Does anyone know this ?

[J.A.F. Doorhof]

http://www.expodisc.com/

Money scam or really worthfull ?

Greetings,
Frank

[nsxpower]

Its for real. Can also be used to meter and set exposure. Don't have one, never used one, but heard about it.

J.A.F. Doorhof wrote:
http://www.expodisc.com/

Money scam or really worthfull ?

Greetings,
Frank

[Roger_Cavanagh]

It's genuine. Too expensive to try out for a determined AWB user like me. :)

I've seen lots of posts from satisfied users and a small number of "not worth it's".

Regards,

[evilenglishman]

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[Mark Kemp]

Maybe - if you are really picky about the colour balance, but ask yourself -

Am I that unhappy with the colours I get from AWB?

If I bought this thing would I really get it out of the gadget bag more than twice?

Is it really that much better than a bit of pavement or a grey card?

If the colour balance is not as I wish (correct or not) is it that hard to fix?

If you really would use it and need the alleged super accuracy then it might be worth it, but I shan't be rushing to get one, sorry manufacturer!

Also - the first thing I do when I get a pic in the computer is to close up the levels thus messing the balance about anyway! with this thing you wouldn't dare to touch it.

[evilenglishman]

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[robertwgross]

To shoot a white balance target, you want the 18% gray card. A pure white card is fine if you are really sure that it has no color tones at all in it.

Then for exposure tests, sometimes a digital camera operator will want a black target, gray target, and white target.

Well, I have some 2-inch tape that is almost perfect 18% gray. I have some white foam board that is almost pure white. Then I have some solid black gaffer tape.

I took a scrap chunk of white foam board that is about 4x6 inches, and put a black tape stripe on it one way. Then a gray take stripe on it another way. Now I have the three-tone target on that side. The histogram of that target gets me one low spike, one middle spike, and one high spike. I can flip the target over to the white side and shoot it for white balance, or I can use it as a very small reflector or diffuser. It costs me nothing and weighs nothing.

The only trouble is that it has no B&H sticker on it.

---Bob Gross---

[colmeg]

"It costs me nothing and weighs nothing".

When i was in college we all worked for the commercial studios.
If you could not make something from Duct tape and foamcore you did'ent work there!!!

No need to spend big $$$$$!

cmp

[evilenglishman]

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[J.A.F. Doorhof]

Hi,

I'm in no way thinking about buying this, the AWB works perfect and for really important shots I place a small white object in a corner and use C1DSLR to set the white point.

I stumbled across this and thought let's ask.

Greetings,
Frank

[KennyG]

Had my ExpoDisk for ages and wouldn't be without it. Far easier to use than grey/white cards. I always keep the WB shot(s) in the folder with the images for future reference.

I can't remember the last time I used auto anything with my cameras.

[David Lawson]

Good product from really nice people. The guy who invented it worked with a fairly well known landscape photographer called A. Adams. Always use it for studio and important shoots. It does the white piece of paper thing by giving you 18% grey tone exposure and doubles up to make your camera into an incident light meter.

[Littlebike]

How about posting a few detailed pictures of the expodisc things so the curious can get a better look at them.

Or a few shots such as;
-AWB
-Custom White balance using 18% grey or white paper
-Expodisc

It would give us all a chance to see the thing in action, so to speak.

Does it just diffuse the incoming light and spread it evenly across the lense surface?

[J.A.F. Doorhof]

Hi,

Maybe a stupid question, but how about RAW shots ?
As far as I know the RAW shots are not white balanced, you do that in software ?

Greetings,
Frank

[Dans_D60]

J.A.F. Doorhof wrote:
Hi,

Maybe a stupid question, but how about RAW shots ?
As far as I know the RAW shots are not white balanced, you do that in software ?

Greetings,
Frank

It’s true you can set the white balance to whatever you want when processing RAW images. But it’s still very handy to have a “perfect” white point from the actual image as a reference.
Dan
http://www.pettusphoto.com

[evilenglishman]

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[Webster]

evilenglishman wrote:

Raw format does use white balance setting

Yeah, but any decent RAW handling software lets you override the recorded white balance.