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flash pics dark at the edges
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Oct 16, 2013 10:17:55   #
anotherview Loc: California
 
Yes, the Inverse Square Law describing light falloff with distance applies here.

But the OP did not state the size of the group or the distance from the flash unit to the group. This info would help one to evaluate the situation for a better answer.

Meanwhile, as I noted earlier, "Some flash units come with a wide panel that that spreads the flash lighting more."

I presume this wide panel compensates for the slight extra distance from the flash unit to the right and left sides of the group, thereby moderating the effect of light falloff.

This opinion further presumes the OP used a wide-angle lens setting that would require this wide panel.
lightchime wrote:
Yes, but:

As the light spreads outward from the flash, the intensity of the light diminishes. If you draw a plane through the sensor and one at an arbitrary 15 feet away, the light will be greater in front of the camera than it is at the ends of the distant plane. The distance is greater at the ends and the inverse square does apply. This is exactly what you are saying, but not realizing that there is a greater distance at the spread of the light.

The point is that light is greatest directly in front of the source, but as it spreads, it diminishes.
Yes, but: br br As the light spreads outward from... (show quote)

View from Hickman Bridge Trail, Capitol Reef NP
View from Hickman Bridge Trail, Capitol Reef NP...

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Oct 16, 2013 13:38:07   #
Wall-E Loc: Phoenix, AZ
 
cthahn wrote:
If your photography knowledge is anything like the way you write, no wonder you are having problems. The slop English you use is disgusting. You do not mention what flash you are using so how do you expect any help.


Are you not taking your medication?
Why are you so nasty to people asking for help?
If UHH members are so bad, why hang around here?

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Oct 16, 2013 13:49:07   #
jrb1213 Loc: McDonough GEorgia
 
cthahn wrote:
If your photography knowledge is anything like the way you write, no wonder you are having problems. The slop English you use is disgusting. You do not mention what flash you are using so how do you expect any help.


This is a person who comments but has never posted their work. Do not trust their comments.

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Oct 16, 2013 14:19:47   #
OddJobber Loc: Portland, OR
 
cthahn wrote:
You do not mention what flash you are using so how do you expect any help.


Apparently Mr. Perfect's keyboard does not have a question mark. :shock: :shock: :shock:

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