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p.1 #5 · p.1 #5 · Manual flash as fill on a hot shoe with variable shooting distance... | |
TooManyShots wrote:
The subject says it all. Any tips as to how to make it work effectively? I have a Yongnuo 560 III. It worked well with bounce flash indoor, off camera handheld. I tried to use it as fill outside with unpredictable subject distance, I got into troubles. Too much power. It appears even at 1/128 power output, the power is too great at a distance shorter than 5ft. I am thinking about getting the Yongnuo 568ex. I can get full sync at 1/400s on my d7000. With a faster shutter speed, I get shutter clipping.
The way TTL flash works is that automation in the camera meters the TTL preflash and sets the flash power level appropriately for the scene that it sees. Automatic point & shoot flash, like say compact cameras do. Not always precisely perfect flash, but ballpark close, and we can adjust it with Flash Compensation.
The way manual flashes work is that they simply flash at the power level that you manually set in them. Nothing else matters except what you do. There is no automation, and no point&shoot. If you don't set the manual power level right for the situation at hand, it won't be right. If you do set it right, it will be right. But otherwise, there is no reason to expect it to be even ballpark close. It is manual flash, set right only by YOU.
You could use a hand held light meter to meter the manual flash, and set the level that way.
Or you can use Guide Number in the flash manual to compute an appropriate level.
Even memory of past experience can be approximately right.
Otherwise, the usual plan is trial and error, if its too bright, turn it down, etc.
But anything that YOU do not do will not get done any other way. ONLY YOU controls manual flash.
You have made no statements about your efforts to do so. I'm thinking it is not happening.
The YN560 is a manual flash, but your problem sounds as is you expect the manual flash to be automatic? I can make one promise, that is not going to happen. The tip is that you have to do something yourself to set Manual flash correctly.
Maybe you just need a TTL flash? To actually be capable of automatic point&shoot flash? The YN568 should be a good choice. It will have both a TTL and a Manual menu.
A few things you said don't compute, but not sure I understand the situation.
The Y560 III manual has a Guide Number chart that says ISO 100 24mm zoom 1/128 power has a guide number of 8.2 (feet). That means at five feet, an approximate correct full exposure is GN 8.2 / 5 feet = f/1.6. You're not using f/1.6 outside in sun? I'm not sure what you said, but it is not likely too bright then. And certainly a manual flash will NOT BE AN AUTOMATIC FLASH EXPOSURE.
Edited on Aug 06, 2015 at 05:35 PM · View previous versions
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