ASA
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ASA, an acronym for American Standards Association, refers to an antiquated scale for film speeds devised by Kodak during the 1940s. Film speed measures the degree to which film is sensitive to light.
American Standards Association (ASA)
A scale of measurement which is no longer used.
Techniques Glossary American Standards Association (ASA)
Responsible for supplying the speed rating of photographic film. Doubling the ASA number indicates twice the light sensitivity. ASA was replaced with ISO in the 1980s.
Related Terms ...
ASA Speed: Light sensitivity of film expressed in mathematical values. Equivalent to ISO (International Standards Organization) film speed ranges. The higher the number, the more sensitive the film is to light.
ASA see EI/ASA
Aspect Ratio, Frame Proportions
The proportions of an Image; width divided by height. Example: 1:1.33 for 16mm.
ASA (American Standards Association)
An old film speed rating system. Now superseded by ISO.
(see ISO) ...
ASA Stands for (obsolete) American Standards Association. The initials were once used for a film speed rating system. Now replaced by ISO.
ASA - Measure of film speed.
Aspect Ratio - The ratio of length to width. Most common image ratio is 4:3, although one may run into 3:2 quite often also.
ASA Measure of a film's "light gathering" capability. Replaced by ISO for film and digital. Aspect Ratio The width of an image divided by its height.
ASA - The now defunct film speed rating system of the USA Standards Institute, which was formerly called the American Standards Association - hence the acronym "ASA". The ASA system has been replaced by the more universal ISO system.
ASA
American Standards Association. Group that determining numerical ratings of speed for US made photosensitive products. eg films.
ASA rating
the American Standards Association (US) scale by which the relative sensitivity of photographic films is identified, largely replaced by DIN and ISO rating scales.
ASA
An abbreviation of the American Standards Association, ASA is the term used for film-speed -or light-sensitivity - ratings, which are expressed in numerical terms. The higher the number, the more sensitive and faster the film is.
ISO (ASA) speed - A measure of a film's sensitivity to light. A 400 speed film is more sensitive to light than a 100 speed film. Consequently, the faster film is better suited for low-light photography.
Rewind/ASA Dial
This, at least on cameras without a built-in winder, is a kind of multi-function knob.
ASA
Speed rating for photographic materials devised by the American Standards Association. The system has now been replaced by the ISO system.
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ASA:
Original system of rating photographic materials, which was devised by the American standards Association. The ISO rating system is now used in place of the ASA.
Aspect ratio: ...
GOST/ASA/DIN conversion
scale on a Leningrad meter
photo by AWCam
GOST (Russian Ð"ОСТ) is an abbreviation of "GOsudarstvennyi STandard", which is Russian for "Government Standard".
The 1961 ASA standard PH2.12-1961 American Standard General-Purpose Photographic Exposure Meters (Photoelectric Type) specifies that "The symbol for relative apertures shall be f/ or f : followed by the effective f-number.
Or ASA. (International Standards Organization). The speed or light sensitivity of a captured image is rated by ISO numbers such as 100, 400, 800 etc. The higher the number, the more sensitive to light it is.
Agfa Vista 200 ASA. Impressive film. Nearly rivals that of fuji REALA. However we've only seen 200 or 400 asa versions. We've had some impressive results with Agfa vista. Vista does have some good improvements over HDC adn HDC+.
This camera has no ASA setting, and that makes it a bit diffcult but not impossible. The big lens on this camera makes that with a little creativity you can make nice shots.
Film Speed/ISO/ASA
ISO stands for International Standards Organization and numbers such as ISO 100 or ISO 400 etc. Film was always manufactured to be at a certain ASA. Digital cameras give you the ability adjust your sensitivyt to light or ISO.
ASA) setting, if offered. A low speed or ISO number (50 - 200) is usually provides the best results for portraits, bright light and direct sunlight photography; ...
Top of Page ASA
American Standards Association; (see ISO).
Top of Page B (Bulb)
At the B setting, the shutter remains open as long as the shutter release button remains fully depressed.
Top of Page Bracketing ...
Since the author had beautiful award winning photos, I wanted to know further about his methods concerning explaining relationships of aperture, shutter speed and film/ digital speed (ISO/ASA) which he considered the cornerstone of making (his ) ...
The most common film speed in use today is 100 ASA. It has only moderate grain and is a useful speed for most people in bright daylight.
It is denoted by an ISO number (previously known as ASA and DIN, ISO stands for International Standards Organization). High sensitivity films are called "fast" and low sensitivity films are called "slow.
A film's sensitivity is known as its ' speed' and is expressed as an ASA/ISO number. The higher the number the more sensitive it is and consequently the less light it needs to form an image.
With a film camera, use a fast film; 400 or 800 ASA will work well inside many homes when 100 ASA would require a flash. If you are using a digital camera, read the manual. The more advanced digitals will let you set the ISO equivalent speed.
The fastest film I had with me was 100 ASA, which even at 4 m only gave me exposures of 1/60th at f2.8 through the filter.
Next, you need to decide on film speed known as ISO or ASA. Faster films are more sensitive to light and let you photograph in dim light by giving faster shutter speeds with slower lenses especially zooms, ...
The last B&W IR film is Ilford SFX which is an ASA 200 film. The film is marketed as an extended red film, not a true IR film. The film is sensitive to only a slightly extended IR range.
Formerly called ASA rating, digital cameras continue to use the same system introduced a long time ago. It is common to use the term "stop" in photography. One stop in terms of ISO refers to a doubling of our sensitivity.
Film Speed / Sensitivity Typically this is 100 ISO / ASA for day to day use, rising to 1600 ISO or higher for low-light conditions such as fireworks shows and rock concerns.
The ISO setting of a camera sensor (or rating of a piece of film - sometimes also referred to as ASA) is a measure of how sensitive that sensor is to light. On most digital cameras, this setting can be changed.
Fuji film continued to appeal to serious enthusiasts and professionals with the introduction of a fast film (400 ASA, or ISO) during 1976, and even faster film (1600 ASA, or ISO) during 1984.
Another important term is ISO/ASA. It indicates how sensitive the sensor is to light or how sensitive the film is to light. The more sensitive, the more light can be captured at a given time.
What does ISO (AKA as ASA) stands for?
ISO is an international standard in photography that measures the level of the films or camera’s sensor’s sensitivity to light.
Originally, ISO speeds included both the arithmetic ASA value (used in the U.S.) and the logarithmic DIN value used in Europe (ISO 400/33º for Kodak Tri-X, for example), but now they just use the arithmetic value (ISO 400).
The higher the ISO/ASA, the shorter the exposures you can get away with. If your exposure is planned at ISO 100 for 2 seconds at F8.0 - using ISO 400, you can do a 1/2 second exposure at the same F8.0.
(ISO stands for International Standard Organization and is the same as the older term ASA--American Standard Association.) The two films you mention, Fujichrome Velvia (ISO 50) and Fujichrome Provia (ISO 100), are both slow films.
Like the advice above, you might want to try setting a higher ASA number. The higher this number the more quickly the camera captures light - it is a holdover from the days when you purchased faster film.
As with film, the higher ASA the more noise, the digital sensors also introduce more noise with higher ISO. A normal ISO for most digital cameras is from 50 to 200, with possibilities of increasing to 3200 or even higher in advanced cameras.
In these standards, both arithmetic (ASA) and logarithmic (DIN) speed values are expressed in a single ISO term. For example, a film with a speed of ISO 100/21° would have a speed of ASA 100 or 21 DIN.
In the era of analog cameras, ISO was also known as ASA. In the analog era, ASA depends on the film inserted into the camera. But now a days, ISO can be set as one sees fit by toggling the ISO setting of the camera.
A rating that determines the light sensitivity of the film; ASA (American Standards Association) and ISO (International Standards Organization) provide a standard measure by which all photographic film speeds are determined.
Edwin’s comment - I explained to Allan that ASA and ISO are the same, but someone that references ASA is dating him or herself as someone who came of age photographically in the 1960s or 1970s.
Mexican sunset ...
The colour film he took with him was Kodak Ektachrome and Kodak Kodachrome (ASA 10).
system from the International Organization for Standardization (thus the ISO, which is used as an abbreviation for the group and the film speed) and are the giant numbers you'll typically see on a box of film. You'll also see the abbreviation ASA ...
IMPORTANT
Digital Push VS Manual ASA
It should be mentioned that many digital cameras allow you to manually set the film speed (ASA).
-ISO - International Standards Organization. Used instead of ASA as prefix to film speeds. The scale is identical to the ASA scale.
Film speed. The relative sensitivity to light of photographic film. Measured by ISO (or ASA or DIN) rating. Faster film (higher number) is more sensitive to light and requires less exposure than slower film. See also Speed.
Pattern printed on the side of a 35mm film cassette, which is used by the camera to sense the required ISO/ASA filmspeed setting. The film speed is sensed by means of electrical contacts pressing against the canister, so dirt can cause miss sensing.
ISO sensitivity expresses the speed of photographic negative materials (formerly expressed as ASA).
Since digital cameras do not use film but use image sensors instead, the ISO equivalent is usually given.
Films of different types like color, black and white, speed in ASA or DIN, tripod stands, remote shooting, filter lenses, shadow hoods etc.
EI stands for "exposure index," the first number is the old American ASA or modern international ISO film speed, and the second number is the German DIN film speed. Confusingly, the degree symbol refers to the DIN film speed and not to temperature.
Film sensitivity
The information is given in an ISO value, which replaced the earlier DIN and ASA (American Standard Association).
Film scanner
Hardware for digitising negatives and slides. (Flash Film Scanner) ...
International Standards Organisation. In a digicam it relates to the sensitivity of the camera's sensor / meter system (ISO100, ISO400 etc.). Previously known as "ASA".
JFIF
Also known as EXIF it is a certain specification of the JPEG file format.
 See also: Film, Light, Photograph, Camera, Speed
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