features.
Speed (1994) - IMDb
www.imdb.com/title/tt0111257Cast/credits plus additional information about the film
Movies Military.com - Military and Veteran Benefits, News and ...
www.military.com Off DutyAssociated Press May 14, 2013. MANILA, Philippines - A film that weaves together stories of the anguish and desperation of American and Filipino soldiers during the ...
What is that? ( ;) 2007 - YouTube
www.youtube.com/watch?v=mNK6h1dfy2oFather and son are sitting on a bench. Suddenly a sparrow lands across them. Cast Father: Nikos Zoiopoulos Son: Panagiotis Bougiouris Directed by ...
0 comments:
Post a Comment