cdayton

Probably none. Haven’t shot film for 20 years and haven’t developed my own film since the late ‘50s so my knowledge of what is currently available is pretty limited.

Jack B Loc: Mount Pleasant, SC

There was an Extar 25 color negative film. I shot many rolls of it. It was a great film allowing very LARGE prints
Jack B

E.L.. Shapiro Loc: Ottawa, Ontario Canada

ASA was an American standard- ISO is International. In the early days, most ASA ratings for negative films included a 1 stop overexposure "safety factor" because it was determined that an overexposed negative was somewhat easier to print than an underexposed one. Later on, the safety factor was removed.

In Europe, the DIN ratings were used. The folk that manufactured Weston exposure meters had their own numbers.

Most experienced amateurs and professionals did their own tests based on their own working methods, equipment variations, and black and white processing preferences and determined their own "Exposure Indexes for the films they used. There were pre-mixed canned developer formulas such as Acufine, Ethol UFG, and a few German imports that recommended a higher ASA (ISO) starting point.

C-41 Processing is still available from some color labs- there is also a kit for those who wish to DIY. It's still around but not as popular as it used to be- in the olden days, every neighborhood mini-lab could process and print you color negative film. Both the film and the processing services have become more of a niche market.

williejoha

The film I used, we simply referred to as “S” type. ASA25 and had to be in the fridge.
WJH

foathog Loc: Greensboro, NC

maybe so but when you bought it it said ASA NOT ISO

Architect1776 Loc: In my mind

[quote=boberic]

PS, Check out page 21, there was ASA 32.
http://astrosurf.com/cmilovic/equipo/f1.pdf

wnagel Loc: Fair Oaks, CA

I agree. When working in a camera store we stocked, and I used, Ektacolor Pro. It was supposed to be used quickly, I.e short shelf life, and processed promptly. Most pros bought 20 roll packs that all were all from the batch. Then would take a picture using a color chart process the film and make a print to match the color chart. This would result in true colors.

amfoto1 Loc: San Jose, Calif. USA

Color or B&W? Color print or slides?

In B&W there was Kodak Verichrome Safety film of unknown ASA, probably around 25 (discontinued in mid-1950s). I think it was only available in medium format rolls (116, 127, 120, 620?). Subsequent Verichrome Pan film, also in medium format only, was something like 80 ASA.

In 35mm format (as well as medium format and sheet film in some cases), there were...

.... B&W Kodak film there was Technical Pan with ASA 25 (discontinued in 2004).

... color negative film, there was Kodacolor with ASA 25 (discontinued in mid-1960s).

... the 1980s & 90s there was C-41 processed Ektar 25 color neg film.

... color reversal (slide) film there was Kodachrome II with ASA 25 (discontinued mid-1970s). There might have been a Kodachrome 25, which was alos ASA 25, sold in some markets at the same time or later.

I'm not aware of any other Kodak films that were 25 ASA. There haven't been a lot of 25 ASA films in other brands, either. Agfa made 25 ASA slide and print films some time ago, I think.

Regarding ISO... when it was originally set up to start in 1974 it was a combination of ASA and DIN film speed ratings. Where films had previously been marked ASA 100, 21 DIN or ASA 400, 27 DIN, etc., the new International Standards Organization method was supposed to show ISO 100/21 and ISO 400/27, etc. Since then it's become common practice to simply drop the German DIN number (logarithmic) entirely and only use the old American ASA (arithmetic) rating number.... Even though "on the books" AFAIK nothing has changed, today for all practical purposes ISO and ASA are one in the same and no one is using the DIN numbers. Digital photography sped up this simplification, I'm sure.

Although ASA and DIN were probably the most common from WWII to the mid-1970s, there actually were were a number of other film speed rating systems. GOST was used in the USSR. Pre-WWII, Weston and General Electric meters each had their own system (which I've never used, but think the Weston was partly the basis for ASA). They both switched to the ASA system in the 1940s or 1950s.

polonois Loc: Lancaster County,PA.

[quote=boberic]For no particular reason I am trying to remember the name of the Kodak 35mm film I used to shoot. It was a 25 ASA film that had to be refridgerated. I think it was Varicolor professional. I can't remember if this is the right name. Sorta like standing in front of the open fridge door, and trying to figure out why. Does anyone remember the right name of the film--Thanks[/quote

Panatomic X or Technical Pan - Just guessing

Architect1776 Loc: In my mind

Here is some more information,
Looks like ASA 10.
https://retinarescue.com/kodachrome.html

Craig Meyer Loc: Sparks, NV

I think I remember Vericolor II at ASA 64. The same as the Globalist ISO 64. The other asa 25 I used was the famous Kodachrome.

Craig Meyer Loc: Sparks, NV

A joke among Kodak and their processors was "A typical consumer processing order is one roll with a Christmas Tree at each end." My, what changes have happened. I remember when my processing came out of my allowance. Not a lot of duplicates. Careful composition and focus and double check and breath holding and squeeeeezing the shutter was the rule!

hepcat

For those of us who can determine film type and speed in the darkroom by the corner notches... a little old-timey info:

ASA- American Standards Association

DIN- Deutsches Institut für Normung

GOST- GOST 2817-45 and GOST 2817–50 Soviet Union

ISO- International Standards Organization

https://en.wikipedia.org/wiki/Film_speed#Film_speed_measurement_systems

http://www.photographers-resource.co.uk/photography/exposure/Ref_iso.htm

wdross Loc: Castle Rock, Colorado

I know Kodachrome 25 was a 25 ASA rated transparency film. The only other film that can remember that was a 25 ASA rated film was a black and white film. The Varicolor that I remember was 100 ASA and I believe a 64 ASA version of Varicolor.

tjw47 Loc: Michigan

Vericolor ( VPS) was ASA 160.. I used to shoot it on my Graflex XL. Latest was Vericolor III.

Kodacolor ( ASA 25 ) was available until 1963.