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Microfilm at ISO 100 | by threepinner
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Microfilm at ISO 100

This is an ordinary street photo, but, for me a big event. This is shot with the microfilm, the high contrast low speed film for document recording.The emulsion is very thin.

The sensitivity of the film has been no more than ISO 6 for pictorial use. I have tried Microfine, D-23, POTA, TMAX dev, Finedol, Papitol, Stoeckler, etc to increase the ISO, but all failed. Now, I found an old recipe for developing document film and applied it. Bravo ! it worked. This shot is exposed at ISO 100 !


Iwamizawa, Hokkaido.

Canon AE-1, Sigma Macro 90mm F2.8 (1/250, F8), Kodak Microfilm Imagelink HQ, developed with H&W control ( ) for 18 minutes.


Using this, I can get quality image equal to (or better than ) 6x9 camera with a 500 grams of cheap camera, at hand held ( or on a monopod) condition.



H&W control


Solution A:

Water 50 ml

Sodium sulfite 1 g

Hydroquinone 0.16 g

Sodium carbonate 4.6 g

Phenidone 1.1 g


Solution B:

Water 50 ml

Sodium sulfite 8 g


Add Solution A to Solution B, then add water to make 132 ml of concentrate.


Phenidone dissolves with difficulty. Use water heated to 55° (130°F). Mix the chemicals in the order shown, and be sure each is completely dissolved before adding the next.

This is a concentrate. To use, add water to make to 2.1 litres of working solution per 132 ml of concentrate (approximate dilution of 1:16). Process at normal development temperatures with intermittent agitation for 14 to 18 minutes. Use working solution once and then discard.



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Taken on December 2, 2012