The twelve MULTIGRADE filters are numbered 00-5 in 1/2 steps, with the lowest filter number corresponding to the softest contrast. Filters are available in sets of filters 8 . 9x8 . 9cm (3 1/2x3 1/2 inches) and 15 . 2x15 . 2cm (6x6 inches). They can be used above or below the lens and can be cut to fit the enlarger filter drawer. Filter sizes 30x30cm (11 . 8x11 . 8 inches) are available to special order.
MULTIGRADE filters are very easy to use: no complicated calculations are needed when changing from one filter to another. The exposure time for filters 00-3 1/2 is the same; that for filters 4-5 is double.
Reviewed by 2 customers
The price is indeed higher than the small set, but after using the smaller set I think the larger filters are better. In my Beseler enlarger the small filters are placed in between the negative and the lens. I have found that they can get scratches and fingerprints that compromise the final print. The larger filters are placed between the light source and the negative. Any degradation of the filter should not be magnified through the lens.
In the dark room, little to no errors can be made and still receive a decently good picture. With that said, using this filters reduced the amount of time spent, and cost me more money than the small [$]set. If you are a film student just getting started into photography, purchase the cheaper set. You would be much better of, it saves time and money.