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02-24-2015, 03:45 PM   #16
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Well, according to Mr Neil Van Niekerk, zooming should be done depending on how far the wall is. Also, the gn provided is based on the maximum zoom capability of the flash (when available).
I've decided to go for a more powerful (58) and with zoom head, Yongnuo 560 II, rather than the inexpensive one I was referring earlier.
Thank you for your insights.

Paul

---------- Post added 02-24-15 at 03:47 PM ----------

QuoteOriginally posted by skyoftexas Quote
A good question. Thanks for asking it.
I believe the answer to the question is, nope... A zoomed flash will have a much longer reach, not possible with a Flashbender or the like...

02-26-2015, 05:57 AM   #17
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QuoteOriginally posted by Flugelbinder Quote
I believe the answer to the question is, nope... A zoomed flash will have a much longer reach, not possible with a Flashbender or the like...
That's correct, the answer is "nope".

You want to create a big bright patch on the wall/ceiling in order to create a big (secondary) light source. If the wall/ceiling is not close by, the patch created by the flash will be much bigger than needed and thus also cause less light to arrive at the subject (from the desired location). Hence, it is useful to be able to zoom (as opposed to block), so that the light from the flash is focused to a smaller area and thus creates a smaller, but brighter patch.

If you simply block the light, the patch will also become smaller but will have the same low intensity as without the blocking.

The light "focusing" property of zoom heads is the reason why manufacturers publish the GN at the highest zoom setting. If they published the GN at the 35mm setting, for instance, it wouldn't look nearly as impressive.
02-26-2015, 06:08 AM   #18
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QuoteOriginally posted by Class A Quote
That's correct, the answer is "nope".

You want to create a big bright patch on the wall/ceiling in order to create a big (secondary) light source. If the wall/ceiling is not close by, the patch created by the flash will be much bigger than needed and thus also cause less light to arrive at the subject (from the desired location). Hence, it is useful to be able to zoom (as opposed to block), so that the light from the flash is focused to a smaller area and thus creates a smaller, but brighter patch.

If you simply block the light, the patch will also become smaller but will have the same low intensity as without the blocking.

The light "focusing" property of zoom heads is the reason why manufacturers publish the GN at the highest zoom setting. If they published the GN at the 35mm setting, for instance, it wouldn't look nearly as impressive.
Thank you.
That's what I was thinking.
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