Frage von arm_inarm:
Dear People,
Finally, we had a rotation with ne old SonyDigiBeta. Tlw. Since I wanted to use a polarizer, but only 85 (Orange)-Polfilter had on hand, I have, every time I had set before him, a White Balance hindurchgemacht by him, under the assumption, then a neutral Picture to film.
Now it seems so often to do it went wrong (I have the material not yet seen, but the director is sitting on it) and the pictures with the orange Polfilter probably all have become.
White someone what's wrong, the chip has to hire polgefiltertetem light difficulties with a correct comparison to make?
Thanks for any help and information!
Many greetings,
Armin
Antwort von Bernd E.:
Can it be that the color - depending on the setting of the filter - is a final variable? If you have the white balance in a recording and the other filters in a position to make, such color could arise.
Gruß Bernd E.
Antwort von WoWu:
Hello Armin ...
..... this has little with the polarization to be done ....
You searched with the filter the entire Farbbablance camera moved in space.
The camera is actually quite "stupid" and simply takes the brightest point of the image as "white" to .... and now begins with the correction of the RGB shares to adjust it there, where she knows suspected, but the normal position of the color space ahead ....
So could not work .... no preference whether polarizer or not. The color of the filter makes it.
Antwort von arm_inarm:
Hello Wolfgang,
thanks for the reply. What you've described is my opinion on an automatic white balance in any video?
I have, however, a white balance through the filter to a white paper made it quite ordinary. The white sheet is determined by the filter and the orange of course, should compensate the white balance, a Falschabgelich so to speak. This has previously with other non-colored surfaces Polfilfiltern or synonymous already working, this probably just seems not so correct. I can not synonymous but me explain.
VG,
Armin
Antwort von robbie:
Wolfgang hats already described above. It relates closely to the White Balance, each with a large camera makes ... How to make it right, there surely be found somewhere else ...
The filter has shifted the entire color space, but so strong that as the White Balance can achieve nothing more.
With an orange filter in front of the lens you are between 3.200K and 6.200K probably synonymous no difference can see.
And now let's be honest ... If I just an orange polarizer have on hand, DA is omitted then surely that's better on the polarizer ...
Ok, done is done, because Kamma nix change now ... for the next time you are smarter ... The cutter can now eh just try something of a halfway normal rausbekommen Picture, but I think not really go. It can then only the material that you've rotated without polarizer synonymous make orange. Then you stop a continuous look orange ... Miami Style ....
Antwort von arm_inarm:
Then again, I must now ask: The polarizer was a 85 (correction) filter. Ie it converts daylight of approximately 5600K down on artificial lighting level of about 3200K. Since I am so synonymous with a rotation with a reasonable fluorescent White balance can be synonymous but here the work?
Honestly, I wonder, however, especially if I was in the internal camera filters a reasonable position chosen. As far as I know is the internal preset to 3200K, and there is ever an internal filter, I think, 4300K and 6500K. It may be that I have a blue filter on it and had the white balance with the combination of 85 and blue filter is not came to the edge?
VG,
Armin
Antwort von robbie:
Ok, so a correction filter ;)... good that we now have time to clarify ...
Regarding internal filters ... I do not know what camera did you use ... On the front top left is a wheel for ND - filter and internal filter ... that is so intertwined steckend arranged ... Do you have a ND - uses? (nona outdoors) ... may be that because you have the internal Farbkorrekturfilter have used?
PRST 3200 is in normal circumstances, yes. But you can adjust internal ...
If you have any event outdoors in sunshine films, the 85 reingibst, then you sometimes with the PRST quite well by ... but depends on the day after ...
Yes, as I said, now in retrospect is difficult because what to say everything would be conjecture. Maybe it was synonymous to the WB PRST 5600 and you have carried forward a manual, then the course would have zero effect ghabt ...
Antwort von WoWu:
Hello Armin ...
.. I can not quite tell if you now as a pure orange filter had searched or just an offset (correction filter) because if it really was an orange filter, you can forget all experiments, because the color is not only shifted but with in all likelihood synonymous way. Since then synonymous not help against more filters.
When we used to sound always said "I'll fix it in the mix" ... Picture when it works sometimes not.
When an offset filter, you could possibly correct ... but when the cutter (s) has already said, they do not get the orange out, then I really type on a spread.
But, as Robby said ... I would then prefer the polarizer synonymous omitted.
Antwort von markus_z:
Hello.
I think that the problem was that it is not a cirkular polfilter gahandelt has.
the cameras with 3 chips have beam splitter due to the problems with polarized light. it may be that the prism, the light chips for each cut, the light in a very unequal parts disassembled. it may happen that a color appears. there is zikulare polfilter to buy, according to the polarization effect of the desired effect and the light "back out" again convert unpolarized light, so it is used in video cameras. at einchipkameras and in film cameras, this effect my knowledge not available.
in a clever postproduktion should be a color but can be largely eliminated. covered not too much has been postponed ...
but for next time.
markus
Antwort von WoWu:
Hi Marcus ... so yes I think that the color has spread.
Incidentally, I think linear polarizer is not really harmful, the new (Fader) of p + s is based on it. Would such effects be symptomatic, the whole concept would not work.
Antwort von arm_inarm:
Hello again,
fair enough, it was a correction / offset filter, just a classic 85 in combination with polarizer, no orange effect filters. I had the WB setting synonymous not preset, but at A or B, each carried my manual white balance is stored. At a previous demand: I have synonymous tlw. internal ND filter is used. But what I just no longer can exclude is that I think the internal correction filters may not always be 3200K (ie no filter) had tlw. but also perhaps to 4300K or 6200K. De facto, then so are the varying degrees synonymous orange correction filter. Perhaps, the WB internal advancing one double with Orange not cope?
Or is it really so with polarized light a manual WB carried out does not always work?
Thank you for all the contributions!
VG,
Armin
Antwort von markus_z:
hi
The white balance can no longer be synonymous cope. wennn the farbverschiebeung too large. or if the white object is too dark or too small. if he does not succeed, but always flashing the display "short". if it works, but something is moved, the display shows the then not.
markus
Antwort von C.I.W:
I have just a similar problem:
When I have all the videos in which a Graufilter it was a slight Rotstich. Is this normal? I've always synonymous WB, but that has nothing.
Antwort von masTer23:
Is this normal? No, absolutely not! Strange thing ... Do you have the internal filter of the camera used, or an external? And probably the WB with the filter made? What camera did you use? Even a Digibeta?
Antwort von Axel:
The difference of white balance to an optical filter is that the former in "Daylight" short wavelengths (bluish)
tuned, while the filter they
rausfiltert. A white balance by color - with the distinction and
correction effect is only gradually - should be a color result.
A White Balance without ND filter covers a higher spectrum s.Luma
and s.Chroma with, because the color is the ratio of the two. If you want to switch to the ND (or screwed a Graufilter before), we see that this in fact can not be neutral, since it by cutting the brightness synonymous color wegfiltert.
A White Balance on a red card produces no blue sunset, just a slack Picture (there are no short wavelengths in the spectrum). A blue color filter on the other hand, only the colors (white) blue sun, the orange horizon, on the other hand black.
Antwort von C.I.W:
I have a 2 times of polarizer Cokin davorgesteckt. The Camera is ne of Panasonic 3CCD MiniDV, so no Digibetta.
Strangely, the only Picture s.manchen bodies so rotstichig.
Antwort von WoWu:
... Picture is sharp because s.den bodies, s.denen the Rotstich is?
Antwort von C.I.W:
What do you mean with sharp?
Antwort von WoWu:
... I try to differentiate whether it is the lime or something else ... with sharp, I think the Picture s.den bodies staining the same sharp picture as in the rest and has chroma s.den bodies cover? So are the colors on each other (RGB)?
Antwort von WoWu:
... oh, I see it now, because my keyboard once the interrupt is not getting ... clearly, this should mean sharp ....
Antwort von C.I.W:
The images are all sharp, no preference whether with or without Rotstich!
