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Controlling power output

From: Up and Running with Studio Strobes

Video: Controlling power output

Once you've made your determination about shutter so, I look at this image, and I can see that And, as you see, this shot is a lot more balanced.

Controlling power output

Once you've made your determination about shutter speed and aperture, it's time to actually start tweaking the lights to get the image to look the way that you want. And each of these lights have a power setting and they're going to be putting out at a certain wattage or F-stop. So, one way to do this is simply take a test shot, and look at the image and see if you like it. And then tweak your lights based upon that. So I'm going to simply go in, I'm going to zoom in to Valerie here. so, I look at this image, and I can see that the light coming from the right side is way too bright.

The left sides not bad by comparison for my aperture but I want to start doing some adjustments. So Rich let's turn down the brightness of the octobox and one of the things I want you to take into account is we do have modifiers on some of these lights, actually on all of these lights. Later on we're going to be showing you how each of these modifiers work so you'll be comfortable with them. But for now, just setting up how bright the shot is, and how bright the lights are and just turn up the brightness, or turn down the brightness.

>> I'm at 6.5 >> So you brought it down to 6.5, and it was what before? About >> Ten. >> Ten, that's definitely all the way to the top. We'll take a quick shot here. And, as you see, this shot is a lot more balanced. Her skin is not blown out. I think it might be a hair dark, so let's tweak that up to seven. And we're going to fix a couple of other things. At this point, I also notice that Valerie's blending in to the background, it's a gray background, dark dress, she's fair skinned. Let's go head and turn on the background light and just throw some light onto this grey area which will make it pop a little bit.

And, we'll do a test. So, as you see now, there is a lot more separation between the back wall and Valerie. She pops a lot more. my light's not too bright, but I think I want to move that light a little bit more behind her. So I'm going to have Rich pan it to the left and he might even need to move the diffuser a little bit to the left just to make sure that we don't have that really bright area to the right and too much fall off to the left of the image. Let's do another quick test. So I like this shot a lot better, it works for me.

I'll probably do a little bit of tweaking afterwards, but I think I'm ready to shoot. Now when I'm testing the light, whether I'm working with a model, or I'm working with an executive or a family or even a still life, while I'm tweaking the lights I don't need them to keep posing and smiling, I just want to make sure everything is balanced. So, take the shots, let them sit there relaxed, you want to see how the light reflects off their skin, and once you get things balanced, then you can start working with poses and positioning.

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This video is part of

Image for Up and Running with Studio Strobes
Up and Running with Studio Strobes

62 video lessons · 5117 viewers

Richard Harrington and Abba Shapiro

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  1. 4m 6s
    1. Welcome
      2m 4s
    2. What you should know to get the most from this course
      2m 2s
  2. 6m 26s
    1. Shooting with strobes
      1m 23s
    2. Strobe lighting allows you to shoot with an increased depth of field
    3. Strobe lighting has faster recharge times than flashes
      1m 39s
    4. Strobe lighting is good at freezing action
    5. Strobe lighting offers many modifiers to shape light
      1m 38s
  3. 7m 34s
    1. Continuous lighting is easier for a beginner to understand
      1m 47s
    2. Continuous lighting makes it easier to achieve soft-light looks
      2m 57s
    3. Continuous lighting is useful if mixing video into the shoot
      2m 50s
  4. 20m 47s
    1. Buying piecemeal vs. buying a kit
      2m 29s
    2. Criteria for selecting lights
      5m 57s
    3. How many lights do you need?
      3m 0s
    4. How much power do you need
      5m 37s
    5. Mixing brands
      3m 44s
  5. 16m 40s
    1. Monolights and flash heads
      2m 22s
    2. Reflectors and diffusers
      3m 54s
    3. Lighting stands and booms
      3m 49s
    4. Power pack or power supplies
      4m 29s
    5. Sync cable
      2m 6s
  6. 19m 7s
    1. Handling the lamp or bulb
      2m 52s
    2. The role of the modeling light
      4m 36s
    3. Keeping lights cool
      1m 46s
    4. The master and slave relationship for lighting
      4m 5s
    5. Essential controls
      5m 48s
  7. 14m 59s
    1. Connecting the sync cable
      3m 16s
    2. Using a wireless transmitter
      7m 7s
    3. Slaving with a speedlight
      4m 36s
  8. 34m 6s
    1. Setting shutter sync speed
      4m 56s
    2. Setting an initial aperture and ISO
      2m 28s
    3. Controlling power output
      3m 1s
    4. Moving lights (the inverse-square rule)
      2m 8s
    5. Using a light meter in camera
      4m 4s
    6. Using an external light meter
      1m 45s
    7. Test shooting with one light at a time
      2m 5s
    8. Putting it all together
      1m 39s
    9. Controlling exposure with power or aperture
      1m 6s
    10. Refining exposure with ISO
      1m 39s
    11. Tethering to a laptop
      5m 22s
    12. Checking the shots on a computer
      3m 53s
  9. 31m 38s
    1. Modifying strobe lights
      1m 9s
    2. Bouncing the light with a reflector
      4m 26s
    3. Bouncing the light with a bounce card
      1m 12s
    4. Shaping the light with a beauty dish
      3m 5s
    5. Diffusing the light with an umbrella
      5m 50s
    6. Diffusing the light with a softbox
      4m 49s
    7. Focusing the light with a snoot
      6m 58s
    8. Modeling the light with grids and honeycombs
      2m 2s
    9. Using flags to restrict the light
      2m 7s
  10. 14m 50s
    1. Three-light setup
      6m 52s
    2. Three-light dramatic portrait
      4m 59s
    3. Four-light setup
      2m 59s
  11. 46m 56s
    1. Take the challenge
    2. Solution
    3. Portrait challenge 1
      8m 6s
    4. Portrait challenge 2
      3m 10s
    5. Portrait challenge 3
      12m 55s
    6. Portrait challenge 4
      3m 19s
    7. Portrait challenge 5
      4m 28s
    8. Portrait challenge 6
      9m 5s
    9. Portrait challenge 7
      4m 29s
  12. 39s
    1. Next steps

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