C300: White Balance.... need help

anatusa

anatusa

Veteran
I am a very new c300 owner, and i have problems with the setting the right white balance .... i must be doing something wrong , maybe some one can help me...

i set the balance to A, i put white paper A4 in front of the lens and hold the white balance button, in few sec i get the result...... that i believe is wrong ..... for example today i filmed 1 scene with 2 500w halogen lamps pointed to the white ceiling and the result i got was 2000k..... looked strange...

what i do wrong?

also 1 more thing - i will buy white/grey cards for proper white balance , but what is the right one to use? and/ or when its should be balanced with a use of grey card and when with the white card? are there any other to be used?

with the jobs i do i often have mixed lighting halogens with some room lights..

thanks in advance!
 
Under mixed lighting setting white balance using a white card can be a little wonky, but typically halogen lamps don't run at or near 2000K. Your best bet is to minimize the mixed lighting, and color balance for whatever your main lighting source is and then grade in post.
 
I agree, halogen shouldn't be 2000k. Where are you holding the paper? Is it reflecting the key light source into the lens. Did you expose the white paper correctly?

As to your other question; a grey card is best. If you use white you need to expose it for mid tone (grey) anyway to white balance properly, so that's one less step to do. Grey is just underexposed white. White is just overexposed grey. Also, a grey card will help assess correct exposure using the WFM.
 
I have noticed that the C 300 likes to have the white fill the frame completely, or nearly completely to get accurate WB anything less and you can get some funky whites.
 
Liam Hall said:
I agree, halogen shouldn't be 2000k. Where are you holding the paper? Is it reflecting the key light source into the lens. Did you expose the white paper correctly?

As to your other question; a grey card is best. If you use white you need to expose it for mid tone (grey) anyway to white balance properly, so that's one less step to do. Grey is just underexposed white. White is just overexposed grey. Also, a grey card will help assess correct exposure using the WFM.
Click to expand...

ok seems like i did it wrong. I ll get the grey cart then.....

is there any other ways for white balance?

regards
 
Mark Smith said:
I have noticed that the C 300 likes to have the white fill the frame completely, or nearly completely to get accurate WB anything less and you can get some funky whites.
Click to expand...

Good to know why I never found the C300 WB really accurate. I gave up on it. I dial in the Kelvin now. It's faster to adjust and I don't need to worry about finding something big and white. Most of the time I'm shooting handheld by myself and can't hold a card and hold the camera at the same time.
 
yes, LOG is not the same as raw, where the wb is not baked in.

another way to set white balance, is have open your waveform in RGB mode, dial in the kelvin that lines up all 3 colors. this way you can see if there is a imbalance in colors with your lighting, and you can visually identify which tonals have that imbalance and adjust to your liking.
 
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