Tragic Lantern for 6D

[finnschi]

The question is, if we can send Every second frame out via the USB port, we will just need something with a USB host to wait and catch that Data (like a Laptop..)   

[1%]

Yep, laptop or external drive. Will need stuff anyway as the camera probably doesn't have USB host and the WFT does.

[finnschi]

Yep, laptop or external drive. Will need stuff anyway as the camera probably doesn't have USB host and the WFT does.

We will somehow have to make it work without the WFT adapter, that thing costs $700 , I cant really figure out what kind of electronic magic the WFT has in order to pull data off the Camera and then send it to the USB Host controller.

Anyway, I would think that as in many tablets the 6D has a "hidden" Usb Host built-in to the mini usb port  just like the Nexus 7.

[teo770]

Just discovered that when 6D is USB plugged in computer, you can't see the .RAW files.
Only .jpg and .cr2 files ....

Just tested Sandisk Pro Extreme 95MB/s 32 GB in a USB3 reader....
83 MB/s write speed
94 MB/s read speed

Now we are sure Canon 6D UHS1 is limited to 50MB/s !
For me, recording higher than 38 MB/s starts frame skipping so there are extra 12MB/s left to find !


Having a good/rock solid 40MB/s would be really just fine.
1536x640 24p, ratio 2.35, easy upscalable to 1920x800

[1%]

We have to find what interface WFT is using to connect to 6D/600D, etc. If its USB we can just use the USB port, if not then we have to use the grip pins.

[teo770]

Popular software DSLR controler used from an android connected to 5D Mrk II by USB wire:
Liveview display is 15 fps...

Just tested on 6D by Canon EOS utility, same fps
Transfert of a movie file 200MB by USB to PC is about 15 seconds so 13-15MB/s

[1%]

But that is a transfer through whatever wrapper + other canon stuff. Also connecting to PC may start LV jpegs reducing camera memory and using CPU.

[teo770]

Last raw_rec:
no beep
1504x600 24p stops after 1.6GB

The last really working for me was the one with 4x30MB buffers
At 1504x600, the 1st star only was blinking, never stops/frame drop

[noisyboy]

Hang on - isn't there already a program that does this? I used to have it on my PC with my 550D or whatever it was years ago. Plugs into laptop and records video from the live view.

[noisyboy]

Yeah - here http://sourceforge.net/projects/eos-movrec/

[teo770]

Yeah - here http://sourceforge.net/projects/eos-movrec/

Tested it this afternoon, can't see the 6D...

[teo770]

On the wifi side, a few elements. A web site tested diferent solutions to transfert some files (Raw, jpeg...etc):

Transfert by USB
Transfert using a Eye-fi Pro X2 card
Transfert using Canon's WFTE2

Page is in french but i think you ll understand the sheet "2) La vitesse de transmission"
http://www.cyrilbruneau.com/dossier-photographe-professionnel/eyi-fi-pro-x2-photographe-professionnel.html

Hope the wifi part in the 6D is more efficient !
I'm starting to love that USB idea !

Update: Funny, Amazon seems to read ML forums, they are offering you US buyers up to 60% off on Sandisk cards !!
http://www.amazon.com/gp/feature.html/?ie=UTF8&docId=1001046141&ccmID=380205
.... slow ones !!

[noisyboy]

Tested it this afternoon, can't see the 6D...

Pitty! Does this bridge any gaps in what you a re trying to achieve though. I remember it working very well when I used it in the past. Considering at the time there was no video capability on my camera :p

[1%]

Yep, that recorder doesn't work. 6D the live view sending changed a little.


Sucks that its stopping sooner now. I tried other buffers, not sure what to do.. I think the small blocks are slowing things down. I don't see what its allocating anymore, it does an average. How much did the write slow down by?

Fixing a few things with wav.

[noisyboy]

Yep, that recorder doesn't work. 6D the live view sending changed a little.

Ah okay! Might help with your other cameras though maybe! Nevermind

Will check how much it changed in a mo. It was quite a big change for me personally. I'll load both versions on separate cards and compare.

[teo770]

Sucks that its stopping sooner now. I tried other buffers, not sure what to do.. I think the small blocks are slowing things down. I don't see what its allocating anymore, it does an average. How much did the write slow down by?

Still 1504x600@24p stopping: 1000 frames around 1.5-6 GB.
Can you display buffers size too like before ?

[1%]

That should be displaying, not sure why its not popping up anymore.

[DTSET123]

Still 1504x600@24p stopping: 1000 frames around 1.5-6 GB.

mine stops at 1500 frames. Deff slower now

[1%]

But what about write speed during recording? Lower?

For me it usually sticks around an average after ramping up.  27.something. Before it would skip frames and not stop, what does it do if you make it skip frames?

[DTSET123]

cant remember before speed but now:
@35.1 MB/s it stops after 1500 frames
when set to skip frames it stays at 35.1MB/s and skipped 36 frames until 4GB

[1%]

Try the older module to compare I guess.

That would suck if you're losing 3MB.. Before it wouldn't allocate all of the memory just use the 30MB chunks. Now it does the whole thing... maybe the double buffer is too big? Putting it back to the old way causes overflow in zoom 10x/5x

[DTSET123]

in photo mode I get 35.4 and got 2128 frames with global draw on.
exp sim off. with exp sim on it is back to 35.0

[1%]

But with the older (4x30) module it was?

Yep.. .getting slightly higher speeds in Photo/720P (worse image)/ and 640x480... really going to help to kill photos and get more memory.

[a1ex]

Now it does the whole thing...

Only 16MB and higher blocks. Maybe 16 is too small?

maybe the double buffer is too big?

Now it's as small as it can be (the size of one frame). In crop mode it's bigger, in 1x mode it's smaller. For safety, recording stops when you change the video mode.

[1%]

I tried minimum blocks of 30,32, 4, 8, 16, 28... did not see a difference... In fact with this one all I've been able to do is slow it down. So maybe its as good as it can be until we can allocate at least 200MB or something.

BTW, panning is working pretty well. One time it tried to move the zoom box first and there was a jump... I guess only move the zoom box with the set button? But how to center the frame again?