asamimasa wrote in post #14119412
All of the current speedotron browns have only one stop of adjustability according to the manufacturer site. This means that with a 1200w/s pack, you can only have the full 1200w/s blast or 600w/s, and in my opinion, both are way too powerful. People will tell you that you can never have too much power, but very few people actually use their flashes at full power all the time. You'll find yourself often having to go to f32 and beyond, especially indoors. And because you'll have to move your lights back to use a larger, more reasonable aperture, you'll also be compromising softness of light (since closer your modifier is to subject-> softer light).
It sounds like you've never used a pack and head system before.
With one light, you can get 1200w/s, 900w/s, 600w/s, 450w/s, 300w/s, or 225w/s. As you add heads, the power divides. With 2 heads you can get 600w/s, 300w/s, 150w/s, and 75ws. With 4 heads on one 1200w/s brownline pack, you can get as little as 22.5w/s.
It totally depends on when and where you shoot as to whether or not a certain amount of power is going to be too much and then even if it is, you can use ND filters. You can never add more power to the max power rating of a flash. That's why I use packs. I shoot outside and I don't always shoot one person or smaller scenes. I do cars, I've done larger setups. It's simply not enough for me and trying to use HSS in TTL mode to overpower the sun just isn't an option here. Even then, I can turn the power down when I need to. I have an 800w/s Dynalite pack I can shoot at 800w/s or 50w/s, IIRC. Monolights usually have even better adjustability.
asamimasa wrote in post #14119412
Something like a Canon 580EX or Yongnuo 560 will have more than enough power for indoor use unless you're trying to fill up something like a 7' parabolic umbrella and trying to shoot at f22.
What happens when it isn't enough power?
asamimasa wrote in post #14119412
You mentioned travel system, so I assumed this would be used outdoors/not in a home studio. If it's a home studio, a pack head system makes more sense, but if you're hopping through some foreign countries, a system like this is not something you want to deal with unless you're specifically going to use it (think Joey L).
I also mentioned monolights. There's also battery power pack and head systems. Look at the popularity of the Elinchrom Quadra system. You just can't beat it and most everyone on here that's used them love them. But then again, it depends what you shoot and how you shoot. You're not going to be able to overpower the sun with one speedlight unless you're using TTL and then that's something I don't deal with. But my system is light and travels easy for when I need the extra power.
asamimasa wrote in post #14119412
I don't get why you'd be so against having to deal with speedlite batteries, even with a pack head system with batteries, you'll only get ~250 1/1 pops with a full charge.
And when I'm not shooting at full power I get a lot more pops. When I'm on location and I don't need a battery, you still do and you're still at a finite amount of shots. When I have my Dynalites and I'm shooting, I'll have more than enough power that I need and only require one battery, which can be switched out when it's dead. I don't have 4 batteries for each light that needs to be carried around with me. Those days are the ones that I spend the previous night charging up at least 24 batteries.
A neat trick I'd like to try is a light weight monolight that's about 300w/s and a VML velcroed to it. It's an all in one light with way more power than a speedlight and is one mostly self contained unit.
I only take my speedlights when I know I can get away with it.