The differences between Eastman models 25, 25 B, 25 C, 30, and 40 are primarily cosmetic. Mechanically, they are very similar. The Model 30 was originally intended for use with tungsten lamps and the Model 40 for use with xenon lamps.
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The differences between Eastman models 25, 25 B, 25 C, 30, and 40 are primarily cosmetic. Mechanically, they are very similar. The Model 30 was originally intended for use with tungsten lamps and the Model 40 for use with xenon lamps.
