Conversion negative in positive

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7OSE9
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Conversion negative in positive

Post by 7OSE9 » Sun Aug 21, 2016 6:03 pm

Hello,
on the web I found nothing, or only for photos and not for vidoes: there is a software (or a plug-in for Premiere, I use it. "Invert" option in Premiere make film only in blue tint) that converts scanned negative films, such as Vision 3, in positive?
I know that, usually, use the directly scanner software, but I'm in possession of some files of negative films, scan of Vision 3.
Thank you! :)

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wahiba
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Re: Conversion negative in positive

Post by wahiba » Mon Aug 22, 2016 7:46 pm

I think all video editing software packages have invert as an option. Even those that do not cost anything. For video it creates a negative look but certainly works the other way.
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7OSE9
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Re: Conversion negative in positive

Post by 7OSE9 » Mon Aug 22, 2016 8:51 pm

wahiba wrote:I think all video editing software packages have invert as an option. Even those that do not cost anything. For video it creates a negative look but certainly works the other way.

There is almost always "invert", of course, but, unfortunately, I tried with Premiere, the command "invert" only change from typical "orange" of negative in "bluish", nothing more.
Then we should work with other options, but it is very difficult, can not do it. Possible that there is not an easier way? :((

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Re: Conversion negative in positive

Post by Pj » Mon Aug 22, 2016 9:00 pm

Is it cine film? How are you transferring film? I always use a blue/turquoise filter changing the colour of the light when digitising film so when I use the invert in Premiere I get a better balanced image.
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avortex
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Re: Conversion negative in positive

Post by avortex » Mon Aug 22, 2016 11:45 pm

You need to do a more intensive colour correction than reversal. The "invert" filter is only the starting point.
If you're not very skilled in this area (most of us aren't), is better to let the professionals at the transfer house do it.
Marc

7OSE9
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Re: Conversion negative in positive

Post by 7OSE9 » Sat Aug 27, 2016 7:20 pm

Thank you.
True, after the "invert" command that make bluish tint, it's really hard to juggle with colors. I know you can use RGB Premiere or other editing software options, but not easy.
However, if anyone has any tips for having a minimun result, even a little 'acceptable, without having the excellent results of a professional lab, it's good. :)

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Re: Conversion negative in positive

Post by milesandjules » Wed Aug 31, 2016 2:13 pm

For neg transfers you need to be able to see the invert effect while transferring..... so you can adjust the white balance on the camera to compensate for the orange/blue tint you are getting. If your camera has an invert function you are in luck. If your camera can be connected to a computer. You can invert the screen on a mac by hitting Control-Option-Command-8

on a pc you may be able to play with the graphics card settings and invert it that way....i did this with an nvidia card on a pc once.

or there is the really simple way of doing it with an invert app for your phones camera. This sounds lame but is still better than guessing what the neg will look like inverted back to positive.

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Re: Conversion negative in positive

Post by ncollingwood » Thu Sep 01, 2016 10:19 pm

So if you have a scan of negative film, as said before, you can select invert in Premiere. This will give you a blue-ish video. Now for a relatively quick fix, select "fast color corrector" in the effects panel, then in the Effect Controls window, about halfway down that effect, there's a few boxes to set black, grey and white levels. Select the eye dropper for each and select the brightest, middle toned, and then darkest area respectively. This will give you ROUGH but closer colors. Then I'd throw on a curves effect and go from there. A basic knowledge of color/image editing is necessary. But I've gotten solid results when I've CC my own films before. I've gotten truer colors when using a curves layer for the heavy color correcting and then tweaking that with maybe a fast color corrector layer for saturation or tint.

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