Omni-Bounce

k1026143

k1026143

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Lenora
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for the Nikon SB-400 Flash.
Ok i got this for christmas & it's making green eye's on the dog's Why?? When i just bounce it i never get green eye's. :shrug:
 
I would think its like red eye onm people, its the light reflecting off the back of the eye.

when you bounce the light comes from more directions/gives the eye time to adjust, so it doesnt give you the reflection from the back of the eye.
 
How are you using it? Omni-bounce only works if you shoot inside and point it at the ceiling - it needs a bounce surface to reflect off.
 
HoppyUK said:
How are you using it? Omni-bounce only works if you shoot inside and point it at the ceiling - it needs a bounce surface to reflect off.
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Really, I didn't know that. So what's the point in using one if we need to bounce it off the ceiling? Couldn't we just bounce the flash directly of the ceiling then? :thinking:

I always that it was an alternative when you didn't have a ceiling lying around.
 
k1026143 said:
I tried it in every direction & there eye's come out Green. :shrug:
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Did you bounce the flash with the Omnibounce on? Or was it directed at your subject?

If it was directed at the subject, that's probably your answer. The green effect is the animal equivalent of red eye in humans. It's green because of the different colouring of the retina.

I would think any light pointing directly on an animal has a chance of producing this effect.
 
k1026143 said:
I bounced it towards the ceiling with the omni.
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That's how to use an omni-bounce, Stofen and similar. But if the ceiling is too high, it won't do much. To get softer light you need to make the light source much bigger, ie the size of the ceiling and that then becomes the main light source. The diffuser also sends light foward directly to the subject to add fill-in and brighten faces, with a sparkle in the eyes. Looks v good.

In the right situation, these little diffusers work superbly. In an average room, the diffuser spreads light everywhere, mainly in the direction you point it. The amount of light that is reflected back off the ceiling and walls obviously depends on the environment while the light that goes directly forward is constant, so the ratio of direct-to-fill varies.

To get an idea of how it works, shoot a portrait indoors in a small room with a light ceiling and walls. Then move outside, after dark, and shoot an identical pic. The indoors shot will be softly lit, and the flash will pretty much fill the room, wheras the outdoor shot will look eactly as if you had just used direct flash - because the size of the light source is not increased with an omini-bounce/Stofen, and all it does is waste light and power.

This is the bounce/fill-in reflector I like - Lumiquest Quik-Bounce £39 http://www.warehouseexpress.com/buy-lumiquest-quik-bounce/p1031217 It does everything pretty well - open the flaps for a similar effect to the omni-bounce, close them when there's no suitable ceiling and the bigger light area makes a useful difference at close range. It also works in portrait mode, which many flash diffusers do not.

Also have a look here www.abetterbouncecard.com How to use a simple bounce card which works on the same principle as the omni-bounce/Stofen. Many flash guns have one of these little pull-out cards built in, and they're amazingly effective.

Slipper-one said:
As odd as this may seem try a gobo on the front of the omni to reduce the direct forward light. At the mo it's still a bit like car headlights ....:nuts:
Try this requires an old mouse mat:lol: http://www.planetneil.com/tangents/2009/11/21/the-black-foamie-thing/
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Amazing how an attractive girl and a colourful background can make a rather poor lighting example look good ;)
 
its not a green eyed dog is it ? :D
 
HoppyUK said:
How are you using it? Omni-bounce only works if you shoot inside and point it at the ceiling - it needs a bounce surface to reflect off.
Click to expand...

You'd be amazed how many people don't know this :D

I once saw an ex-mate of mine shooting outside in full Sun with one on, I pleasantly pointed out that all he was doing was wasting batteries only to be impolitely told to 'Sod Off' as he knew what he was doing :suspect:

DD
 
stan the man said:
didn't know you had to bounce the omni-bounce off the ceiling for it to work as it should :bonk:
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Well, it depends what you're shooting and the location of the light. The SB-400 only works on the hot-shoe right? It doesn't support any of the remote CLS remote features to take it off the camera (without using one of the SC-xx cables of course)?

That would generally be the problem. Any light coming from so close to the axis of the lens is going to reflect straight back into the lens (which is why bouncing it off a wall and using the gobo works, but not without a gobo). The only other real solution is to take the flash off the camera somehow and point it from an angle that doesn't reflect straight back into the lens.

Generally for dogs I'm using a softboxed SB-900 either overhead or from the side, with another SB-900 bounced off a reflector for fill using either the built-in flash or a third SB-900 as a commander.
 
Well, the "bounce" in "omni-bounce" doesn't mean you HAVE to bounce it, just that due to the nature of it diffusing the light and spreading it everywhere, it DOES bounce.

It's really no different than using the diffuser that comes supplied by Nikon with the SB-900 (or 800).
 
Kaouthia said:
Well, the "bounce" in "omni-bounce" doesn't mean you HAVE to bounce it, just that due to the nature of it diffusing the light and spreading it everywhere, it DOES bounce.

It's really no different than using the diffuser that comes supplied by Nikon with the SB-900 (or 800).
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ya mean the wide angle diffuser for lenses wider than 24mm? thats of no relevance to this. The stofen is designed to throw some light forwards as well as the ceiling and other directions
 
david1701 said:
The stofen is designed to throw some light forwards as well as the ceiling and other directions
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I'm sorry, is that not the very definition of a wide angle diffuser? throwing some light forwards as well as at the ceiling and other directions? :)
 
Kaouthia said:
I'm sorry, is that not the very definition of a wide angle diffuser? throwing some light forwards as well as at the ceiling and other directions? :)
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no cos all the light from a wide angle diffuser has a forward component some light comes out of a sofen @ 90degrees

whereas a wide angle diffuser only does like 45 degrees tops (I made that number up to illustrate the point)
 
david1701 said:
no cos all the light from a wide angle diffuser has a forward component some light comes out of a sofen @ 90degrees

whereas a wide angle diffuser only does like 45 degrees tops (I made that number up to illustrate the point)
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So you're relying on comparing made up numbers to prove a fact? Sounds interesting, does it work often? :)

Stofen said:
The Omni-Bounce creates a Diffused Bare Bulb Effect. Giving even coverage across the entire frame, with lenses from 15mm to 200mm in the 35mm format
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Hey, that's exactly what the SW-13H does that came with my SB-900! :)

They're no different.
 
Kaouthia said:
So you're relying on comparing made up numbers to prove a fact? Sounds interesting, does it work often? :)


Hey, that's exactly what the SW-13H does that came with my SB-900! :)

They're no different.
Click to expand...

I think David's mixing up the stofen-type diffuser that's supplied with the SB-800/900 with the flip-down wide angle one that's built into the flash.

He's a Canon shooter you see :naughty:
 
Kaouthia said:
So you're relying on comparing made up numbers to prove a fact? Sounds interesting, does it work often? :)
Click to expand...

I used it to illustrate, to help explain as text is a poor way to get across what I mean.
If I had a flashgun/camera here I'd try it with the diffuser and stofen and show the difference.

a stofen gets you to almost a bare bulb effect where light spreads evenly around but with a bias forwards, whereas a wide angle diffuser throws it all forwards spread out over an angle to cover 17mm FF




btw I think in numbers a lot as its what I do :D
 
Flash In The Pan said:
I think David's mixing up the stofen-type diffuser that's supplied with the SB-800/900 with the flip-down wide angle one that's built into the flash.

He's a Canon shooter you see :naughty:
Click to expand...

you have them with flashes ?


LOL we were thinking along same lines, by wide angle diffuser I thought you meant the flippy sort
 
port+wine.jpg
 
david1701 said:
If I had a flashgun/camera here I'd try it with the diffuser and stofen and show the difference.
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I hope you're happy, you made me use my popup flash to light a scene!!! :P

Just to end any confusion, the diffuser I'm talking about is the SW-13H that you can see attached to the SB-900 on the left, or laying in front of the SB-900 in the middle. :)

flashdiffusercomparison.jpg
 
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