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09-02-2008, 11:45 AM   #1
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Flash Sync

I own a istDS and a new Vivitar 285hv. Is there any way of getting around the 180 sync speed of the camera ? Thanks... Charles

09-02-2008, 01:35 PM   #2
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I think the only way around it is to buy a different camera that isn't pentax....

that sync speed is one of my (very few) gripes with the pentax DSLR's, 1/250 would be nice, just like the rest of the gang...
09-02-2008, 01:49 PM   #3
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QuoteOriginally posted by Charles1 Quote
I own a istDS and a new Vivitar 285hv. Is there any way of getting around the 180 sync speed of the camera ? Thanks... Charles
I'm not sure what you are trying, but you might find this is an interesting read.

Thank you
Russell
09-07-2008, 12:27 PM   #4
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QuoteOriginally posted by Charles1 Quote
I own a istDS and a new Vivitar 285hv. Is there any way of getting around the 180 sync speed of the camera ? Thanks... Charles
Charles, you don't specifically say you want a faster shutter speed - can't have it - 180 is max - BUT, you can certainly have a slower shutter speed!!

09-07-2008, 03:15 PM   #5
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There are too many people who want faster Sync speeds withotu knowing why they want it. Seriously, a fast external flash will give you a fast sync by merely flashing multiple times during the curtains opening/closing period. Why would you want a higher speed? They can take popup flashes off dslrs for all I care. It's a bonus feature, use it or dont
09-08-2008, 01:52 AM   #6
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High speed sync in flash photography is not used only to stop the action but also limit the light entering the camera.

Let's say you're shooting at the beach an the sun is high behind your subject. You need the flash to fill the subject, but one you decide to fire the flash you have to use 1/180s or slower, thus having to use smaller aperture, but I want to keep a thin DOF. What do I do?
09-08-2008, 04:11 AM   #7
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QuoteOriginally posted by Deni Quote
Let's say you're shooting at the beach an the sun is high behind your subject. You need the flash to fill the subject, but one you decide to fire the flash you have to use 1/180s or slower, thus having to use smaller aperture, but I want to keep a thin DOF. What do I do?
Polarizer, ND filter, or use HSS with an external flash. Do you have an external flash that supports HSS?

Thank you
Russell
09-08-2008, 04:55 AM   #8
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QuoteOriginally posted by Russell-Evans Quote
Polarizer, ND filter, or use HSS with an external flash. Do you have an external flash that supports HSS?

Thank you
Russell
Does the k100d support hss? If a p&s can use it's flash at 1/600s why can't a dslr?

An example:




Last edited by Deni; 09-08-2008 at 05:03 AM.
09-08-2008, 05:16 AM   #9
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QuoteOriginally posted by Deni Quote
Does the k100d support hss? If a p&s can use it's flash at 1/600s why can't a dslr?
The K100D supports HSS with an external flash that has tHSS support.

I don't know why a fixed lens camera can use its flash at 1/600, but I would guess it is partly because of size of the sensor and thus the size of the shutter or maybe that the fix lens camera has an electronic shutter.

Thank you
Russell
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