Pitching of favourite brands and specific models without completely understanding the seeker's needs.... again.
Pitching of favourite brands and specific models without completely understanding the seeker's needs.... again.
It's ok if you want to buy either but make sure you know what you're buying in to....
Buy the Sigma because it is cheap, don't buy it because it is "better than" / "as good as" the 580EXII because it definitely is not....
Buy the Canon for the build, more reliable flash exposure, guaranteed compatability with future canon bodies and much better service centre....
the Pros of the canon also happen to be the opposite of the cons of the sigma.....
Btw, a guide number of 53 does not mean the flash can reach something 53 metres away.... the distance = GN / aperture... so to reach 53 metres at iso 100 you need a f1.0 lens.... and not any f1.0 lens, the flash only has a GN of 53 when your lens focal length is 105mm or greater.... try finding a 105 f1.0 lens....
Btw, a guide number of 53 does not mean the flash can reach something 53 metres away.... the distance = GN / aperture... so to reach 53 metres at iso 100 you need a f1.0 lens.... and not any f1.0 lens, the flash only has a GN of 53 when your lens focal length is 105mm or greater.... try finding a 105 f1.0 lens....
Precisely, that's why Canon 580EX's claim of guide number 58 doesn't mean it can hit 58m away.
That's why all factors taken in, 580ex with a guide number of 58 is only SLIGHTLY more powerful than a sigma with guide number 53
At ISO 100 F2.8 105mm, canon can reach 20.7m vs the sigma's 18.9m, which is effectively only about 1/2 stop more powerful.
Anyway to the thread starter:
Seriously, consider the Sigma. I'm not working for sigma, and I've no reason to push sigma, but my logic is this: If you're going to learn lighting, you can buy 2 sigma flashes with almost equivilant performance to a 580exII for the same amt of money. Add abit more money, and you can buy a studio trigger and use it with the Sigma's built in optical slave. Think of it as cheap portable studio lighting. Which in all honesty, is VERY helpful at times.
With 2 sigma flashes, + light modifiers, you can create a pretty good mini studio.
It may sound laughable, but I've even used my Sigma flash as a extra light source in actual studios.
This is something you can't do with any of the canon flashes.
The amt of stuff you can do with 2 flashes is going to be alot more than 1 flash gun.
Of course, if you're loaded, and you can well afford separate studio lights and multiple 580exIIs, you should just go ahead. Get what you need most. Really
BTW, the sigma you guys were talking about, is it come with manual adjustment feature?
Precisely, that's why Canon 580EX's claim of guide number 58 doesn't mean it can hit 58m away.
That's why all factors taken in, 580ex with a guide number of 58 is only SLIGHTLY more powerful than a sigma with guide number 53
At ISO 100 F2.8 105mm, canon can reach 20.7m vs the sigma's 18.9m, which is effectively only about 1/2 stop more powerful.
Anyway to the thread starter:
Seriously, consider the Sigma. I'm not working for sigma, and I've no reason to push sigma, but my logic is this: If you're going to learn lighting, you can buy 2 sigma flashes with almost equivilant performance to a 580exII for the same amt of money. Add abit more money, and you can buy a studio trigger and use it with the Sigma's built in optical slave. Think of it as cheap portable studio lighting. Which in all honesty, is VERY helpful at times.
With 2 sigma flashes, + light modifiers, you can create a pretty good mini studio.
It may sound laughable, but I've even used my Sigma flash as a extra light source in actual studios.
This is something you can't do with any of the canon flashes.
The amt of stuff you can do with 2 flashes is going to be alot more than 1 flash gun.
Of course, if you're loaded, and you can well afford separate studio lights and multiple 580exIIs, you should just go ahead. Get what you need most. Really
Is either Canon or Metz for me...
What's the price difference between 580EX II and Metz 58 than?
And how much difference is the performance?