ExpoDisc EXPOD72 72mm ExpoDisc Neutral White Balance Filter

I learned about this device from something Scott Kelby wrote - can't remember where. It really does simplify exposure and white balance settings. Just snap it onto the front of your lens and it acts like an incident light meter. Use the image taken to set white balance. MUCH, MUCH, MUCH easier than a neutral gray card and more accurate. A great investment for anyone who is serious about photography.

This works exactly as claimed and as I thought. I create a custom balance based on the light falling on the subject. It works perfectly. I only use it in areas of mixed or unknown light sources such as varying fluorescent sources. It's a little tricky when using camera-mounted bounce flash but I mainly use it for portraits and architectural images. I've come to depend on this professionally for those occasions when I can't determine the color temperature.

i can't be sure, since the results are so subjective, but I believe that my color balance and the consistency of color balance across shots throughout the day is much better.

It isn't cheap... But it is fast, compact, and the color balance of the resulting images is very good out of the camera. It is worth the cost!

I do a lot of photography and bought this based on all of the positive feedback for an Expo I was going to be taking photos at. It will semi work, but for someone who shoots on manual and knows how to quickly change settings, this is t worth the money. This is really for someone who doesn't know anything about changing settings in their camera and shoots on auto.

I purchased ExpoDisc 72mm. Here is test result, using Photoshop: SETUP: Took a gray frame under incident light source per ExpoDisc instruction, using camera Canon EOS 40D, 28-135mm lens. IMPORT to Canon software "Digital Photo Professional" FOR WHITE BALANCE: Use this gray frame to do white balance itself. A result of a final Gray Frame. IMPORT this final gray frame to Photoshop FOR MEASUREMENT: Using Photoshop Color Sampler Tool. Result finding in 256 color scale (0 - 255): Green & Blue = Mostly about equal. Red = Always about 10 (in 256) value higher than the other two. Example: Green = 112 Blue = 114 Red = 124 I repeated this type of test several more times, result are still much off from scientific theory or way out of range (10 in a range of 256 or 4% error from neutral). Supposely: Red = Green = Blue to call Neutral. So this ExpoDisc is for convienent only. OK for none important picture. Way too high price for a non-precision piece.

Excellent tool for getting the WB right especially in tricky lighting.

I own other expodisc.I have and will recommend it to others. It is a must for me.The time save in doing white balance is great. Why would would anyone not have one

I have a Canon 7D, and was frustrated by a green tint that happened no matter what I tried. Heard good things about the ExpoDisc, and decided to give it a try. Wow! No more weird tint! My SOOC shots are fantastic, and required minimal processing. Tried in full sun, in the shade of mature trees, and in the shade of a building. Colour was spot on every time. You do have to reset every time the light you're in changes, but it's a few seconds, and the time saved in processing makes it worth it. If you want fantastic SOOC, don't hesitate to get one for yourself.

Lo compre y esta bien... pero si sabes un poco de fotografía, la verdad es que no aporta nada. Y si lo que te ocurre es que no tienes ni idea de fotografía, haz las fotos en automático... y no te hará falta este Expodisc. Pero lo cierto es que el balance de blancos lo hace estupendamente bien, que es para lo que esta diseñado.

***** Absolut empfehlenswert! Bin sehr zufrieden und habe seither so gut wie keine Weißabgleichskorrektur mehr in PS vornehmen müssen! Kann ich nur empfehlen, hab ihn immer dabei!

Die ExpoDisc tut was sie soll. Der manuelle Weissabgleich gelingt damit unter nahezu allen Bedingungen. Punktabzug gibt es wegen der Inkompatibilität zu Slim-Filtern, wie z.B. dem Hoya HD UV Filter. Hier können die "Haltenasen" der Disk nicht ausreichend am Filteraussengewinde einrasten und im nu liegt die Disc im Dreck. Den Grund, warum bei diesem ansonsten so genialen Produkt auf ein Schraubgewinde für die spezifische Filtergröße verzichtet wurde, kennt wohl nur der Hersteller.

Before getting the Expo Disc I always had a difficult time trying to correct the white balance for the proper exposure. This device takes the guess work out of it.