THETA Northwest Regional Forum is a message board for models, photographers, agents, managers, and others who live and work in the Northwest.

THETA Northwest Regional Modeling and Photography Forum Archives

To view recent messages or to post a new message, visit the THETA Northwest Regional Forum.

THETA Northwest Forum Archives

Re: Color temp -vs- strobe output

Posted By: Michael and Barbara Jarboe (4.41.209.191)
Date: Wednesday, 23 July 2003, at 2:17 a.m.

In Response To: Color temp -vs- strobe output level (Gabe Choy)

Gabe,
First off, there is a significant difference between shooting film and digital in terms of exposure and coloor balance.
In film it is the emulsion that is set at the factory. And we always needed to experiment and get our lighting and exposure sybched with our labs and their processing so that we got a pleasing result to our eye. There is also a considerable margin for error built into film that just isn't there in digital.

With digital,changing anything with your lighting setup will actually change the white balance point, even if you have set a custom white balance level using a grey card.
Digital is very sensitive to color temperature. Additionally, for flesh tones, there is only a very narrow window of .5 of an f-stop underexposure and .3 of an f-stop overexposure latitude in digital. This "Exposure Window" will definitely be compromised if you change you lighting setup during a shoot.

If we change a light during a shoot with digital, the only way we can get a proper white balance and exposure is to re-check the lights and re-set the complete lighting array.

Shut off the main and remeasure your background lights or fill lights. Shut them off and turn on your key light and remeasure and set it to obtain the lighting ration you want for your setup.
Then redo your white balance custom setup in the camera. It is tedious, but that is the reality of the digital world.
The digital imager in the cameras is highly sensitive to exposure latitude, and color temperature.
Just something we have to constantly be aware of. There just isn't the latitude with digital that there is with film. And, it is not possible to "Fix" an image in photoshop that falls outside the .8 of an f-stop exposure latitude.
The image will never look right to the trained eye.
Those are our thoughts on your question.
Mike and Barbara

Michael Jarboe Photographics

Messages In This Thread

• Color temp -vs- strobe output level
  Gabe Choy (172.194.107.55) -- Wednesday, 23 July 2003, at 1:04 a.m.
  • Link to strobe test
    Gabe Choy (172.194.107.55) -- Wednesday, 23 July 2003, at 1:09 a.m.
    • Well... Sort of...
      Jim Wimmer (12.230.78.211) -- Wednesday, 23 July 2003, at 2:06 a.m.
      • Now you have me wondering
        David Cooke (12.206.106.66) -- Wednesday, 23 July 2003, at 2:15 a.m.
        • Re: Now you have me wondering
          Jim Wimmer (12.230.78.211) -- Wednesday, 23 July 2003, at 2:45 a.m.
      • Re: Well... Sort of...
        Gabe Choy (172.196.237.80) -- Wednesday, 23 July 2003, at 3:40 a.m.
        • Re: Well... Sort of...
          Jim Wimmer (12.230.78.211) -- Thursday, 24 July 2003, at 2:54 a.m.
  • Re: Not an issue for me
    David Cooke (12.206.106.66) -- Wednesday, 23 July 2003, at 1:46 a.m.
  • Re: Color temp -vs- strobe output
    Michael and Barbara Jarboe (4.41.209.191) -- Wednesday, 23 July 2003, at 2:17 a.m.
    • U throw a lot of good info for us, but you missed.
      Gabe Choy (172.196.237.80) -- Wednesday, 23 July 2003, at 3:22 a.m.
      • Re: U throw a lot of good info for us, but you mis
        Michael and Barbara Jarboe (4.41.209.191) -- Wednesday, 23 July 2003, at 11:43 a.m.
        • getting 12% or 15% grey card?????
          Gabe Choy (216.254.59.163) -- Wednesday, 23 July 2003, at 1:07 p.m.
          • Call Pantone and Canon
            Michael and Barbara Jarboe (4.41.209.191) -- Wednesday, 23 July 2003, at 1:47 p.m.
            • "It sounds wierd". not at all, simple basic rule..
              Gabe Choy (216.254.59.163) -- Wednesday, 23 July 2003, at 2:42 p.m.
          • Percent gray doesn't matter for color balance (n)
            Rick Campbell (67.1.38.136) -- Wednesday, 23 July 2003, at 7:00 p.m.
    • You don't have problem with full size sensor.
      Gabe Choy (172.196.237.80) -- Wednesday, 23 July 2003, at 4:08 a.m.
      • Interesting, but...
        Jim Wimmer (12.230.78.211) -- Thursday, 24 July 2003, at 2:42 a.m.

THETA Northwest Forum Archives is maintained by David Blewett with WebBBS 5.12.

©Copyright 1996-2006 THETalentAlliance.Com. All rights reserved.

Site Design by DaBlue