DVL-Digest 1471 - Postings: Index Gamma Curve adjustment Gamma Curve adjustment - "Crittenden, Jan" ------=_NextPartTM-000-c250fbd9-65f0-4d73-88bc-142d91cc851c Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01C2F850.A876DF30" ------_=_NextPart_001_01C2F850.A876DF30 Content-Type: text/plain; charset="iso-8859-1" Randy asked: Here is a question: would it be better to do in-camera Gamma adjustment, or to do this with external stuff like contrast-reduction filters? you are correct that it takes a good engineer to do this right, and that sounds like things could go very wrong if its not done right. On the other hand, external stuff can be taken off, but it might not be as good. Hi Randy, While I do agree that it takes some knowing on what the adjustment does, I do believe wholeheartedly that the adjustment can be made by anyone that has a set of eyeballs and really "looks" at the picture on the monitor. An adjustment made in combination of Gamma, White Clip, Knee and Knee Slope, will get anyone through the Black Faces, White Shirts, Theater Lighting scenario, looking like a total genius, detail in the faces and shirts, no blown highlights unless you want them. You just have to look. And BTW, There is no outside attached filter that will replicate a good adjustment in the camera, where it can be fine tuned. Martin wrote: It's not only the Ike's which do this, but getting quite common among camera's which are being advertised for e-cinema aquisition, like the Panasonic Varicam and the Sony F900's. These HD Cameras have many different layers of adjustment and in the VARICAM there is a Film Rec setting that more closely replicates a film look, but because I am a video person I tend to the CineGamma Video Rec which allows me to go in and still tweak Gamma. Am I an engineer, not by any shade of the imagination, I just have an opinion about how I like the picture to look. >Hmm, come to think of it, even the humble Sony DSR500 has a Cine-gamma setting and I used a Panasonic AJD610 which has it too, although I imagine it will have less fine-control then it's bigger brothers. The settings would best be left to a good engineer to get most out of it. Every DVCPRO camera has these settings and the up-coming AJ-SDX900 has even more. And unless you have an engineer that is tuned to an artful expression of tonal detail, then you may very well end up with a video picture that looks like really nice video. It isn't rocket-science, just takes some familiarization with the imaging and the DSP control. If working with a rental facility, ask them if they could spend some time going through the menus and control features prior to leaving their place, and then just rent the camera for a day extra so that you can spend the time. The menus can be reset to factory very easily so if you tweak it so that it looks like mud then re-initialize and you are back to ground zero. On most of the DVCPRO cameras there is a PCMCIA or an SD Memory Card that you can store the setups on and reload on a different day and time. So you can plan your entire shoot and the various looks that you want and store them for later recall. Rent a good Monitor with SMPTE Phosphor and set the monitor to the SMPTE Color Bars. Then tweak away. If buying the camera then ask your dealer to walk through the menus with you and repeat the same suggestion above. Take each parameter and run it up and down the scale it controls and watch the monitor, the changes can be subtle but they will be there. The menus are there for your empowerment. Hope that helps, Jan Crittenden Product Line Business Manager DVCPRO, DVCPRO50, Standard Definition Cameras Panasonic Broadcast & TV Systems ------_=_NextPart_001_01C2F850.A876DF30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ------_=_NextPart_001_01C2F850.A876DF30-- ------=_NextPartTM-000-c250fbd9-65f0-4d73-88bc-142d91cc851c-- (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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