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White Balance

19 Jul 2004 11:32AM
Has anyone heard of or better still experience of 'ExpoDisc White Balance and Exposure Filter' available on eBay for 58.71.

Does this sounds too good to be true.

The seller states;
'ExpoDiscs are multi-element filters that friction-fit into the front of your camera lens to provide you with the ideal tool to achieve White Balance on the First Proof, without the problems caused by gray or white cards. They are faster, easier and more consistent than all other options.'

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19 Jul 2004 2:08PM
Carabosse Plus
14 41.0k 269 England
19 Jul 2004 2:44PM
Sounds like a rip off. A white handkerchief does me fine! Lol!!
19 Jul 2004 3:02PM
I'm still on a steep learning curve here, are you saying that you use a known white object in a reference shot and use this for all other shots under those specific lighting conditions or are you placing the handkerchief over the lens to create a custom white balance?

Or am I totaly barking up the wrong tree?

19 Jul 2004 4:39PM
Yeah, you can do that. Anything that is either a true white or has a mid-tone grey. I bought a Gretag mini color chart for such purposes. For me that would only be occasional but its simple to just put it in shot, take a frame then carry on. Once back at base you can click on the white (or grey) patch to establish your white balance, which can then be applied to other shots taken in those lighting conditions.

As for the ExpoDisc, I've heard of this. There used to be a similar item for puting over your lens in order to use the camera's meter to take incident light readings. I guess this is much the same. IIRC, using a white aerosol top or plastic beaker thingy can be as effective.
19 Jul 2004 4:50PM
Cheers Tim,
just to clarify, IIRC,- what does this mean?
using a white aerosol top or plastic beaker thingy can be as effective again are we talking of placing this over the lens and if so, is this to create a custom white balance within the camera setup?
19 Jul 2004 5:01PM
IIRC - If I Recall Correctly.

That's right. Place over the lens front. To use it for an incident reading, point the camera towards the light source and take a meter reading. Set that on the camera in manual.

For the ExpoDisc, read about it here, which is what I am going to do now!
19 Jul 2004 5:05PM
Thanks again Tim.
User_Removed 15 7.3k 6 United Kingdom
19 Jul 2004 5:06PM
I understand that the top from a 'tube' of Pringles works just as well!
19 Jul 2004 5:11PM
Thanks Barrie, any idea how much they go for on eBay, there must be someone selling them on there. LOL!
19 Jul 2004 5:18PM
top from a 'tube' of Pringles

Shame those only come in one "filter size", eh! Wink

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