Thinking Of A Different Temperature
No, I don't mean just waiting for summer to roll around. It'll roll around of its own accord without us wishing for it. Then we'll wish for winter...
What I mean is the business of lighting one way, seeing another, and ending up with a third option. And how to cope with it all.
I use studio flash units made by Elinchrom. They are fine items and have served well over several decades. Were i re-equipping the studio with someone else's money I might wish for Profoto, but as I have 5 lights already and a cupboard full of light shapers, I will stick to the Elinchroms.
They all have modelling lights to allow me to see what the pattern of light coming out of the front will be. That is all I can really tell with a modest degree of accuracy, though - the pattern - because the modelling light is a tungsten light bulb that is in aslightly different position from the flash tube.
A suggestion has been made that there might be an improvement if you put an LED lightbulb in place of the modelling lamp. Try it and tell me - my Elinchroms are 250EL and 500EL models.
I should not complain - I used to use sheet film and had to do a Polaroid sheet film test beforehand. Then I had to meter for two different ISO's and apply all the rest of the imaginary offsets as well. Each finished negative was a surprise and each finished print a version of reality that could never be repeated...