Hi
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Originally Posted by Kevo My brother was round last night with my old Pan SD20 and the AWB on that was MUCH better than the TM300. It looked much more natural with no cyan cast.
My brother is no 'video expert' and he noticed the 'cyan cast' on my footage straight away but noticed that in parts it did fluctuate as the AWB was 'hunting for a white ref fix'.
I think the overall problem is the 'colour balance' rather from the 'white balance' ref which I would of thought could be easily fixed in the firmware by adding in more red.
In editing I've tried this with some great AVCHD professional software i'm trialling at the moment called Eidus Pro Booster 2 by Canopus where if you add in touch more red then the colour looks much more natural. You can even do a split screen comparison where you can clearly see an overcast sky cyan on one half and grey in the other.
In this software (and I've tried several) no amount of WB adjustment had ANY affect on the cyan cast, it' all in the COLOR BALANCE CORRECTION. But we shouldn't have to do this everytime but it proves it can be easily fixed but at a price. This particular software is £179 but it's by Canopus so you can expect a quality product. I must have tried all the AVCHD editing progs and this so far is the best of all of them.
One other thing I noticed when comparing footage particularly shot in sunshine between my TM300 and my old SD20 is that you can really notice the PQ difference with the three chips (sensors?) on the TM300 which is MUCH sharper and dynamic. |
You are quite correct that it does seem more like a colour balance issue rather a white balance problem, white balance tends to compensate for colour temperature, so shots become two red or two blue (warm or cold) if that is incorrect.
On shots of affected green cast stills put up here it is easy to see (and measure using a colour picker) that what should be white or grey has two little red with both green and blue being equal values.
I haven't seen this at all on my TM300, so it is probably a batch that have been calibrated incorrectly and perhaps as some TM700s have this issue, perhaps there is a bad machine automatic calibration machine in the factory.
When I take stills of shots even with auto-white balance and check areas I know should be white or grey using a colour picker, it is usually spot on, and if off is randomly bias to one colour or the other and then only by a small amount and goes unnoticed.
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I do not agree, there would appear to have been an issue with the TM300 and there certainly is with my TM700 despite using manual white balance. There are a lot of things to like about the camera but it is flawed. I also have a GH1 and a Canon 7D and each have their own strong and weak points, the TM700 has a color weakness.
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There have been several technical reviews of these cameras where the colour accuracy is measured and shown to be one of the best in their class. The complaints of a green colour cast are few given the overall amount probably sold and I certainly have seen no evidence of this colour cast on my TM300. It really seems to be a small percentage have this problem for one reason or other.
Regards
Phil