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06/15/2006 04:36:45 AM · #1 |
Hey all,
I have a Sigma DG 500 flash for my 350D. Usually I just set it to TTL mode and let the camera and flash work in perfect harmony.
I was playing around with it last night (In prep for my first, all be it small, civil wedding shoot tomorrow!) and could not get a shutter speed higher than 200th sec with the flash on, even in full manual mode and flash set to full or 1/8th power?
Is this normall for all flashes or just this particular one?
I just expected to be able to get a faster speed!
AL. |
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06/15/2006 04:44:58 AM · #2 |
No, I think 200 is your max bracketing, but I dont see why you would use that?
best setting I have found for shooting with flash is F5.6, iso 400 and shutter on 1/60.
The results are awesome. |
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06/15/2006 05:33:34 AM · #3 |
Originally posted by Guyver:
No, I think 200 is your max bracketing, but I dont see why you would use that?
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No deffinately the max shutter speed I could achieve...
I wanted to put the flash on manual, max power and see how fast a shutter speed I would need to get an acceptable exposure - Just testing the limits, but it wouldn't play ball!
I'll try your settings out and see how they fair - I would have thought that 1/60th would be a little slow to catch candids and would cause motion blur though... |
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06/15/2006 05:49:51 AM · #4 |
Originally posted by pix-al:
Originally posted by Guyver:
No, I think 200 is your max bracketing, but I dont see why you would use that?
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No deffinately the max shutter speed I could achieve...
I wanted to put the flash on manual, max power and see how fast a shutter speed I would need to get an acceptable exposure - Just testing the limits, but it wouldn't play ball!
I'll try your settings out and see how they fair - I would have thought that 1/60th would be a little slow to catch candids and would cause motion blur though... |
No ways man, 1/60th on iso 400 is perfect, trust me.
Youd be able to catch snot dripping off a camels nose in a cave. |
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06/15/2006 05:50:21 AM · #5 |
Are you talking about the EF-500 DG?
I had a quick look at the specs for the 500 DG on b&h and it says there that the flash supports high speed sync, so you should be able to select high speed sync mode on the flash and get better than 1/200th..
And to answer Guyver's question about why you would want higher..
Say you're taking a pic at ISO100, and want a shallow DOF in bright sunlight, so you pick F/2.8 in Av mode with your 50mm 'portrait' length lens mounted... In bright outdoor light you might meter about 1/800th - 1/1000th of a second. If the light is from behind you might want to fill it, but going to 1/200th means F/16 and too much DOF.
Hence high speed sync mode.
Cheers, Me. |
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06/15/2006 05:52:05 AM · #6 |
Originally posted by KiwiChris:
Are you talking about the EF-500 DG?
I had a quick look at the specs for the 500 DG on b&h and it says there that the flash supports high speed sync, so you should be able to select high speed sync mode on the flash and get better than 1/200th..
And to answer Guyver's question about why you would want higher..
Say you're taking a pic at ISO100, and want a shallow DOF in bright sunlight, so you pick F/2.8 in Av mode with your 50mm 'portrait' length lens mounted... In bright outdoor light you might meter about 1/800th - 1/1000th of a second. If the light is from behind you might want to fill it, but going to 1/200th means F/16 and too much DOF.
Hence high speed sync mode.
Cheers, Me. |
Eerrr... yeah... what he said!
LOL!
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06/15/2006 05:53:33 AM · #7 |
Originally posted by pix-al:
I'll try your settings out and see how they fair - I would have thought that 1/60th would be a little slow to catch candids and would cause motion blur though... |
Depends on how much abmient light you have...
If the flash is 4 or 5 stops brighter than the ambient light you'll probably not notice any blur at all, if it's pitch black you definately wont.
Cheers, Me. |
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06/15/2006 05:58:37 AM · #8 |
| ND filters were invented for a reason. |
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06/15/2006 06:01:14 AM · #9 |
Originally posted by pix-al:
1/60th would be a little slow to catch candids and would cause motion blur though... |
I think not much light will be recorded by the sensor before and after the flash fires, so motion blur should not be a problem - it's like having the shutter open in a dark room, but nothing is recorded till there's light? |
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06/15/2006 06:11:19 AM · #10 |
Originally posted by KiwiChris:
Are you talking about the EF-500 DG? |
No it is the non EF model. I think you are right in saying that the EF does support high speed synch though. That must be the difference!
I did a shoot the other day with a couple of young kids who would not keep still! I got a lot of blur in some shots, but am not convinced the flash was firing at all times as I was on auto TTL mode...
Well, I'll see how I go with it tomorrow and let you know!
Thanks all... |
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06/15/2006 08:19:30 PM · #11 |
Originally posted by Uusilehto:
ND filters were invented for a reason. |
Yup, so we could carry around collections of misc. filters in our bags. :-). I've got an ND grad, but never felt the urge to have std ND's in my collection.
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