At 09:47 12/14/01, C.H. Ling wrote:
The MC 50/1.4 is definitely cooler (color bal.) than the SC one. The lens
you tested is <1,000,000 I think you need to try the SN>1,100,000 one, it is
further sharper but color under fluorescence without correction is not a
fair test condition for the lenses.
C.H.Ling
Color balancing fluorescent light is much more difficult than incandescent
(tungsten) because it isn't just a "roll-off" in a region of the visible
spectrum. Fluorescent and most other gas discharge type lighting (mercury
vapor, sodium vapor, etc.) have significant spikes of specific wavelengths.
Worse yet is mixed lighting that has lighting sources of different
types. Color balancing those situations can be nightmarish, often
impossible. Look at what you shot to see if there's a possiblity of mixed
lighting in them (daylight coming through windows, stage with tungsten
based lighting, etc.).
-- John
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