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Archive 2013 · Canon flashes
  
 
BrianO
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p.3 #1 · p.3 #1 · Canon flashes


cgardner wrote:
...Show me some actual results on a sunny day with a scene identical to my test and then we can continue the debate.


If I shot an identical scene under identical lighting of course I'd get the same results. But not every shot will be under the exact same conditions; that's why I said "it depends on aperture and ISO setting."

Are you deliberately being obtuse?



Feb 02, 2013 at 05:59 PM
cgardner
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p.3 #2 · p.3 #2 · Canon flashes


BrianO wrote:
Exactly; as I said before: we aren't all shooting under bright mid-day sun, so your one-size-fits-all statement that 7 feet is the maximum range in HSS isn't true...as I have just proven.

You've got that right.


The complete context of the sentence you selectively quoted was:

"Yes the practical range is limited in HHS mode with even direct flash to 7ft with one and 10ft with two (I know because I tested range at full 1/1 power) but that range works for most people shots outdoors in direct sun and the ability to blur the distracting background makes a huge difference in the visual impact of the foreground subject.

I agree it would have been clearer like this...

"Yes the practical range outdoors in direct sun is limited in HHS mode, even direct flash, to 7ft with one and 10ft with two (I know because I tested range that way at full 1/1 power as shown in the examples ) but that range works for most people shots and the ability to blur the distracting background makes a huge difference in the visual impact of the foreground subject.



Feb 02, 2013 at 06:03 PM
dmacmillan
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p.3 #3 · p.3 #3 · Canon flashes


Gyroscope wrote:
I want to get to know off camera flash and do flash enabled black background photography and be comfortable enough to do a bit of people photography during my travels. I have a 7D which seems to be a good option for flash with its built in flash controls (unlike my 5D2's) and I have an old 420ex. .. Also should I get some sort of transmitter or is it fine to just use the on camera flash as the trigger for now?
.
What was the question? Oh yes.

I concur with other posters who recommend starting with what you have, just adding an extension cable. You'll be surprised at how versatile that can be. I don't have to tell you how precious space and weight is when traveling, that should handle most situations.

For black background photography you might want to add other lights and some trigger mechanism? Do you mean by this photography in a controlled situation? If so, you can go with cheaper and simpler solutions. Go to strobist and find examples that you like of what you want to do. Read the technical stuff about the shot and use that info as a jumping off point.

I love your landscape work. It's very dramatic. You'll have no problem working out that flash element.



Feb 02, 2013 at 08:26 PM
cgardner
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p.3 #4 · p.3 #4 · Canon flashes


BrianO wrote:
If I shot an identical scene under identical lighting of course I'd get the same results. But not every shot will be under the exact same conditions; that's why I said "it depends on aperture and ISO setting."

Are you deliberately being obtuse?


No. You just didn't communicate what you were trying to say correctly. Re-reading the thread had you first said "maximum range would be greater on a day that wasn't sunny, or there was no direct sun on the subject or background" . I would have understood what you meant there and agreed. I didn't read your follow-up carefully [my bad] but it too could have stated more clearly also.

Your first statement about aperture and ISO as stated, without mention of a different ambient level while correct for regular flash, is not for HSS the mode under discussion at any ambient level. Since it appeared to me you were referring to the cause and effect with regular flash I explained (for others) how HHS is seen as a continuous source (something many don't realize) and you statement, taken at face value, was not true.

It is true that on a overcast day the max range would be greater than 7ft. because the flash needs less power to match the ambient but you said nothing at first about there about the light level changing. It's also true that at that greater max. distance on an overcast day changing ISO or aperture (in opposite directions to keep the overcast ambient constant) would have no effect on that new. max distance. The goal being the same: recording the scene with a full range of detail.

I also mentioned that in situations where I don't need to battle the sun directly I shoot in M mode at 1/250th so the flash does not automatically shift into HSS if camera is in Av some bright spot in the scene pushes shutter over the sync limit shifting the flash into HSS.

In conditions other than when direct sun is hitting the subject and background AND when one wants to keep those areas under clipping the ambient light is usually weak enough to put the shutter at x-sync (e.g. 1/250th) ISO at 100, and get a wide enough aperture to isolate a foreground subject with regular flash. That's preferable in any situation because there is more power available in regular mode. More power isn't necessarily always needed for greater shooting distance. For portraits where the flashes are relatively close it allows the use of modifiers which typically cut light on the subject by 1-2 stops.

I can't and don't try to cover every situation, just explain how the gear I own works illustrated by examples of how I use it. For example some photographers will gang 4-6-8 flashes in HHS in a single SB to overcome the power drop problem and get more range for shallow DOF backlit subject in direct sun like a snow boarder or motocross rider 30 ft away. I don't do that so I didn't mention that possibility either because in those situations I just put the camera on 1/250th so flash stays in regular mode for more range and select a background that will not be distracting at the f/11 aperture needed for correct exposure.




Edited on Feb 05, 2013 at 10:48 PM · View previous versions



Feb 03, 2013 at 01:43 PM
BrianO
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p.3 #5 · p.3 #5 · Canon flashes


BrianO wrote:
Are you deliberately being obtuse?


cgardner wrote:
No. You just didn't communicate what you were trying to say correctly.


Me? It was you, as you already admitted:

cgardner wrote:
I agree it would have been clearer like this... "Yes the practical range outdoors in direct sun is limited in HHS mode..."


Time for us to get off this thread unless there is some new information to add. Stop rehashing your error; it's water under the bridge.



Feb 04, 2013 at 12:01 AM
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