BetterPhoto Q&A
Category: New Questions

Photography Question 
Marius Liebenberg
BetterPhoto Member Since: 11/21/2005
 

Speedlite metering method


If I meter with the camera at one stop under and set the Speedlite to one stop over compensation, will the overall shot be exposed at normal, or will the Speedlite let out enough light to over expose/compensate by one stop while the body is still metering at one stop under?


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7/21/2007 3:20:19 AM

 
Christopher A. Vedros
BetterPhoto Member Since: 3/14/2005
  Marius,
The best way to find out is to try it, but I can tell you what I think would happen.

Setting one stop over on your flash will cause your foreground subject to be a little overexposed. Depending on your subject's color, this isn't necessarily a bad thing. Setting the camera for one stop underexposure won't affect this, since the flash duration is much shorter than the shutter speed anyway.

Setting one stop underexposure on the camera will likely cause the background to be underexposed.

The metering mode on your camera will have some affect on this, but I think my logic above is correct.

Chris Vedros


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7/21/2007 8:32:38 AM

 
Mark Feldstein
BetterPhoto Member Since: 3/17/2005
  But of course, muchacho. :>) For real excitement, try setting your camera at 3 stops under and your speedlight at 3 stops over and if you shoot film, pull the film one stop. !!! That'll get you back to one stop under. Ok, now for a train problem. A train leaves Philadelphia at 2:15 PM headed for Miami, while another train leaves Newark at 4:30 PM..... wait a second: Do you need some scratch paper???
Take it (speed)light. ;>)
Mark


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7/21/2007 8:34:59 AM

 
Gregory LaGrange
BetterPhoto Member Since: 11/11/2003
gregorylagrange.org
  But what about the diffracting capabilities of air with a high barometric pressure and changes in the camera exposure making uniform changes to background and foreground, whereas changes in flash light come from the inverse square rule of light dissipation, correlating to distance traveled and particulate matter in the air.


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7/21/2007 11:12:59 AM

 
Christopher A. Vedros
BetterPhoto Member Since: 3/14/2005
  Gregory, I think you've been reading too many Alan Marcus posts. ;-)


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7/21/2007 5:41:13 PM

 
Mark Feldstein
BetterPhoto Member Since: 3/17/2005
  No, I agree with Greg. It's a red rubber ball kinda thing when multiplied times the Marcus relational coefficient. Now...back to our train problem.
M.


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7/21/2007 7:32:11 PM

 
Gregory LaGrange
BetterPhoto Member Since: 11/11/2003
gregorylagrange.org
  Freight or AmWay?


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7/21/2007 7:40:24 PM

 
Robyn Gwilt
BetterPhoto Member Since: 7/15/2005
  ROFLMAO - especially at the 'Marcusian' coefficient. My friend Alan sometimes blows my socks off with his incredibly informative answers, and then I need to RTFM to really understand it all. Marius, WHY do you want to do this, or is it just a curiosity thing? Chris is probably pretty close, but.... if the train is travelling west, and the barometric pressure is heading south, and Alan has put in his twopence worth.... what is the name of the dog?


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7/22/2007 9:28:26 AM

 
Christopher A. Vedros
BetterPhoto Member Since: 3/14/2005
  ".... what is the name of the dog?"

Nipper

What do I win? ;-)


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7/22/2007 9:41:23 AM

 
Mark Feldstein
BetterPhoto Member Since: 3/17/2005
  Well Chris, congratulations !!! Nipper it is, or in winter, "Nippy" or "Little Nippy, depending on how whimsical you feel. You've won first prize!!! {Better sit down for this). A spectacular, all expense-paid one-week trip to the absolutely barren, sandy, overheated, asparagus and plant fertilizer and cardboard box manufacturing capital of the world: LODI, California!!!! That's right, Chris. You'll be staying at the luxurious Holiday Inn Express in their deluxe "Alan Marcus" suite adjacent to the ice machine which, like my uncle Norman, hasn't worked since 1967. You'll thrill at it's spacious lobby and swim in it's solar heated pool, which this week, reached 125 degrees f. (at night).

AND, you'll be experiencing dining at Lodi's famous (and only) restaurant, "The Casa de Lox y Bagel" where you and a guest (from the hotel of course) will share a vinyl covered booth and luxuriously dine on traditional south-of-the-border deli cuisine.

AND for those who guess the second-best answer correctly, second prize is (You may have already guessed this one) is TWO weeks, not just one, in Lodi California.

Wear shorts and leave your American Express card at home since there is absolutely NOTHING to spend money on in Lodi.

M.
=============================
Disclaimer: BP employees, their friends, associates, employers, neighbors, family members and acquaintances together with any additional members visiting from the shallow end of the gene pool were not eligible to enter this contest.

Deli tortilla wraps, such as the cornedbeef, pastrami and swiss, do NOT include salsa or mayo or gratuities.


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7/22/2007 10:37:55 AM

 
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