Above are images taken, with the filter on the camera, of two of the light sources: the Halogen and Reveal bulbs. The main thing to notice is that the Reveal 100 bulb comes out brighter than the Halogen 60 bulb. This is due to the fact that the Reveal bulb simply emits more light, even though operated at a lower temperature, due to the higher wattage. The Reveal bulb has a light output of 1,260 lumens, while the Halogen bulb only has 870 lumens. This often causes some of the pictures taken with the reveal bulb to come out more exposed than those with the Halogen. As explained in the Modeling section, this difference in light output has been incorporated into the transfer function.
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