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Messages - LightCtrl

#1
Feature Requests / Re: magic lantern for raspberry pi
December 11, 2015, 09:49:42 AM
Second that! 

With this a shield hdmi adapter you can connect the Raspberry pi, or the direct feed out of the camera to a DSI smart phone panel (iphone 4, LG, Samsung).  Cheap and High quality.  all its missing for the perfect field monitor is the software (ok maybe more then the software but its still sick)

https://hackaday.io/project/364-mipi-dsi-display-shieldhdmi-adapter
#2
General Chat / Re: Apertus Axiom Beta
December 08, 2015, 09:25:49 PM
According to Twitter the Axiom team has made some progress with image processing already.
https://twitter.com/ApertusOSCinema/status/674172374376390656/photo/1?ref_src=twsrc%5Etfw

No samples available yet.  I am highly interested in the results.
#3
General Chat / Re: Apertus Axiom Beta
December 07, 2015, 12:20:13 AM
No I don't think you are.  I didn't realize you were looking for shots with FPN specifically.  I just see some nasty looking color noise in the dark shadows (waves and rocks).

Here are some DNG's that defiantly have FPN.  Their from the Ursa mini but the 4k version that by all accounts has the cmv12000 chip.

https://drive.google.com/folderview?id=0ByDzUJpFXhFjS0RTZ2F0eUhtcFE&usp=sharing
#5
General Chat / Re: Apertus Axiom Beta
December 06, 2015, 09:06:38 AM
A1ex, thanks for your answers. 

I must have missed your tweaked DNG's the first time around.  Much improved, and way better then what I got myself.   

Here is a link to BMPC footage.  Hope it helps.  While significantly better then anything we've seen from the beta its still seems pretty noisy.  I suppose that sort low backlit scene would be pretty noisy with a fair number of cameras.

https://mega.nz/#!FJpBzRZK!7gcUhMcmivnpsgIisyO_-oPufMYSVYzw13OBykd1Cec

Bm rates the 4k production camera at 12 stops usable is probably around 8, which is gh2 territory.  Hopefully the beta can do better.  It will have different processing, and maybe some of the magic sauce A1ex mentioned in the beginning of this thread works and it can at least get up to canon level.
#6
General Chat / Re: Apertus Axiom Beta
December 04, 2015, 05:30:41 PM
Quote from: Kharak on December 04, 2015, 11:21:48 AM
Aren't they way behind on schedule?
I don't know exactly how much, but yes they are.   To be fair some delays were expected and they added extra functionality/flexibility in the hardware.

First sequences from the prototype with finalized hardware are up (minus full bandwidth sensor board with fpga).  You can see them in the latest update video.
https://www.youtube.com/watch?v=izDzFov3nDM&feature=youtu.be

You can also download one clip as a 4096x1080 12bit DNG sequence: http://files.apertus.org/AXIOM-Beta/coffee_4K_raw_highspeed_burst.zip

My layman's impression (ignoring some of the artifacts that will be addressed) is the image detail is great, though that might be expected from 12bit raw in a studio, However the FPN ruins the experience (its not yet corrected).  The footage can be pushed quite a bit.  I found a few looks I liked with it.

My question for @a1ex , Sebastian or anyone else who knows their shit is:  How much of the FPN can usually be corrected?  Is the betas implementation likely to offer the same noise performance as BMPC or AJA cion, where FPN rears its ugly head at iso800 and above, or can this be improved upon? Also does the original assessment of DR hold true with the new footage.

Back when I purchased my voucher I was hoping this would be an alternative to other high fps cams I could never afford, and as a huge fan of Ptools and ML it seemed like a natural fit.  Since, my work has evolved in the year+ since the campaign and I now have a FS700, another $2k for just a fun project seems excessive.  Given the footage from the BMPC and Cion its hard to see the Beta w/ cmv1200 touch the FS700 in sensitivity and DR (or even really match it).  Plus in its current form you can't record from it without a pc. 

I would like to see internal rec to SD, or an output that works with available external recorders.  I would like to see the full sensor readout with a usable duration: 5-10sec.

I really wan't this cam to work out, and put more control in my hands then I've ever had before.  I would like to continue to support the Axiom team, I think its great what they are doing and have eagerly awaited each update.   However I can't justify spending that kind of money unless I can get great images from it and have started to worry that the camera might not be for me.