On Sun, 13 Apr 2008 12:43:49 +0100, Rob Morley <nospam@[EMAIL PROTECTED]
>
wrote:
>In article <tor2045bpv8sjs3fg1nfaq59s4f1q83qom@[EMAIL PROTECTED]
>, tony cooper
>tony_cooper213@[EMAIL PROTECTED]
says...
>> On Sun, 13 Apr 2008 02:50:40 +0100, Rob Morley <nospam@[EMAIL PROTECTED]
>
>> wrote:
>>
>> >In article <12132-48014506-12348@[EMAIL PROTECTED]
>,
>> >skippy-007@[EMAIL PROTECTED]
says...
>> >> Camera plane.....The camera plane is a horizontal line that runs
>> >> directly across the camera position as it relates to the positon of
the
>> >> 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
>> >>
>> >> I am having a hard time grasping this..
>> >>
>> >Possibly because it's bollocks. For a start, a plane is a plane, not
a
>> >line.
>>
>> Of course it is a line. The line is indicated by the focal plane
>> mark on the top of most slrs.
>
>Its position may be indicated by a line, but a plane is not a line.
>
The definition of "plane" is "2. Geometry. a surface generated by a
straight line moving at a constant velocity with respect to a fixed
point."
The equator is not a visible line, but we describe it as a line that
encircles the earth. We also speak of lines of latitude and
longitude, but we don't expect to see them chalked on the ground.
>> The mark is a circle with line through
>> it, and you mentally extend that line. That plane is perpendicular to
>> the axis of the lens. The primary use of the focal plane mark for
>> most photographers is to measure the distance between the subject and
>> the focal point. On my Nikon, that would be a measurement of the
>> distance between the subject and the lens mounting flange plus 46.5mm.
>> That's useful to know in, say, macro photography.
>>
>Indeed, but that's not what the OP posted. As I said, with more context
>the intention of the writer may become clear, but as it stands it's
>little more than gobbledegook.
The poster is seeking information and admits that he has a hard time
understanding it. His intention is to obtain more information.
Criticizing how he forms the question does not provide that.
--
Tony Cooper - Orlando, Florida
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