new preset white balance on HM750 at DVinfo.net

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Old April 7th, 2011, 09:36 AM   #1
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Join Date: May 2005
Location: Windsor, ON Canada
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new preset white balance on HM750

I was on a shoot last week with a 700 and a 750.
The lighting was a mixture of indoor and outdoor and the auto white on the 750 didn't do what I wanted.
I went into the menu to see what I could adjust and discovered that the preset temps have been (greatly) expanded from 3200 & 5600 to 2800, 3200, 3400, 4200, 4800, 5200, 5600, 6500 and 7500.
I dialed it back from the 5400 that auto white said it was to 4800 preset and it looked perfect!!
I really hope JVC offers this as a firmware update for the 700 series of camera.
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Old April 7th, 2011, 02:11 PM   #2
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Re: new preset white balance on HM750

Yes, that would be wonderful. Sometimes I'd like to adjust the white balance to something off from pure "white" from a white card, to achieve a color balance effect, rather than adjusting it in post. A friend of mine has a novel solution, an iPhone app which lets you paint the screen to any specified solid color, so you can pick a color on one "side" or another of "white" to fool the camera's white balance reading into getting the result you want.

But it would be much easier to pick a preset or (even better) enter in a specific temperature and view the result on an accurate monitor to be sure it's what you want.
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Old April 7th, 2011, 03:08 PM   #3
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Re: new preset white balance on HM750

It should be a firmware-upgrade, a really better solution is to put the Kelvin directly with up/down-button.

But I don`t think so, JVC want to sell the new one`s and not the former from the same series.
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Old April 7th, 2011, 03:35 PM   #4
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Re: new preset white balance on HM750

With the introduction of the 750, the 700 is now obsolete so you have no choice unless your dealer still has some in stock.
My dealer told me that the 750 I just got today was shipped out of Japan the day before the earthquake hit otherwise I'd be looking at a very long wait for it.

Bob, WarmCards are an alternative to that iPhone app.
They're $75 at B&H so if you don't know anyone with an iPhone, they are an option.
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Old April 30th, 2011, 07:04 AM   #5
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Re: new preset white balance on HM750

What iPhone app are you referring to? could you give its name, please? Thanks.
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Old May 3rd, 2011, 07:47 PM   #6
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Re: new preset white balance on HM750

Possibly this one?

GrayCard

I thought of doing something similar with my old HP iPAQ a few years back, but figured it wouldnt be that accurate because the screen is a reflective surface and proper grey cards are supposed to be non-reflective. Also, how does one ensure that the screen is accurately calibrated?

As the product info states " Please note, due to the physics of transmissive versus reflective light, GrayCard should only be used as a back up method for setting white balance. A physical gray card is still preferable in most cases"

As for their other product - 'LightSource' - is the iPhone/iPod display really bright enough to make that worthwhile?

Last edited by Bryan Worsley; May 3rd, 2011 at 08:25 PM.
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Old May 4th, 2011, 09:48 AM   #7
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Re: new preset white balance on HM750

I use one of these... Plain outright the best way to white balance...

http://www.expoimaging.com/product-o...w.php?cat_id=1

Steve
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