Continuous fluorescent lighting for 4x5 format?

[keithwms]

I see. Well then I guess the only way to deal with the spikes is filtration.

Or avoid fluorescent lighting.

 

[JBrunner]

I see. Well then I guess the only way to deal with the spikes is filtration.

Or avoid fluorescent lighting.

Or use post color corection.

Often, on commercial shoots it is impractical to turn off all flo sources- a supermarket for instance. It is not practical to turn out the lights and replace all of the available illumination with your own. The lights available to suplement do not match the available illumination- say HMI's that happen to have a predominantly magenta spike. The supermarket flo's in this instance turn out to have a prominent green spike. So you can't filter at the camera, or color correct for one source without really screwing up the other.

So what do you do? In this case I usually add plus green to the HMI's to bring their spectrum as close as I can to the flo's. Now I am dealing with a uniform problem, instead of an uncorrectable mixed bag of spikes. Also, the overall greenish light (or magenta, depending on the varibles of a given scenerio) freaks out the necktie people, so you have that to watch, which is always amusing, and makes it worth doing, for that reason alone.

The resultantly uniform green can now be corrected with a camera filter, or by color timing. I personally usually opt for color timing, because it keeps the suits freaked out, and maintains the illusion that you are a master of dark alchemical arts, and also because I usually don't want to sacrifice my stop to yet another filter.

So that's an example of one particular scenerio I deal with, and how I personally go about managing it. YMMV.

[Pro driver on closed course- do not attempt- ]