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Daniel
these tests were done today in response to Mikael's posted concerns I have been aware of the effective differences in the detail settings for some time now but I was not fully appreciative of the differences until I completed this test earlier today - those shots speak for themselves all shots were ingested at "medium" cineform settings no probems yet with 2.0, although I haven't completed anything beyond 30 minutes thus far cheers Pete |
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I'm not sure I understand this... are you saying Zebras are at 100 and you're putting the highlights very near 100? yes, zebras set at 100 ... highlights as close as possible without clipping I could have gone to F8 and still got a reasonable shot, but I found that keeping it open and towards the lighter side of exposure helped to soften the visible blocking. If I had an ND8 I would likely have opened it up to F4 |
Very cool findings Peter, even more so just in time for some pro motocross I'm shooting this weekend! All the fast moving action had me a little concerned with HDV. Thanks for sharing. I may post my results from the race as well
As for the PPro 2, are you on an AMD x64 system or an Intel P4. |
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Very useful information, I will test that. |
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If you can play around a little consider getting some closeups of bikes landing so you can get the dirt/mud flying. Try out the the 50p or 60p modes in SD so you've got some slow motion too. You might try zooming in with a wide aperture and then pulling focus. I bet with some practice you could get it working. Make sure to have some background in there like trees so you can appreciate the shallow DOF. That should be a great testing ground. Test your black level in advance. In our tests we seem to like -1 or so to avoid crushing detail you may want to see. |
Going way OT here, sorry...
Joel, those are all on my list of things to do... and then some, you are a mind reader no doubt. After shooting all of the GNC/GNCC motos last year with the Canon XL1s and a new 20X lens, i'm looking forward to the JVC / Fugi and overcranking some of the action. I use Paolos DSC settings but with the blacks at 0, even -1 is too crushed for me. |
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30p tests
My 30p test shots are now posted
all of the same same settings as used in the 24p shots with exception of going to F4 ... regardless, Barry's suggestion that 24p displays less blocking artifacts seems to hold true ... see for yourself www.vidprostudios.com click on the small text in the middle of the page "settings" when it first opens cheers |
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For most purposes it doesn't bother me in the least. Do you watch your footage with your face next to the screen or with a magnifying glass? Also, there are ways to massage it in post without softening the picture too much. If I were shooting something for Discovery HD, I'd tap the SDI so I didn't have anything to worry about. Same with the JVC, tap the analog if it's of utmost importance to avoid any of these kinds of artifacts. |
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"Barlow Elton... Do you watch your footage with your face next to the screen or with a magnifying glass"? DOH! Guilty as charged. hehe... don't we all? Joking aside Barlow, I would love to have a portable device to capture from the JVC / anolog, it would maybe reduce the face prints on my LCD screen. ;) Peter, what was your shutter set to on the HD downhill series of runs on your site? It looked like a good balance of motion/action. I tend to push it up around 250 for the motos I shoot. |
Here is a short kayaking m2t clip from the wonderfull acipellago in Stockholm.
Filesize: 3.21mb. http://www.plonk.se/artifacting.m2t The artifacts in the water is hard to see, but in the sky you can see them quite well. All settings are at normal, no gain, 25P. |
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I was in a hurry that day so I didn't write it all down but I do remember that most of my shots were at 250 shutter. At the time I only had the on-camera ND2, were I to add on the ND6 that I now own, I would have likely gone to variable shutter and dialed it in to 120 or so for a bit shallower DOF on some shots. As you can see, many shots were clipped but I didn't want to shut it down more than F8 and didn't want to go any faster than 250 ... I took the middle road and accepted the outcome. This was all shot at 24p, so I think it turned out okay for my first time out with the new camera on snow. The original full rez footage does not appear as clipped as the down-converted .wmv shown on my site and is of course much richer in it's colors. I threw this piece together in about 90 minutes including ingest time of 40 minutes of footage. Little to no CC ... had to have it ready for the banquet and awards ceremony soon thereafter cheers PS: that was the actual sunrise from my deck that morning |
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On the bright side, if you shot a scene like this with an HVX-200 you'd have a screen full of dancing colored noise that would be easy for everyone to see. |
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