Reciprocity failure : LUSENET : Large format photography : One Thread

Does anyone know of a complete list of compensation exposure times for all film brands and speeds available. Steve Simmons covers some film types in his book "Using the View Camera" but for instance, mentions AGFA Chrome ASA 100 while I use ASA 50. In black and white film he has only one line for compensation for all AGFA B&W films. This has probably been covered already in the formum if someone can direct me to the relevant msg.

-- Jack Leonard (, April 16, 2000


I doubt there is a 'one site has all' list of these but it is fairly simple to bookmark the professional films sections of the Kodak / Ilford/ Fuji sites and get the info directly from them. One would assume that the manufacturers' PDF files are copyrighted and not to be reorganized in some arbitrary third-person Web site. And locating the information is so simple that it hardly justifies any effort to do so.

I download the info for the films I have, print out the table(s) I need and tape them into my Kodak Professional Photoguide.

-- Richard Rankin (, April 16, 2000.

Kodak supplies their suggested RF info in the pocket guides. Call and ask for a copy. From experience, most older emulsions react to the same times. the new delta or tabular grain films are more resistant to RF than the older emulsions. Follow S. Simmons times and they will be as close as you need. Just remember to couple these times with the correct processing reduction times. James

-- james (, April 16, 2000.

In any event, the AGFA page for data sheets on B&W and colour professional films is:

-- Richard Rankin (, April 16, 2000.

The others URL are

FUJI : op=generic&CategoryId=158&ContentType=PDF&UserTypeId=4&pagetype=Catego ryContent

KODAK : bankIndex.shtml


-- Dominique Cesari (, April 18, 2000.

The reciprocity charts that I've seen, and that I use, divide film into three categories, T Max 100, T Max 400, and "all others." I received mine from John Sexton and Phil Davis (I think) at their workshops. The two charts have different numbers but both just lump all non-T Max films into a single group.

-- Brian Ellis (, April 18, 2000.

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