White Balance Cards

The place for questions about shooting with Blackmagic Cameras.
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bmpcc6k

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White Balance Cards

PostSun May 09, 2021 4:17 am

Which white balance card do you recommend for using with bmpcc cameras. which do you use?
I've read a lot of positive reviews and recommendations regarding https://bhpho.to/3bezCxX your thoughts?
BMPCC6K Pro / Sigma 18-35mm / Sigma 24-105mm / SLR Magic Anamorphot-50 1.33x Anamorphic Adapter
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Tom Roper

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Re: White Balance Cards

PostSun May 09, 2021 6:14 am

bmpcc6k wrote:Which white balance card do you recommend for using with bmpcc cameras. which do you use?
I've read a lot of positive reviews and recommendations regarding https://bhpho.to/3bezCxX your thoughts?


https://www.expodisc.com/collections/al ... podisc-2-0
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JonPais

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Re: White Balance Cards

PostSun May 09, 2021 4:40 pm

bmpcc6k wrote:Which white balance card do you recommend for using with bmpcc cameras. which do you use?
I've read a lot of positive reviews and recommendations regarding https://bhpho.to/3bezCxX your thoughts?

The most accurate is the X-Rite Colorchecker Passport Video. The ExpoDisc and Lastolite are to be avoided.
https://daejeonchronicles.com
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Tom Roper

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Re: White Balance Cards

PostSun May 09, 2021 11:12 pm

I have the Passport too but it is so small you have to move in close and then it gives a different reading with every change in the angle of reflectance. The Expodisc 2.0 is more consistent because it aggregates all the light, plus you don't need the talent to hold it.

The Expodisc 2.0 includes gels that can add warmth if desired, and when it's not in use it's a lens cap that stays on the camera. A lot of people use it wrong because they point it at the subject. Incidence metering is premised on positioning the camera where the model would be, and pointing the lens at where the camera would normally be. Since it is a calibrated 18% transmittance, it's also an exposure tool, hence "expo" disc.
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John Brawley

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Re: White Balance Cards

PostSun May 09, 2021 11:45 pm

I use a grey card that is actually made up of magenta and cyan patches that cancel each other out. So in totality it makes 18% grey, but the visibility of the colour patches alro can reveal a lot about the white point of the light you’re using to illuminate the card. So if it has more magenta or green the amount the patches show or disappear can tell you about the colour of the light you’re using.

Now a warning. This card is SUPER DIFFICULT to order.

Like this website, I DARE you to navigate it and not be driven crazy.

I managed to order a card a few years ago, and I need to replace them, but I can’t bring myself to navigate this website again.

Perhaps some of our German speaking friends could cut to the chase here and do a bulk order for me !

http://fotowand.de/frameset.htm?CHOICE= ... 958eng.htm


Any way I found this to be a pretty cool idea.

JB
John Brawley ACS
Cinematographer
Currently - Los Angeles
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JonPais

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Re: White Balance Cards

PostSun May 09, 2021 11:58 pm

Tom Roper wrote:I have the Passport too but it is so small you have to move in close and then it gives a different reading with every change in the angle of reflectance. The Expodisc 2.0 is more consistent because it aggregates all the light, plus you don't need the talent to hold it.

The Expodisc 2.0 includes gels that can add warmth if desired, and when it's not in use it's a lens cap that stays on the camera. A lot of people use it wrong because they point it at the subject. Incidence metering is premised on positioning the camera where the model would be, and pointing the lens at where the camera would normally be. Since it is a calibrated 18% transmittance, it's also an exposure tool, hence "expo" disc.

Agree with you about needing the talent to hold the card, which is aggravating; and the reading can change depending on the angle. However, Paul Leeming tested a bunch of white balance targets and found the X-Rite to be the most accurate, using a DCS Labs ChromaDuMonde chart as a reference. It is expensive and needs to be replaced every couple years, but hey…

https://www.leeminglutpro.com/whitebalance.html
https://daejeonchronicles.com
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Ellory Yu

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Re: White Balance Cards

PostMon May 10, 2021 12:35 am

I have tested a few cards too and so far the XRite Passport is what I bring with me often.
MSI Raider X99 MB / Intel i7 5280 6 core CPU / 2 x AMD R9 390X 8Gb GPU / 32Gb 3200 RAM / Decklink 4K Mini Monitor / 240Gb SSD OS Drive / 4Tb RAID 0 SSD Cache/Scratch Drive / 24Tb 7200rpm Data Drive / Win 10 Pro 64bit / Resolve 17
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Robert Niessner

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Re: White Balance Cards

PostMon May 10, 2021 6:09 am

John Brawley wrote:I use a grey card that is actually made up of magenta and cyan patches that cancel each other out. So in totality it makes 18% grey, but the visibility of the colour patches alro can reveal a lot about the white point of the light you’re using to illuminate the card. So if it has more magenta or green the amount the patches show or disappear can tell you about the colour of the light you’re using.

Now a warning. This card is SUPER DIFFICULT to order.

Like this website, I DARE you to navigate it and not be driven crazy.

I managed to order a card a few years ago, and I need to replace them, but I can’t bring myself to navigate this website again.

Perhaps some of our German speaking friends could cut to the chase here and do a bulk order for me !

http://fotowand.de/frameset.htm?CHOICE= ... 958eng.htm


Any way I found this to be a pretty cool idea.

JB



Wow, he really made it even harder to order from him than the last time I did (in 2007 or so).
John, what exactly do you need and how many of them?
You can PM me.

BTW, here is the direct link to the order page:
http://fotowand.de/shopset.htm
Saying "Thx for help!" is not a crime.
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Robert Niessner
LAUFBILDkommission
Graz / Austria
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Blackmagic Camera Blog (German):
http://laufbildkommission.wordpress.com

Read the blog in English via Google Translate:
http://tinyurl.com/pjf6a3m

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