FilmMan Posted June 20, 2012 Share Posted June 20, 2012 There is talk that the T4i could have clean HDMI out. I heard some Canon rumblings last month. Maybe, just maybe. Quote Link to comment Share on other sites More sharing options...
FilmMan Posted June 20, 2012 Author Share Posted June 20, 2012 http://www.personal-view.com/news/articles/johnnie-behiri-confirms-clean-hdmi-out-on-canon-t4i-650d Johnnie Behiri confirms: CLEAN HDMI OUT on Canon T4i / 650D TweetThis is not a joke. Johnnie Behiri just confirmed that the Canon T4i seems to be Canon’s first HDSLR camera that has a clean hdmi-out feed! Is it usable? That’s an important question. Initial testing was done with an Atomos Ninja 1 and the footage had some issues. The signal is clean, but further testing has to be done to see if the 650D’s signal is actually usable for external recording. Canon & Atomos have been contacted to make sure they can work out any issues here. We’ve seen a similar situation before when the Nikon D800 & Atomos Ninja combination posed some challenges that have now been resolved. A source of the problem could also be the fact that the camera used was a beta model. What does it mean? Up until this day all Canon HDSLR cameras had overlays within the hdmi signal that could not be removed making an external recording impossible. The signal coming from the beta Canon T4i / 650D tested is clean. In theory having a clean signal means that you can record the video feed to an external device like the Atomos Ninja and get a ready to edit, quality encoded Apple ProRes file. The signal from the beta 650D seems to be routed to the hdmi port before it is being compressed. There are definitely less compression artifacts in the footage recorded on the Ninja than in the h.264 internally compressed files. The Canon Rebel T4i / 650D kit with the 18-55... Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted June 20, 2012 Administrators Share Posted June 20, 2012 It is worth keeping an eye out on Johnnie's progress. He's a good guy. As for the 650D , the codec is not the weak point. I think the HDMI is an interlaced signal and it won't solve the moire or resolution issues - very unlikely to anyway. Quote Link to comment Share on other sites More sharing options...
Simco123 Posted June 20, 2012 Share Posted June 20, 2012 So contarary to your previous report, Andrew, were you claim there is zero reasons to get the 650D because Canon you claimed made no improvement. Do you think you have to back track on your earlier statements? We have yet to see how well the 650D can grade and if it is anything as good as 5DIII in sharpening. Why did Canon not mention clean HDMI? Maybe they don't consider it such a big deal given the small difference it made to colour space while Nikon trumped about it and some people were clearly duped. Quote Link to comment Share on other sites More sharing options...
Axel Posted June 20, 2012 Share Posted June 20, 2012 [quote author=Andrew Reid link=topic=869.msg6302#msg6302 date=1340185442] As for the 650D , the codec is not the weak point. I think the HDMI is an interlaced signal and it won't solve the moire or resolution issues - very unlikely to anyway. [/quote] Doesn't need to be a problem. The Sony EX3's output (via HD-SDI!) i.e. to a Samurai, also pretends to be "i", but only for some compatibility-thing, it still is progressive if you see the content of the frames. Same with the GH2. [quote author=Simco123 link=topic=869.msg6303#msg6303 date=1340186296]Why did Canon not mention clean HDMI? Maybe they don't consider it such a big deal given the small difference it made to colour space while Nikon trumped about it and some people were clearly duped. [/quote] The compression artifacts you have to deal with if you deal with compressed video are often misinterpreted. If with the 650D the datarate still is an average of 40 mbit/s, you don't have to fear a lot of those. What you then see as problems is from another cause, one which is not eliminated by uncompressed output. I think Canon is right, that clean HDMI out is not such a big deal. Other cameras have it long since, and therefore you hardly can sell it as a big thing. Quote Link to comment Share on other sites More sharing options...
Administrators Andrew Reid Posted June 20, 2012 Administrators Share Posted June 20, 2012 [quote author=Simco123 link=topic=869.msg6303#msg6303 date=1340186296] So contarary to your previous report, Andrew, were you claim there is zero reasons to get the 650D because Canon you claimed made no improvement. Do you think you have to back track on your earlier statements? We have yet to see how well the 650D can grade and if it is anything as good as 5DIII in sharpening. Why did Canon not mention clean HDMI? Maybe they don't consider it such a big deal given the small difference it made to colour space while Nikon trumped about it and some people were clearly duped. [/quote] There's still zero reasons to get one. The HDMI output is as shit as the camera judging by early reports. Wake me up when it gets even close to the GH2's image and I'll consider it. Zacuto's shot in the Revenge episode on the 7D would look as bad either via HDMI or via the internal codec. I'm yet to see an HDMI output on a DSLR that gives you a significant boost in image quality, or sorts out moire, or gives you more resolution, or better dynamic range, or less aliasing. It certainly won't sharpen in post as well as the 5D Mark III, because the moire and aliasing artefacts would be brought out even more. Try sharpening your 600D footage, same thing. Quote Link to comment Share on other sites More sharing options...
FilmMan Posted June 22, 2012 Author Share Posted June 22, 2012 Blue balls! Tease, tease, tease. Is this what Canon is doing? Do they realize BM, Kineraw, and others coming...??? Canon EOS Rebel T4i Has Clean HDMI Out. Almost. *UPDATE* http://wideopencamera.com/cameras/canon-eos-rebel-t4i-has-clean-hdmi-out/ Quote Link to comment Share on other sites More sharing options...
FilmMan Posted June 22, 2012 Author Share Posted June 22, 2012 Or read this link. http://www.hireacamera.com/blog/index.asp?post=canon-eos-650d--hdmi-explained Quote Link to comment Share on other sites More sharing options...
FilmMan Posted June 22, 2012 Author Share Posted June 22, 2012 Is Canon doing this so Magic Lantern comes up with the solution? Marketing? Doubt it but who knows? Quote Link to comment Share on other sites More sharing options...
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