What is the equivalent of ASA 25 in DIN rating?

Film speed conversion table

ASA scale DIN scale GOST
250 25° 180
320 26° 250
400 27° 350
500 28° 350

What does DIN and ASA mean?

Photographers have used many systems to measure film speed, but before 1987, ASA and DIN formed two of the most important. The older standard, ASA, used an arithmetic scale. Created by the German Institute for Standardization, DIN used a logarithmic scale, so doubling sensitivity added 3 degrees to the DIN number.

Is ASA equivalent to ISO?

There’s absolutely no difference between ASA and ISO. It’s simply a change of names to internationalize film speed readings. ASA 200 film and ISO 200 film have exactly the same speed. Today’s print films are less grainy at both higher and lower speeds.

What is the other term for ISO ASA DIN?

It is usually expressed as an ISO (International Standards Organization) number (formerly called, and identical to, the ASA [American Standards Association; now American National Standards Institute] number), or, in Europe, as a DIN (Deutsche Industrie Norm) number.

What ASA setting should I use?

The ASA rating tells your camera what type of film your camera is using so it can adjust accordingly. ASA and ISO mean the same thing. The rating refers to the film’s reactivity to light. Generally, 200 is pretty versatile and very common, while 100 is good for outdoor shots.

What is the difference between DIN and ISO?

ISO Standards are those issued by the International Standards Organisation, whilst DIN Standards are issued by the German equivalent of British Standards (BS).

What does ASA 400 mean?

The film speed is the time needed to expose the film to create a good chemical reaction. It is usually said that films with ASA higher then 400 ASA are fast, because the respond fast to light. And it is also usually said that films with ASA value lower then 100 are slow, because they take longer to respond to light.

Are DIN standards still used?

National standards (DIN) will be/have been largely replaced by international/European standards. DIN standards are still valid for products having no ISO or EN standards.