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#31 | ||||
Trustee
Join Date: Apr 2005
Location: Santa Cruz, CA
Posts: 1,116
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TrueColor is just another tool in the arsenal of the shooter. BTW, the name was given to it by one of the moderators of the JVC forum, not by me. It just stuck :) |
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#32 |
Trustee
Join Date: Apr 2005
Location: Santa Cruz, CA
Posts: 1,116
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You know, you are actually right, I meant to raise that value a couple of notches but I forgot. The initial setup for the DSC chart asks to move the master black so that the black chip falls in the zero IRE point but the chip is, of course, partially reflective. A more accurate configuration would be to keep it around 1-1.5%. Try at -7 and let us know.
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#33 |
Tourist
Join Date: Feb 2008
Location: Puurs, Belgium
Posts: 4
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Another blue ...
Hello,
also being a new owner of a A1 I am looking for good presets. This TrueColor looked very interesting to me. When applying it I also remark much of blue. I saw some other people have the same problem. Any solution/suggestion how to correct this ? (I have no calibration equipment) Greetings, Rudy |
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#34 | |
Trustee
Join Date: Jun 2006
Location: Burbank
Posts: 1,811
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#35 |
Major Player
Join Date: May 2005
Location: Columbia,SC
Posts: 806
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Hey All,
I did some testing with the true color today, and I noticed that the color changed so radically, that I had to re-white balance from other presets. Once I did, I found that the blue went away. I also raised my sharpening to -6 and the ped to -7. I think it looks good. I also seemed to get a light boost somehow. This one might be a winner. I will post results when I get them. Bill |
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#36 |
Major Player
Join Date: Mar 2005
Location: Ontario, Canada
Posts: 916
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Dirk the approach using charts like the ChromaDumond makes a lot of sense and is well established in industry. The colours in these charts are spectrophotometrically accurate and comply with SMPTE 274M colorimetry. There is really no better way to calibrate a camera as human perception, LCD calibration, monitor calibraton etc. are all taken out of the equation. It's not perfect, but I've yet to stumble over a better solution.
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#37 |
Regular Crew
Join Date: Nov 2006
Location: AC, Belgium
Posts: 75
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I hear what you're saying, all, and really: it is very interesting.
I was one of the first wave of A1 owners, and have been playing with quite a few presets ever since then (DVInfo was the major focus for me, but also Wolgangs' website was quite interesting). Like probably everyone with an A1, I spend quite some tapes and hours, capturing, comparing, ... in establishing a shortlist of presets, that could serve my purpose - because after all, not all shooting purposes are the same. Also true - like probably again quite a few A1'ers, I've sometimes been disappointed after I shot the final footage, even after a lot of experimenting. Looking for something more cine-look, I went over the DVX-emulations towards, VIVIDRGB - and this one in particular - put on a pedestal by some in this forum - has entirely mislead me, because greens suddenly go to... brown. Something I experienced in the field, and I don't say I'd spoiled my footage, but I was not happy either, this type of exaggeration was one street too far. The increase in gain by applying presets is not really new - it's not so much surprising me. You convinced me to do some further testing with this preset. Paolo, I'm sure you did a great job, let there be no discussion about this, thank you very much to set direction. |
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#38 |
Major Player
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 959
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Dirk, I've noticed your posts before regarding green looking brown. I've never seen this at all.
The only weird thing I've seen is with certain shades of purple being blue, no matter what preset and/or WB is used. Wolfgang's site at one time had something about this but I can't locate it anymore. |
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#39 |
Major Player
Join Date: Mar 2006
Location: Las Vegas, NV United States
Posts: 361
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I will play with this setting this weekend.
Bill Grant - looking forward to your findings on your adjustment and maybe a nonCC screen grab or two...
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Lonnie Bell mamas boy productions Las Vegas, NV |
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#40 |
Major Player
Join Date: May 2006
Location: Colorado
Posts: 288
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Thanks Paolo for this new preset (and everyone who has been tweaking it and Taj and Dennis who coded it for us). I watched a PBS show on Ansel Adams this week. They focused a lot on how his goal with large format landscape photography was to acquire a film negative with all the latitude he needed for artistry in the dark room.
Of course the XH-A1 will never have the latitude of film, but I am excited about emulating this general approach with the A1. Cheers, Pat |
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#41 |
Regular Crew
Join Date: Feb 2008
Location: Victor, Montana
Posts: 61
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True Color Preset
It is interesting that Adams and Mourtensen (http://thescreamonline.com/photo/pho...mentnotes.html) used very interesting Post techniques to arrive at what they considered the best work they could command. I studied Adams and became fairly good at achieving his look through darkroom practices, in photographs, which I love. Color, not so good but in B&W the darkroom is your slave once you are a little experienced in the dillutions and timing techniques. I also did, or attempted to reproduce some of the Mourteneen effects but the results were not nearly as predictable and some were good while some were terrible. As for video, especially digital video, one has a fair amount of latitude in the post process. But it takes a lot of time and work to achieve the manipulated results one is looking for. But I really enjoy all of this, the struggles we all go through in pushing the envelope to achieve a desired result. Great A1 stuff here and right on. Shoot a good non manipulated negative (positive) and do with it what you wish in post.
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#42 |
Major Player
Join Date: Mar 2005
Location: Ontario, Canada
Posts: 916
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Paolo doesn't own an XH-A1, otherwise like the JVC (an excellent write up on initial HD100 colour tuning, then tweaks after field use on his website), I'm guessing he'd tweak the living daylights out of this one. I do have an XH-A1, and the rear illuminated DSC OSG's, but I'm much lower on the learning curve when it comes to the myriad of parameters possible. Like Paolo, I share an intense interest in wringing all that is possible out of the digital realm.
To complement Paolo's work we'll be doing a similar exercise with the HV20, XH-A1, EX1, and HPX500 looking at color rendering, dynamic range, ISO rating, and resolution. This is more to characterize these cameras in terms of adapter use, but the results should be interesting. There is no question that the XH-A1 (and all the Canon cams up the scale) as well as the Sony EX1 offer an amazing feature set to tune the camera's beyond most user's understanding. What I can offer to do is take requests from this thread with regard to changes to the preset and see what effect they have on the waveform and vectorscope. We'll start the test series likely this week. |
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#43 |
Major Player
Join Date: May 2005
Location: Columbia,SC
Posts: 806
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#44 |
Major Player
Join Date: Mar 2005
Location: Ontario, Canada
Posts: 916
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Bill what did you think? I have to admit that although the truecolour was the darkest, it also looked the best to me. One thing that I would look at changing is the black setting to expand the blacks a bit from their crushed level in the preset. It would be interesting to try this in post and see how it looks.
The VX2100 is still the king of the affordable DV cams in terms of light sensivity IMHO, but that barrel distortion at full wide is huge! |
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#45 |
Trustee
Join Date: Dec 2006
Location: Central Coast - NSW, Australia
Posts: 1,606
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[QUOTE=Dennis Wood;846910I have to admit that although the truecolour was the darkest, it also looked the best to me.[/QUOTE]
I thought so too but surely the point of the truecolour preset is to retain the maximium amount of information so the image can be altered in post therefore an 'in camera' comparison is not valid. In fact while comparing any other preset on any one or a mix of camera's we are comparing a 'finished product' (an image with little work to do in post) whereas the truecolour preset is set to give the best raw image which theoretically can be manipulated in post to give a 'better' finished product. in rereading this it sounds like I actually know what I'm talking about - that's highly unlikely, it's just my limited understanding of the preset and how it works Last edited by Paul Mailath; March 22nd, 2008 at 10:07 PM. Reason: humility |
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