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Re: Solution...
In reply to Fave Photog,
3 months ago
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Fave Photog wrote:
michaeladawson wrote:
Fave Photog wrote:.
The determining factor is background exposure (not flash, the flash just fills in).
Rear sync is not needed for FILL flash. Front sync works just fine with fill flash. The purpose of REAR sync is to freeze subject motion as described in my above reply.
That is not the "purpose" of rear sync flash.
Another person who doesn't understand the difference between front and rear sync.
You can freeze a subject just as easily with front or rear sync.
True, but it's what occurs AFTER the flash fires that matters. As EXPLAINED, with front sync, the flash fires as soon as the shutter opens. Therefore, any movement by the subject AFTER the flash fires, but before the shutter closes, will cause the subject to become blurry due to motion blur, thereby causing the subject to appear out of focus.
That problem does not occur when using rear sync, because in rear sync mode the flash fires IMMEDIATELY before the shutter closes, thus NOT allowing any subsequent movement by the subject to be recorded.
Use a shutter speed that is too long (as when trying to capture ambient light) and you will also end up with a blurred subject with either method.
ROTFLMAO! Stop spreading such nonsense...please! The entire purpose of rear curtain sync is to insure that the subject will NOT appear out of focus due to motion blur, ESPECIALLY when using slow shutter speeds to capture ambient light.
--
The Five 'Ps' of Photography:
*Proper Planning Prevents Poor Performance!*
This is my last reply to you. It's not worth my time responding to such poor responses. If the shutter is open for a given amount of time, lets say for the purpose of argument 1/30s, it makes no difference for subject blurriness whether the flash fires at the beginning or the end. If you fire the flash at the beginning then you can get subject blur after the flash fires but before the shutter closes. If you fire the flash at the end the subject can be moving before the flash fires when the shutter opens. Either situation can cause blurriness. The only difference is which direction the subject blur appears to move. In many cases rear curtain sync is desirable because the direction of the motion blur seems to make more sense to our brains. But the amount of blur is the same.
--
Mike Dawson
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