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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 16 Mar 2007 (Friday) 18:38
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DIY Light Modifier Comparison

 
takurpic
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Mar 16, 2007 18:38 |  #1

Hi Folks,

I posted this on FM and thought I'd share here too...

It was kinda slow today so I decided to compare my D.I.Y. light modifiers. It wasn't exaclty a formal test, but it shows the difference. Distance to subject was appx 5 feet.

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Flash (580EX) was mounted on camera and rotated 90 degrees to facilitate fast changes from horizontal to vertical orientation, except for the mini softbox which was held off to camera left and slightly above the subject.

Always Learning! ;)
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Curtis ­ N
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Mar 17, 2007 08:39 |  #2

Nice comparison, Jason. Was the camera horizontal or vertical for these shots?


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takurpic
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Mar 17, 2007 08:46 |  #3

Hi Curtis,

The samples were shot vertically.


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takurpic
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Mar 17, 2007 10:59 |  #4

Others have asked so I thought I'd add it here...

The source for the diffusers needed to make the Hemi-sphere:

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This lamp has three of the diffusers. It an be found at Home Depot for $20.

Modify the hole in the diffuser so it fits on the flash head. Make the hole a bit larger and add velcro to the flash head. The friction will hold the diffuser in place.

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I use a dremmel tool with a caribde cutting wheel to make the rough cut then fine tune with a utility knife. I think you could get it done with a heavier utility knife if you don't have a dremmel.

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fuel123
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Mar 17, 2007 14:12 |  #5

Great idea very helpful thanks alot for doing this - can you tell me where I can find the diy for the mini softbox by jason ryman? I have looked every where, no luck, thanks in advance for any help


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takurpic
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Mar 17, 2007 14:37 |  #6

fuel123 wrote in post #2886842 (external link)
Great idea very helpful thanks alot for doing this - can you tell me where I can find the diy for the mini softbox by jason ryman? I have looked every where, no luck, thanks in advance for any help

That's because I haven't posted it anywhere :lol:

It's made from foamcore, held together with hot glue and reinforced with packing tape. The inside is lined with aluminum foil, the diffuser is a double layer of white muslin (all materials available at Walmart).

Here's the layout for a larger version, just scale it down to fit your needs...

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I added black gaffer tape to the outside edge so the fabric isn't visible. Here's what it looked like before...
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fuel123
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Mar 17, 2007 14:53 |  #7

Jason

Thanks a lot for the diy instructions - being new to photography and on a very limited budget this helps me out. Have you used this box yet in any portraits or product shots yet?


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takurpic
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Mar 17, 2007 15:08 |  #8

No, I haven't used it on clients- it's not exactly pro looking enough.

I have used it on some toys...

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Here's a shot of my two youngest sons. White foamcore reflector + mini-softbox.
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Curtis ­ N
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Mar 17, 2007 16:36 |  #9

That DIY softbox looks functional, but it also looks like it would interfere with the AF assist light.


"If you're not having fun, your pictures will reflect that." - Joe McNally
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Flash Photography 101 | The EOS Flash Bible  (external link)| Techniques for Better On-Camera Flash (external link) | How to Use Flash Outdoors| Excel-based DOF Calculator (external link)

  
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takurpic
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Mar 17, 2007 16:44 |  #10

Curtis N wrote in post #2887378 (external link)
That DIY softbox looks functional, but it also looks like it would interfere with the AF assist light.

Yes, if you're using the flash unit for the AF. I usually trigger it with a pocket wizard or an ST-E2 which will provide AF assist from the camera.

The mini-softbox wasn't designed for use on camera.


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takurpic
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Mar 18, 2007 22:24 |  #11

Here's a sample image taken outside after dark with no surface for bouncing.

Personally, I don't see much difference other than a slight warming and slightly softer shadow with the Hemi-sphere .

The on-flash diffuser was deployed for the second image. It wasn't used on the first, but the flash was zoomed out to 105mm. I did the test this way because this is how I would normally use each unit.

I did notice the flash took longer to recycle with the HS and the cap charge was much louder, so I think it probably requires more power to get the results with the HS. The Chuck Gardner design would probably be more effecient in the absence of a bounce surface.

There were no modifications to either diffuser.

Distance to subject appx 5 feet.

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Curtis ­ N
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Mar 18, 2007 22:49 |  #12

Nice comparison. I would like to see one with direct flash as well.

The lamp shade device looks like a darned inefficient way to use a flash outdoors.


"If you're not having fun, your pictures will reflect that." - Joe McNally
Chicago area POTN events (external link)
Flash Photography 101 | The EOS Flash Bible  (external link)| Techniques for Better On-Camera Flash (external link) | How to Use Flash Outdoors| Excel-based DOF Calculator (external link)

  
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takurpic
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Mar 18, 2007 22:54 |  #13

Curtis N wrote in post #2893409 (external link)
The lamp shade device looks like a darned inefficient way to use a flash outdoors.

I totally agree. Batteries would be dead in a flash (pun intended) :)


Always Learning! ;)
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DIY Light Modifier Comparison
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