Lighting Question

Archived from groups: alt.comp.periphs.dcameras (More info?)

Are "Daylight" flourescents or other flourescents at 5500K or 6500K not
balanced to the sunshine?

"CSM1" <nomoremail@nomail.com> wrote in message
news:lZbQc.181$ra6.148@newssvr24.news.prodigy.com...
> "Radio Man" <puns@verizon.net> wrote in message
> news IaQc.17394$QA5.14097@nwrddc01.gnilink.net...
> > What type of lighting or bulb would be similar to
> > outdoor natural lighting. This information will be
> > used for a webcam.
> >
> >
>
> The only daylight balanced light is a flash bulb or a photographic strobe
> (flash).
>
> There are light bulbs such as halogen that have a higher than house light
> color temperature.
>
> Photographic lamps are about 3200-3400 Kelvin. Daylight is about 5500K
>
> Go to http://www.bhphotovideo.com and search in Lighting & Studio for:
> BCA
> EBW
>
> ANSI CODE BCA is a 250 Watt bulb with 4800K Color Temperature it has a
> Medium base and a average life of 3 (three) hours.
>
> General Electric EBW Lamp - 500 watts/115-120 volts 4800k Average
life
> is 6 hours.
> This link is to the Lighting & Studio pages.
>
>
http://www.bhphotovideo.com/bnh/controller/home?O=NavBa...
>
>
> Since you are using a webcam, you should be able to color balance the
camera
> to a ordinary outdoor flood light. Color Temperature is about 3000K. Or
> maybe use one or moreof those new halogen Work Lights.
>
> --
> CSM1
> http://www.carlmcmillan.com
> --
>

Archived from groups: alt.comp.periphs.dcameras (More info?)

Yes they are.

Walmart sells an executive desk lamp for $20 that includes an
excellent 'near' daylight color bulb. I spotted it from half way
across the store and had to have it. I highly recommend it for any
indoor shots where accurate color is important.

Pj




On Wed, 4 Aug 2004 22:09:29 -0400, "Gymmy Bob" <nospamming@bite.me>
wrote:

>Are "Daylight" flourescents or other flourescents at 5500K or 6500K not
>balanced to the sunshine?
>
>"CSM1" <nomoremail@nomail.com> wrote in message
>news:lZbQc.181$ra6.148@newssvr24.news.prodigy.com...
>> "Radio Man" <puns@verizon.net> wrote in message
>> news IaQc.17394$QA5.14097@nwrddc01.gnilink.net...
>> > What type of lighting or bulb would be similar to
>> > outdoor natural lighting. This information will be
>> > used for a webcam.
>> >
>> >
>>
>> The only daylight balanced light is a flash bulb or a photographic strobe
>> (flash).
>>
>> There are light bulbs such as halogen that have a higher than house light
>> color temperature.
>>
>> Photographic lamps are about 3200-3400 Kelvin. Daylight is about 5500K
>>
>> Go to http://www.bhphotovideo.com and search in Lighting & Studio for:
>> BCA
>> EBW
>>
>> ANSI CODE BCA is a 250 Watt bulb with 4800K Color Temperature it has a
>> Medium base and a average life of 3 (three) hours.
>>
>> General Electric EBW Lamp - 500 watts/115-120 volts 4800k Average
>life
>> is 6 hours.
>> This link is to the Lighting & Studio pages.
>>
>>
>http://www.bhphotovideo.com/bnh/controller/home?O=NavBa...
>>
>>
>> Since you are using a webcam, you should be able to color balance the
>camera
>> to a ordinary outdoor flood light. Color Temperature is about 3000K. Or
>> maybe use one or moreof those new halogen Work Lights.
>>
>> --
>> CSM1
>> http://www.carlmcmillan.com
>> --
>>
>

Archived from groups: alt.comp.periphs.dcameras (More info?)

In message <IVvQc.638$lR6.323@newssvr23.news.prodigy.com>,
"CSM1" <nomoremail@nomail.com> wrote:

>I don't think that the "Daylight" fluorescents are FULL spectrum.

The ones I've used (daylight incandescent replacements) are slightly
greenish-blue overall, and looking at them with my prism glasses through
a pinhole, they contain a mixture of short continuous spectrums, and
single frequencies.
--

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John P Sheehy <JPS@no.komm>
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