A 7½W bulb is recommended when using certain safelight filters with specific light sensitive materials. Please refer to the product data sheet packed with the material you are using for filter, lamp, and distance recommendations. In addition, the 7½W bulb can be used instead of a 15W bulb to reduce light output if safelight testing indicates fogging begins to occur too quickly with the higher wattage lamp. Suitable for use in all safelights and other lighting fixtures that accept a standard E26 medium screw base bulb. |