Re: Broadcast work with the Canon5DmkII by Peter Wiggins on Oct 21, 2009 at 12:12:04 am
Let me put it this way, I will never buy another zoom :)
Peter
Re: Broadcast work with the Canon5DmkII by Joe Fountain on Oct 21, 2009 at 3:36:37 am
Good work there Peter, very nice flow. I have the 7D and am wondering if you have had any experience of artefacts with 5Dmk2 footage that some people seem to be experiencing and if so, to what degree? I haven't experienced anything that is noticeable or even detectable on a large screen and am wondering if it may be a difference in the cameras. I watched your piece in HD and it looks fantastic, so perhaps this may be a compression issue or even a hardware issue?
I've seen some compression artifacts, but that has been at low, low light levels.
Peter
Re: Broadcast work with the Canon5DmkII by John Davidson on Oct 21, 2009 at 6:00:47 pm
Assuming I have a 'bearable' zoom, would you recommend the 1.2 50mm as my first L lens? Especially if the goal is to make the most out of night shots and low-light?
Re: Broadcast work with the Canon5DmkII by Peter DeCrescenzo on Nov 5, 2009 at 1:57:47 am
Just an FYI:
Much of the apparent "detail" in the "HD" video produced by cams such as the 5DM2, 7D, 1DM4, GH1, etc. _is_ aliasing. Much of what looks like real detail in their video is actually false detail -- visual information created by the way these cams create 2K video frames from 12MP+ sensors using binning techniques.
Many people don't notice most of the fake detail most of the time -- PT Barnum lives! -- but it's important for video professionals to know it's there. And it can bite you in the butt if you're not careful. But (pun intended), you can't make the aliasing "go away". You can only avoid scenes which trigger it, or adjust focus, exposure, filtration, wardrobe, props, sets, lighting, etc, to minimize it -- or soften problem areas of the frame in post (ick).
DSLR "HD" video resolution is only slightly better than pro-quality standard definition video or poor-quality 720p HD video.
This can be OK for many relatively lo-fi delivery media (e.g.: DVD, small-size web videos, etc.), but will be problematic for most broadcast (or post) or higher end distribution depending on what final look is desired.
You don't have shoot test charts to prove this, you can see in real world subjects, too. But charts don't lie. Multiple testers are reporting approx. 600-700 lines of real resolution in "HD" video recorded by the popular DSLRs.
I'm not bashing DSLR video. I'm actually looking forward to buying a GH1 soon. But I'm glad Barry & others are testing these cams thoroughly so we can know better what to expect out of them.
