Analyzing the results of the guide number test


show more Analyzing the results of the guide number test provides you with in-depth training on Photography. Taught by Brent Winebrenner as part of the Lighting for Photographers: Flash Exposure Fundamentals show less
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Analyzing the results of the guide number test

So we just finished shooting our guide number test. I took a series of portraits of Gabby bracketing the aperture, and now we're going to see how to use those images to establish what are guide number is. So let's get straight into that. So here are the images that we just took for the guide number test, and you can see that the bracketing worked. We went from f/22 all the way down to 5.6. Clearly, the first five or six of these are underexposed, and the last three or four are overexposed. So just by eyeballing it, I can tell.

I'm going to open up this image, the one taken at f/11. I'm going to open up the one at 10, at 9, and at f/8. So let's just take a look at these guys, and we're going to do that in the Raw processor. So what I'm looking for is to see which exposure holds detail in the white shirt and gives me values of roughly 245 in the brightest spot, because then I can work with that exposure to really give me a good tight exposure.

Here you can see I'll be l...

Analyzing the results of the guide number test
Video duration: 4m 4s 1h 27m Advanced

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Analyzing the results of the guide number test provides you with in-depth training on Photography. Taught by Brent Winebrenner as part of the Lighting for Photographers: Flash Exposure Fundamentals

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Photography
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