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Is there a way to change the gamma values of a monitor?
We are using an LCD TV as an external monitor to the camera. And when we transfer the footage to PC, PC LCD monitor obviously shows the image darker than what we have shot. Secondly Premiere Overlay Screeen shows the image even darker.(Premiere rendered output I guess has same brightness with PC Monitor)Somebody replied different monitors have different gamma values, this is the reason.
What I want to do is to adjust the PC monitor + Premiere editing environment in such a way that the brightness will be same as what I see on camera`s lcd and on external monitor(without changing the brightness of the video files, because final output will be back to TV or camera). Is there a way to do this? (I do not mean changing the gamma values of videos on Premiere timeline, I know how to do that, but the Pemiere Overlay Window + also the PC monitor in general during editing duration)
Briefly, how can view my captured video files` brightness in the computer very close to my shooting conditions and environment.
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1 Reply
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In short you can’t.
The only way to monitor the correct output as a reference is with an external CRT monitor designed for the purpose and ideally a waveform monitor too. This monitor should also be correctly calibrated.
The overlay in Premier is being created by your graphics cards, some of which allow you to adjust settings for gamma/contrast/brightness.
An LCD display is the worst possible way to assess your video. All tv cameras are calibrated to produce an image with the reverse gamma of a standard TV receiver. That is, a normal CRT TV’s brightness and contrast aren’t linear between black and white. This is the nature of the tube itself. The camera is set up to compensate for this by producing an opposite (reverse) gamma to cancel out the effect of the TV tube.
LCD monitors are linear devices by their very nature as the backlight is permanently at full brightness and the LCD cells are adjusted to block out or pass through this light. The display processor can compensate for this effect and tries to match that of a CRT but they are largely very poor.
You can calibrate your LCD monitor on the PC using colour matching software and hardware sensors but these are largely designed for print processes rather than TV.
A correctly setup portable TV is the cheapest option but to do it properly requires a TV monitor designed for the purpose.
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