Greetings from Colorado, USA,
As I'm trying to get ready for this weekend's Lights of December parades, I'd like to expand on the existing thread to elaborate some of my concerns and thoughts:
Among my tools:
* K20D, K10D
* built-in flash
* Pentax AF360FGZ flash (has wide-angle diffuser), Sto-Fen Omni-Bounce, Fong Lightsphere II Cloud dome diffuser
* fastest lenses I have: 50/1.4, 85/1.8, 28-75/2.8, 70-200/2.8 (rather large and heavy)
* other candidate lenses: 10-17, 18-55, 18-250
Perceived obstacles include:
* focusing in the dark - sometimes too dark for auto or even manual focus; can use at least pop-up flash for
AF assist; don't know how well this works (especially outdoors w/moving objects)
* white balance from hell: some worse-than-dreadful combination of street lights, vehicle headlights, storefront lights, fake luminarias, strings of LED lights, flash (thankfully, not *all* in one shot (;-) )
* some lenses may not play nice with at least built-in flash - 10-17 too wide for full coverage, long lens like 18-250 probably too far to light at long end
* for relatively close-up people shots, flash diffusers provide more flattering light but reduce valuable light output some amount
Some types of shots I'm thinking of:
* long(ish) exposure w/wide lens and flash: frozen foreground action w/background blur (e.g. pan, zoom, twirl)
* long(ish) exposure zoom bursts - floats w/strings of lights make for some cool shots
* extreme bokeh - close focus, lights in background w/fast lens wide aperture (full range of auto-ISO?)
* crowd and/or float shots w/18-55 or 28-75 and built-in flash; max light would add wireless AF360 in one hand (I like the flash-on-monopod idea, even at the expense of carrying around *even more* stuff). What mode for best success w/flash(es) - manual, green, program? Auto ISO or fixed, e.g. 400 or 800? Try to manual focus, use medium aperture like f8?
* small aperture star shots - requires long exposure on tripod; tripod a liability in crowds, but might be able to find a suitable out-of-the-way location
Any insights would be appreciated from those who've already figured out some of the various challenges. (Posting etiquette reminder: please quote only for context.)