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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 24 Feb 2007 (Saturday) 15:54
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Another DIY light box, with build and test pics

 
pepperoni
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Mar 08, 2007 00:07 |  #181

cowboylife wrote in post #2834971 (external link)
What about a solid black sheet doubled up? Wonder if that would produce a "blacker" black than the paper??

Perhaps. Problem for me was, I couldn't find exactally what I was looking for tonight. They were out of their usual stuff so I settled on poster paper. It's sorta thick (like heavy construction paper), and it unfortunately has a lot of gray fleck in it.

I think another key would be having a significant gap between the subject & background. That way the subject is lit, but the background isn't. A box wouldn't be ideal for this.


Mamiya. Canon. Elinchrom.

  
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Laramie
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Mar 08, 2007 00:13 |  #182

pepperoni wrote in post #2835065 (external link)
Perhaps. Problem for me was, I couldn't find exactally what I was looking for tonight. They were out of their usual stuff so I settled on poster paper. It's sorta thick (like heavy construction paper), and it unfortunately has a lot of gray fleck in it.

I think another key would be having a significant gap between the subject & background. That way the subject is lit, but the background isn't. A box wouldn't be ideal for this.

How far of a gap are you thinking?


5DIII | 40D | 17-40 f4L | Tamron 28-75 2.8 | 50 1.4 | 70-200 2.8L | Oly Zuiko 50 macro | Tamron 1.4x

  
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pepperoni
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Mar 08, 2007 00:20 as a reply to  @ Laramie's post |  #183

Couple feet. I'm thinking on a bigger scale like a black sheet on the wall behind with diffused light on the subject.


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T0DD
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Mar 08, 2007 00:24 as a reply to  @ post 2835042 |  #184

Ultra,

I think the battle of exposure and contrast and making the background white is exactly that... a battle.

I just shoot in raw and adjust exposure, contrast and shadows. Sometimes I do a touch of unsharp mask too. I don't think mine are the best by any means, but I getting happier with how my background is whitening up. Only bummer that I'm noticing is that I think my adjustments are making my glass reflection disappear.

I also noticed with my set up that flashing my 580EX off the roof provides better results than a straight on shot. But your diffuser may fix the issues I was having. I don't know why I try and give any sort of advice, I'm about as brand new as it gets. Hee hee. :D

Here's my latest that I took tonight. I actually took a few, but this is the only one I've PP'd so far.

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"I'm a procrastinator, but I'll tell you about that some other time"
40D, 30D, XTI, XT - Kit Lens,17-85 IS,24-70 2.8 L, 70-200m F4 L, [COLOR=red][COLOR=#000​000]70-200mm 2.8 L, 300mm F4 L 1.4x II, 580EX

  
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Laramie
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Mar 08, 2007 00:26 |  #185

pepperoni wrote in post #2835122 (external link)
Couple feet. I'm thinking on a bigger scale like a black sheet on the wall behind with diffused light on the subject.

Sounds like it could be exaggerated for the purposes here, just need a bigger box. Would the light be sufficient on each side if you were using say a refridgerator box so you could have the distance you want to be able to use the black sheet?


5DIII | 40D | 17-40 f4L | Tamron 28-75 2.8 | 50 1.4 | 70-200 2.8L | Oly Zuiko 50 macro | Tamron 1.4x

  
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Ultra
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Mar 08, 2007 00:43 as a reply to  @ Laramie's post |  #186

Todd - appreciate the pointers, I'll fool with it some more later in the week and post results.

thanks again


Canon 5Dii+5D :35L 1.4: 70-200L 2.8 IS: 24-105L :Canon 100mm 2.8: 85mm 1.8: Canon 50mm 1.8
www.eYeWonderPhotograp​hy.com (external link)
MM# 413819

  
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T0DD
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Mar 08, 2007 00:43 as a reply to  @ Laramie's post |  #187

I love my light box! :lol:

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"I'm a procrastinator, but I'll tell you about that some other time"
40D, 30D, XTI, XT - Kit Lens,17-85 IS,24-70 2.8 L, 70-200m F4 L, [COLOR=red][COLOR=#000​000]70-200mm 2.8 L, 300mm F4 L 1.4x II, 580EX

  
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T0DD
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Mar 08, 2007 01:39 as a reply to  @ T0DD's post |  #188

Ok, yes... I'm that bored. I figured I'd post what I did step by step in order to get the picture below.

Step 1) Set custom white balance on my 30D: Turn your lights on in your box and get your camera set up as if your going to take a normal picture, I used the fully automatic mode. I turned on my 580EX flash for my white balance photo. Aim it towards the back of your box, put the lens on "manual" (otherwise it won't take a picture) and pull the trigger. ;)

Next, press the menu button on your camera. In the red menu find the "CUSTOM WB" and select it. It will bring up the white picture you just took, if it doesn't scroll through the pictures and select the white picture you just took. It will tell you to set your camera to the 2 little triangles and the box icon thing (That's the custom white balance icon). Change your WB to the "CUSTOM SETTING ICON".

You're now ready to shoot in your light box. Setting the custom white balance is an important step to keep post processing to a minimum.

Step 2) In order to use your custom WB you must select a manual setting... AV, TV, Manual, ETC. I select AV setting and adjust my aperature to F16. I then ensure my 580EX flash is on and my white balance is set to the Custom WB setting. I take my picture.

Step 3) I then upload the picture to my trusty laptop and then open up the RAW image in Photoshop CS2. My first adjustment is to the "Exposure". I increase it until the white looks a "almost" white. Secondly, I increase the "Contrast" to darken up the object and it seems to balance out the adjustment I just made to the exposure. For the picture below, I increased the shadow by 1. Sometimes I'll click on the detail tab and increase the sharpness to 40 or so.

Step 4) I then open it to regular photoshop where I apply a touch of Unsharp Mask. I then create a border and save as a .jpg.

That's it. This might not be helpful to anyone... but I always wonder what others do in order to get the photos to look the way they do.... so I figured I'd at least explain how I do mine, not that it's perfect, but it's just my method.

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"I'm a procrastinator, but I'll tell you about that some other time"
40D, 30D, XTI, XT - Kit Lens,17-85 IS,24-70 2.8 L, 70-200m F4 L, [COLOR=red][COLOR=#000​000]70-200mm 2.8 L, 300mm F4 L 1.4x II, 580EX

  
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baw5t0n
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Mar 08, 2007 02:13 |  #189

T0DD wrote in post #2778351 (external link)
This is so great that I'd hate to be a cardboard box right about now. :)

LOL... totally. I wonder how many exacto knives went flying off the shelves (although I guess you could use a kitchen knife) along with rolls of butcher paper and those halogen lamps... I wonder if Costco has those... :cool:


5D/BG-E4 || 28/1.8, 50/1.4, 85/1.8, 100/2.8 Macro, Sigma 17-35/2.8-4.0, 24-70/2.8L, 70-200/2.8L IS
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baw5t0n
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Mar 08, 2007 02:14 |  #190

where do you put the glass plate? how far back in the box? I love that reflection on the bottom look...


5D/BG-E4 || 28/1.8, 50/1.4, 85/1.8, 100/2.8 Macro, Sigma 17-35/2.8-4.0, 24-70/2.8L, 70-200/2.8L IS
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OKCPhotogrpaher
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Mar 08, 2007 05:18 |  #191

Thank you for sharing, what a great deal.
Dale


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Ultra
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Mar 08, 2007 11:08 |  #192

baw5t0n wrote in post #2835478 (external link)
LOL... totally. I wonder how many exacto knives went flying off the shelves (although I guess you could use a kitchen knife) along with rolls of butcher paper and those halogen lamps... I wonder if Costco has those... :cool:

Costco actually has a decent exacto knife set for $10 that has about 26 pieces by Workman, which of course I cant find on the website... but would be a good item to shoot in my new lightbox :) (tonight)


Canon 5Dii+5D :35L 1.4: 70-200L 2.8 IS: 24-105L :Canon 100mm 2.8: 85mm 1.8: Canon 50mm 1.8
www.eYeWonderPhotograp​hy.com (external link)
MM# 413819

  
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Mar 08, 2007 11:18 as a reply to  @ T0DD's post |  #193

Todd: I like the framing you did on the posts. Is that available on the web or did you make it from scratch?
Tom


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T0DD
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Mar 08, 2007 12:36 |  #194

tomd wrote in post #2837238 (external link)
Todd: I like the framing you did on the posts. Is that available on the web or did you make it from scratch?
Tom

I found it on the web... Here's the direct link. ;) It's simple once you do it 2 or 3 times. Don't say I never did nothing for you. hee hee.

http://www.goingmanual​.com/photo/tutorials.p​hp?tutid=139 (external link)


"I'm a procrastinator, but I'll tell you about that some other time"
40D, 30D, XTI, XT - Kit Lens,17-85 IS,24-70 2.8 L, 70-200m F4 L, [COLOR=red][COLOR=#000​000]70-200mm 2.8 L, 300mm F4 L 1.4x II, 580EX

  
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JoeTokyo
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Mar 08, 2007 13:02 |  #195

i did this a little while ago, but went hte foam core route

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and a picture of my setup

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Canon 400d - Canon 18-55mm f/3.5-f/5.6 - Canon 50mm f/1.8 - Sigma 18-50mm f/2.8 - Sigma 70-200mm f/2.8 - Peleng 8mm f/3.5
Opteka Battery Grip
POTN neck strap

  
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Another DIY light box, with build and test pics
FORUMS General Gear Talk Flash and Studio Lighting 
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