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Color temperature with Zeiss Super Speeds


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I am filming a sequence this weekend that is a nighttime exterior/bonfire. We've decided to go with zeiss super speeds for this sequence over the canon 8/64 we've normally been using on set. I found this video online documenting how the lenses perform, and am curious as to why the color temperature of the image changes so drastically when the lens is opened up. Is this normal or is it just a fluke with the lenses in this video?

 

http://www.vimeo.com/10419079

 

Thanks!

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I am filming a sequence this weekend that is a nighttime exterior/bonfire. We've decided to go with zeiss super speeds for this sequence over the canon 8/64 we've normally been using on set. I found this video online documenting how the lenses perform, and am curious as to why the color temperature of the image changes so drastically when the lens is opened up. Is this normal or is it just a fluke with the lenses in this video?

 

http://www.vimeo.com/10419079

 

Thanks!

 

The color temperature doesn't change when the lens is opened up. They do get quite soft wide open, though.

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The color temperature doesn't change when the lens is opened up. They do get quite soft wide open, though.

 

I shot last weekend so wish me luck, but the video i posted shows clearly a change in color temperature between apertures 1.3 and 2. Nothing you can't change in post but I am still curious about it.

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