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Messages - PressureFM

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General Help Q&A / Re: Lexar 1000x Read/Write speeds Issue
« on: February 20, 2014, 04:42:02 PM »
that resolution is not sustainable on the mkII. Try 1856x928 or 1728x972 16:9 . They should be good.

Pish posh, I have been doing 1856 x 1044 continuous (raw_rec) since last year.

Your mileage may vary though.

To the OP, remember that the advertised speed is always READ speed and not write speed, unfortunately.

Raw Video / Re: exposure flickering?
« on: February 16, 2014, 04:20:20 PM »
What lens?

Raw Video / Re: 5D3 Raw VS. Black Magic VS. RED MX // TEST RESULTS
« on: February 11, 2014, 10:45:21 PM »
Well, "full frame" as it relates to the world of photography is kinda moot when it comes to video. Pretty much every single DP that I know is annoyed at the extra mental calculations that he/she needs to do to convert focal length to what they're actually used to shooting on.

I doubt photographers mind. The Canon 5D Mark II really changed the game.

Isn't it really a discussion about the dinosaur and evolution? ;)

Raw Video / Re: Raw video on 5DMK2
« on: February 11, 2014, 10:44:23 AM »
Can someone help me out here?
Been watching a lot of comparison videos on youtube of RAW vs h264 in the Mark 2 and Mark 3 - The only difference I can see is a slight dynamic range and a good amount of shaper detail. I thought the raw was suppose to give it waaaay more dynamic range. What have your experiences been in seeing the difference in RAW vs h264 straight from the camera?


14-bit RAW vs compressed 8-bit 4:2:0 H.264 codec.

They are worlds apart.

Try out for yourself and see the difference, it's night and day. It isn't for fun we are jumping up and down like small children on Christmas Eve.

Can someone tell me where to find comparison between MLV and the regular RAW formats in magic lantern? Thank you!

Look at the very first post of this thread.

MLV is a container for both DNGs, metadata and sound, whereas the older RAW module only handles DNGs.

General Chat / Re: The New Digital Bolex 16mm 12bit Raw CDNG's
« on: February 09, 2014, 08:59:37 AM »
I could never work out if the digitalbolex was open source or not.

One thing that disappointed me from the start when I saw this project is the max fps at 2K is 32fps
Couldn't this have at least been pushed to 48?

I mean it's good to see that there are somewhat affordable raw cameras coming out, but I do wonder.

Most likely a limitation of the Kodak image sensor.

I shoot music videos. Most are under 5 minutes but that's a lot of dngs to edit in camera raw. Anyone know how to apply color settings to 5,000 dng's in camera raw, without opening all of them? I made a preset that would work well on the rest but if I drop those 5,000 dngs in photoshop, it's going to take over an hour to open it and I have dozens of takes. Any tips?

You only need to do it for the first DNG in an image sequence in programs like Premiere Pro.

a.d. & pravdomil's 5D2 builds / Re: 5D2 RAW video Builds 14-Bit
« on: February 06, 2014, 09:54:01 PM »
Great answers it made me a little more informed on the world of Magic Lantern RAW. Shoot in Crop mode you said will eliminate most Moire errors, but doesn't that bring the image too close for frame accuracy?

It simply means you will have to move to a wider lens, which luckily isn't a problem with EF mount. Many great options out there.

Because of moiré I usually only shoot in crop mode and it gives me continuous shooting with my cards.

General Chat / Re: Upgraded to Canon 5D Mark III....kind of disappointed
« on: February 06, 2014, 10:16:36 AM »
Post an example of the same scene using the 5D Mark III and your BMPCC please :)

So, what printer did you use and what resolution is that chart?

I'm just asking because a real resolution chart like that starts at $225 and upwards to $950 to get in the correct resolution print.

a.d. & pravdomil's 5D2 builds / Re: 5D2 RAW video Builds 14-Bit
« on: February 03, 2014, 11:48:30 PM »
Yeah, I get the same in cropped 2144 x 1076.

Fine in 16:9 1856 x 1044.

Tragic Lantern / Re: 50D Raw video
« on: January 30, 2014, 04:05:32 PM »
I should add that if you're Mac centric, the support to convert the mlv to dng frames is limited - there's better support on the windows platform. Also, I'm not sure if it's my process or the utilities but my mlv dng's didn't play nice with Adobe Camera RAW, I was still getting some  magenta cast which I do not get with regular RAW dng's . . . It may have something to do with the metadata, but I haven't been able to figure it out.

To quote myself ... MLV support is fine in OS X.

Indeed there is, everything can be found in this thread.

Otherwise users can search for "recursive0.4.command" :)

Tragic Lantern / Re: 50D Raw video
« on: January 30, 2014, 01:11:22 PM »
Can anyone recommend a portable device for recording with acceptable quality?

Audio or what?

Zoom H4n and Zoom H6 is used a lot.

General Development / Re: 7D Dual processors
« on: January 30, 2014, 09:20:41 AM »
hey everyone,
i'm new here. but i was wondering if it were possible to utilize the 7D's dual processors as an advantage to video. i speculate that during high speed stills capture, the processors ping-pong between each other so that it doesn't run out of buffering. i'm wondering if the same could be done in video--frame-by-frame. that way, you would be able to divy up the processing power making it more efficient. if this is possible, let magic lantern know!

The short answer is: no.

The long answer can be found by reading the development for Magic Lantern on the Canon 7D.  The processors exist in a slave / host configuration and the developers only have access to the slave processor for the time being.

Tragic Lantern / Re: 50D Raw video
« on: January 29, 2014, 08:36:50 PM »
I think there is a batch script for .mlv on the mac?

.mlv is the same, uncompressed format as .raw but adds metadata and you can record audio (but not on the 50D because we don't have a mic or input for a mic).

Indeed there is, everything can be found in this thread.

Otherwise users can search for "recursive0.4.command" :)

Raw Video / Re: Uncompressed 14-bit RAW video testing - 5D Mark III
« on: January 29, 2014, 08:49:37 AM »
Hey this is probably a very well known thing but I just wish to get some clarity. 

I have been shooting .MLV raw this whole weekend and have discovered that the .WAV audio file is about 2 seconds longer than my .dng clip length. 

Why is that?  Is there a way to have it the same length?  Also is the extra audio at the end of the clip or at the beginning?  It appears to be at the end. 

Thanks again for such an amazing tool guys.  You're amazing.

The processor is already, more or less, maxed out. So the commands are queued to end one process after the other. First it stops video and then sound, hence why sound has a longer duration than video.

As have been suggested, it is very informative to put on your reading glasses and grab your favorite cup of beverage and start reading. I doubt people are that interested in spoon-feeding when the treasure trove of information is freely available.

Raw Video / Re: Raw video on 5DMK2
« on: January 26, 2014, 05:53:32 PM »
I'm using an Iogear card reader, model # GFR281

USB2.0, USB3.0 or FireWire?

Not all card readers are compatible with Komputerbay Compact Flash cards.

Raw Video / Re: Raw video on 5DMK2
« on: January 26, 2014, 11:20:22 AM »
I've tried some 64GB Komputer bay cards and it appears as though my 5D Mk II is either making them corrupt, or the cards are defective. They work fine for recording for about 10 seconds. I copy the files onto my computer, then put them back in the camera to format them, keeping the ML on the card.

I did another shoot, used the same process, except this time when I put the cards back in my camera, it doesn't recognize them and says they weren't formatted in this camera and to re-format them. The weird thing is, is that there are jumbled up words in the upper left hand corner of the screen. It looks like 2 or 3 layers of words so i can't make out what they say.

I can't reformat the card on the camera, it won't allow me to select that options on the camera, and even if I delete everything on the computer and totally wipe the card clean, it still won't allow me to format them in-camera. It has happened with two of my 64GB Komputer Bay cards.

Do you think it's the cards themselves? Maybe I should return them as defective and try out a different brand...

What card reader do you use?

Reverse Engineering / Re: CMOS/ADTG/Digic register investigation on ISO
« on: January 25, 2014, 03:28:38 PM »
hmm it looks like the DFE is the fpga in 5D2..

What would that imply?

Sorry if it comes off as being ignorant  :P

Raw Video Postprocessing / Re: MLV RAW to Normal Clip Workflow
« on: January 21, 2014, 04:58:45 PM »
Why don't you just use Premiere Pro?

It supports DNG sequences just fine.

You should really not convert your RAW files until you need to export it.

Reverse Engineering / Re: CMOS/ADTG/Digic register investigation on ISO
« on: January 16, 2014, 01:37:02 PM »
Have anyone checked the 5D Mark II?

Or how would I do it?

General Chat / Re: Sharpening, where to find good information
« on: January 16, 2014, 11:18:42 AM »
Those pictures you link to are multiple exposures and most likely use Focus Stacking as well. You can make your photos sharper and cleaner by using a median stacking algorithm to improve the Signal-to-Noise ratio.

Raw Video / Re: Not sure if am doing things right
« on: January 14, 2014, 05:59:30 PM »
It looks just fine in my eyes.

A quick trip through Adobe Camera Raw with VisionLOG and warmer white balance, tint and contrast nets this.

As far as I am aware, you are limited to LiveView resolution, e.g. 1/3 the sensor size (1872 x 1258 pixels).

More importantly: how exactly would the hardware support this new controller chip?

A camera isn't built like a computer with standardised interfaces, connections, protocols.

Not to mention firmware and software related issues.

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