You are absolutely right about this. I have tested the output of the spiral BLB tubes with an integrator and it takes at least 45 seconds from start-up to full output. But no problem, just turn them on and allow them to warm up for a minute or so and you are ready to go.
I do recommend some precaution in where you place the lights. Using them in a reflector suggests that they will be at or above eye level so you should take steps to cover or enclose the bulbs when exposing. Or wear UV googles.
Originally Posted by Monophoto