"Paul Furman" <paul-@[EMAIL PROTECTED]
> wrote in message
news:oSxMj.3509$vF.2071@[EMAIL PROTECTED]
> tony cooper wrote:
>
>>>>>>> skippy-007@[EMAIL PROTECTED]
quotes...
>>>>>>>> The camera plane is a horizontal line that runs
>>>>>>>> directly across the camera position as it relates to the positon
of
>>>>>>>> the
>>>>>>>> subject.
>>
>> In the sentence quoted, it's perfectly clear
>> that the plane is being extended in the form of a line.
>
> It is unclear without knowing if we are looking at a side view or top
> view. The sentence only describes a line not a plane. The only plane
that
> makes sense would be the film plane or sensor which is perpendicular to
> the line connecting the camera & subject. Or maybe it's the plane that
> meets the horizon? No way to know.
>
> This next part seems unrelated but suggests it's a discussion of the
line
> connecting the camera & subject:
>
> >>>>>>> The subject is at the center of a circle and the camera
> >>>>>>> is at the outside edge of the circle so we are able to move
> >>>>>>> lights around an invisible circle at different degrees
The way I read it, the OP is looking at a plane -- similar to the film
plane -- which extends around the subject in a circle. If one were to
place
lights, either flash or floodlights, on that plane, one could maintain a
given lighting ratio while shifting the lights around the subject. One
could then vary the effect without altering the exposure as long as the
subject to lights / camera remains constant.
This could be useful if one wanted to quickly change from a side lit shot
to
a more frontal exposure. One would merely move the lights but not have to
alter the exposure settings.
I've seen this discussed in a few books I've read on the subject of studio
lighting, but there is usually a cautionary note that, as one shifts the
lights, new highlights can pop up and throw off the exposure setting --
effectively defeating the careful planning and meticulous work. Of
course,
eventually, one would gain enough experience to predict this anomaly, and
it
should prove to be a good way to organize a portrait studio where one
shoots
more than one style of portrait.
Take Care,
Dudley
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