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Messages - marvinhello

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31
They say they can already control the bit-rate, but only at high ISOs. That's weird. Anyone understand that one?

The bitrate maxed out at 151Mbps at ISO12800, if using normal ISO like 100-400, even if we change the H264 parameter to the highest value possible, there is no obvious increase in bitrate, around 47Mbps in ALL-I, 32Mbps in IPB.

33
EOS Bodies - For Video / Re: IPB vs ALL-I settings
« on: May 27, 2012, 08:05:42 AM »
So the 5D3 should be able to rock it at 250Mbs. Thanks for the correction on the lack of Raw on 1DC.

5D3 uses H264 compression, it's a bit different from Motion JPEG, I prefer Motion JPEG :)

34
EOS Bodies - For Video / Re: IPB vs ALL-I settings
« on: May 26, 2012, 06:17:03 AM »

the pathways for stills record raw data. video needs to be processed and tons of data discarded. this bit rate is likely baked in the circuits and can't be really upped or they would have started higher. if you want higher rates you need a clean uncompressed HDMI out. hopefully magic lantern will find a way since that is the only real solution to bit rate issues.

I don't know. Just think about what the 1D-C can pump out, with Raw 4k.  the DIGI 5 processor is a big leap over 4.

1D C doesn't have Raw 4K, it uses Motion JPEG compression, at 8bit 4:2:2, bitrate 500Mbps. Still highly compressed.

35
Will this GPS device benefit video recording?

36
I'm confused here
Alex n his team failed to port MAGIC LANTERN on 7D for last 1yr how all of sudden within few weeks of 5d3 release they have succeeded

i believe dual digic made it trickier but more importantly the 7D had some sort of limit on how many times a new firmware could be loaded before it locked out, maybe that was just a rumor (if not, hopefully the 5D3 won't have the same thing, or they can crack that part of it)

It's because 7D has dual DIGIC 4, the way 7D runs tasks are is quite different from single DIGIC cameras (such as 5D3), everything is handled by two processors, we don't know how they split tasks etc, hence it's far more difficult to port ML to 7D. But the work is being done. we haven't gave up.

So the whole thing about the 7D locking out firmware upgrades after a while was just a wild rumor then I take it?

Yes, it's just technical reason, nothing to do with Canon

37
I'm confused here
Alex n his team failed to port MAGIC LANTERN on 7D for last 1yr how all of sudden within few weeks of 5d3 release they have succeeded

i believe dual digic made it trickier but more importantly the 7D had some sort of limit on how many times a new firmware could be loaded before it locked out, maybe that was just a rumor (if not, hopefully the 5D3 won't have the same thing, or they can crack that part of it)

It's because 7D has dual DIGIC 4, the way 7D runs tasks are is quite different from single DIGIC cameras (such as 5D3), everything is handled by two processors, we don't know how they split tasks etc, hence it's far more difficult to port ML to 7D. But the work is being done. we haven't gave up.

38
EOS Bodies / Re: Will you send your 5D3 for light leak inspection?
« on: April 24, 2012, 10:15:49 AM »
I am not a professional and haven't reached the skillset required to take photos with my lens cap on, so I am sitting on the sideline and watching with amuse.

Well, "inspection" is just a smart wording to avoid sounding like they made a mistake. The announcement in Taiwan and China Mainland uses the word "repair", and a canon rep confirmed that if you send your camera in, they will open the camera and add a small part that blocks the light leak.

39
EOS Bodies / Re: Canon 5D MarkIII & 1Dx - 1080p/60fps???
« on: April 22, 2012, 03:16:25 PM »
There is absolutely no reason the Canon 5D MkIII should not be able to record 1080p @ 60fps. The Digic V has sufficient processing power. 1080/60p would most likely have to be limited to IPB compression though, as ALL-I would require a sustained write speed of about 23MB/sec.

Has anyone taken a look at the Sony a77?

It's a $1400 body with a 24.3MP sensor.
It records 1080/60p/60i/30p/24p and does so with an inferior processor to the 5D3.

It's simply a limitation of firmware. Canon purposely crippled the camera to protect their higher end models (which most considering the 5D3 can't afford anyway). It's not like people in the professional market would stop buying C300s, C500s, and 1DCs if the 5D had more advanced video features. The pros are still going to buy the dedicated cinema cameras for the expandability, advanced manual controls, and I/O features (HD-SDI, XLR, Genlock, Timecode).

And yes, I realize the 5D3 is a photo camera first, but 1080/60p is not something that would handicap, or take away from its photo abilities. It wouldn't even cost extra!

Datarate wise, I believe 5D3 can handle 1080/60p without any problem, 1D C records 1080/60p at 180Mbit ALL-I, same can be achieved in 5D3, the only issue would be sensor overheat, a friend from Japan told me that 1D C internal was redesigned completely to cope with the immense heat and dataflow of 4K recording.

40
EOS Bodies / Re: *UPDATE* Canon EOS 5D Mark III Stock Delayed? [CR1]
« on: April 13, 2012, 05:38:20 AM »
It probably lets them figure out some of the procedures of injecting new code into the camera. In any case, whatever the reason, one of the Magic Lantern guys stated that they need to wait for the first firmware update to begin work on it.

Exactly! please stay tuned

41
EOS Bodies - For Video / Re: Post your post-processing voodoo magic!
« on: April 11, 2012, 12:16:00 PM »
Try Pixelfarm PFClean, you get NR, sharpen, grain and chroma upscaling all in one single application, best so far for "restoration and optimisation" kind of work.

If you want somthing better than it and have $13000 to spare, try Cinnafilm Dark Energy.

42
EOS Bodies - For Video / Re: Act of Valor
« on: April 04, 2012, 01:31:16 PM »
Anyone know what glass he was using?  I saw that they used Nvidia technologies to post process which I happen to have a lot of so it would be cool to try to replicate the quality of film.

Zeiss ZF and Primo glass.

For postprocessing, it's the software that plays a vital part, it's called Cinnafilm Dark Energy, a $15000 standalone software that removes noise/grain/compression artifacts in an unprecedented quality, with additional ability to process digital footage to make them look like as if they were shot on film. This software relies on Nvidia CUDA acceleration and requires a Tesla GPU card to be present in a PC.

43
EOS Bodies - For Stills / Re: 5d mark iii, a few complaints
« on: March 27, 2012, 03:23:26 PM »
One more complaint, Canon is really trying to force us to buy new lenses as opposed to our old great L lenses we've amassed over the years. By not allowing them to be compatible with the new "lens aberration" function, we need new lenses, something that is very disappointing! I can't this great new feature that Canon has been lacking compare to Nikon for my 15mm 2.8 Fisheye, 85mm 1.2L, 17-35mm 2.8L, or 28-70mm 2.8L... I think all L lenses should be perfectly compatible, like come on Canon!!!! Almost forcing me to consider buying a 17-40 4L because that is the only compatible wide angle left in my budget after dropping $3,500 on the body!!!

You're incorrect. All you have to do is download the correct profile to your camera. They have data for most of their lenses, even the old "L's."

How about Zeiss ZE lenses? and Tokina 11-16? I hope someone can provide profiles for these lenses...

44
remember, to achieve the similar FOV in Super 35mm format, crop factor should be considered.
eg. in S35mm digital cinema cameras like FS100, Red or Arri Alexa, the FOV of 35mm is approximately equivalent to 50mm on a full frame, 50mm eqv. 85mm etc. Full frame offers a wider FOV.

45
EOS Bodies - For Video / Re: 5D MkIII vs D800 for video
« on: March 09, 2012, 02:32:49 PM »
I read that the other day. But the problem with that analysis is that the owner of that site is totally tilted towards canon (or I should say against Nikon) so I can't really take most the author says without feeling like I'm watching the fox news channel talk about democrats vs republicans  ;) I tend to avoid sites titled towards one manufacturer for this very reason.

I also saw his evaluation of the D800 came from that motorcycle video that was released on the web, and not an actual MOV from the camera. I was hoping to get an unbiased more scientific opinion of the D800's video strenghts, but I guess I'll have to wait for that to come from another source that is more objective.

For me, the thing that I find appealign of the D800 is the uncompressed video over HDMI at full 1080p. You can feed it external capture devices and pick your choice of bitrate and codec instead of beign tied to the camera defaults.
according to Philip Bloom, he was told that HDMI on the 5DIII is 720P and not clean or uncompressed
http://philipbloom.net/2012/03/02/mk/

So while dissapointing, it is not a deal breaker. But I'll want to see a capture of a D800 at a high bitrate from an external recorder versus whatever the highest quality output of a 5DIII is before deciding. I find macro blocking from the 5DII to be annoying and I'll be looking for that in 5DIII footage. I understand the 5DIII doesn't do line skipping like the 5DII does and that in this regard the D800 may be behind and have the same moire issues of the 5DII. For me, moire hasn't been an issue, and I've seen so much amazing footage from the 5DII that I think it will never be an issue for me. So while I welcome the reduction of it,  I was looking more towards clean video out of the HDMI.

I guess I'll wait for both cameras to ship and for some unedited MOVs to start making the rounds. It seems to me the majority of opinions right now are formed on speculation and guesswork instead of actual footage. So I'll wait.

Actually, footages from both camera have been released, for D800 there are two short clips which are about 120MB size, shot in bright day light, showed very good moire control. 5D3 footage is about 535MB (IPB), showed amazing moire reduction AND low light capability (iso3600), rolling shutter is 50% less than 5D2.

Personally speaking, resolution on these two camera looks identical, however i'd say that 5D3 performs a little better. There are obvious over-sharpened edge halo on the D800 footage

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