Hi Schuh, welcome to the lab!

and the formula from Alex: y = (1 - 1/(1+a*x)) / (1 - 1/(1+a)), x is input data in [0..1], a is exposure_gain - 1 (e.g. for 3 EV, a = 2^3-1 = 7)

Alex mentioned this as good reference from ML: http://www.magiclantern.fm/forum/index.php?topic=9597.msg99327#msg99327

The ALEXA LUT/EI method shifts the middle values while blacks/whites are untouched in contrast to the exposure compensation method which affects the entire range with a constant factor.

Technically speaking as I understand it those are two different things.

issue identified: http://php.net/manual/en/function.strtotime.php#107331

lol, damn these last days of the month... I will look into it :)

The variable ISO settings are not to do with digital or analogue gain - these both remain the same (to make sure DR is maximised at all times) rather they are to do with tone mapping.

ISO settings correspond to analog on-sensor gain. I know some manufacturers claim ISO to be a post processing digital gain only that is a non destructive operation, but that's not the case with the CMV12000.

The sensor does not do 300fps at maximum resolution.

I think the price would be in a similar area, pactec though does not offer this cardboard solid form pressing service.

But the cardboard is stiff and provides no protection to the camera...

What do you mean with "standard piece"?

Interesting idea! I am a bit concerned about protection as the towel would need to fill out the entire packaging box otherwise it will together with the camera be thrown around inside the package when it travels the world. Also we will have a few more accessories in the package that could scratch each other... Also it might look weird when you open the package and there is everything piles together in a towel inside :)

If its the touch controller you are interested in with the flow controller why not use a smartphone instead?

Met a very nice representative from pactec.at

Ah thanks for bringing this a task to the lab, yes we discussed it with Alex and it seems to have a very high potential for increasing dynamic range and reducing noise.

I wouldn't call it simple as we have to implement a completely different debayering algorithm but its technically possible.

As per sensor datasheet you can specify to skip lines, not columns.

thanks for the feedback, we will head for the long lasting clicky ones that feel good then :)

Evaluation Summary:

The Elphel PHP is a great reference here: http://wiki.elphel.com/index.php?title=PHP_in_Elphel_cameras

Was the problem the lacking grounding of the HDMI connector metal then or why did the Alpha reboot when a cable was plugged in?

TSW B series CK Components:
http://www.mouser.at/ProductDetail/CK-Components/TSW-B-3N-C-LFS/?qs=%2fha2pyFadujraIHk8Hz88Reg34nP4pOfCbnVP6ypE%252b%2fElbU%252bNyR7Mw%3d%3d
http://www.ck-components.com/tsw/navigation,59751,en.html
http://www.digikey.com/catalog/en/partgroup/tsw-series/9116

Or in the other direction of a throw away solution we could shred old newspaper, mix it with water and build our own papier mâché press that just pushes the material into a CNC milled mold form and squeezes the water out. Leave it a day to dry and we have a 100% paper packaging form that can be recycled again.

emailed http://www.pactec.at/kontakt/

Thanks, we will keep that in mind :)

now that we have the lab I dont think we need them on the mailing list as well.

Maybe this post by Alex from ML can shed some light: https://groups.google.com/forum/#!topic/ml-devel/3qTOXhj5FA8

We are in touch with Christophe and just purchased this board from him.

summary from talking to a VFX guy specialized in motion capture and studio real time camera tracking:

our website CMS already provides all the technical requirements for a multi language page,
This task is more related to managing the people to create the translated content and organizing efforts for a larger translation team.

I imagine it would be easier to show Zebra areas as blocks of a single colour. Then all you'd need to do is identify any pixels whose luma values fall within a selected range and change them to the selected colour.
Additional 'zebra patterns' could then be added with different colours. So you have one set of values represented by, for example dark purple (deep shadow) and another set by red (white clip).

Lets first create a usage scenario list how the 3 outputs might be used (even the wild configurations):

In T233#3449, @Bertl wrote:

Adding a complete image path/feature cross-switch would be possible but very expensive FPGA resource wise, so I would prefer to select in advance which path can apply what features.

For example, if we dedicate one output for recording, that this output shouldn't have to handle any features or overlays.

fixed

good discovery :)

from magic lantern (http://wiki.magiclantern.fm/userguide):

This website I consider a very nice reference for good readbility and typography: http://www.pcgames.de/Special-Thema-215651/Specials/Die-Psycho-Tricks-der-Spiele-Designer-Das-Spiel-in-deinem-Kopf-1144707/

I managed to solve the errors and started adapting the WIP theme at:

turns out the problem was that strtotime (currentdatetime - 1 month); on the last day of the month generated a time that is exactly the first second of the current month because the server timezone is not UTC (30th november 23:00 GMT) from today 31st of december) so I now subtract 1 second from the result and everything is working as expected again :)

very strange indeed, will look into it right away

I cloned our current theme apertus_bootstrap and renamed it apertus_bootstrap_2015 and added the theme switcher block to the sidebar for admins.

So from my research:

might be a compile issue that its not there currently, please check

In T233#3329, @Bertl wrote:

For me it would make most sense to check each channel in the raw bayer data for over/under a certain threshold (which could be different/weighted) as the main idea is to prevent information loss from clipping, no?

There might be ways to simplify/optimize the processing, after all we just need a rough helper indicator here not a scientific tool.

thinking about it now it might also make sense to add "dot size" as parameter as most monitors with lower than FullHD resolution might not be able to display dots of 1 pixel size properly

stripe color/direction added to parameter list.

Would be great if we could find someone interested in testing this on the Alpha!

Magic lantern implementation:
https://bitbucket.org/hudson/magic-lantern/src/a27e3b9df491d1bfa2cba70def5fb873486980e1/src/zebra-5dc.c?at=unified#cl-1062

Here is a great reference: http://www.luminous-landscape.com/forum/index.php?topic=56246.0

indiegogo does not provide any such tools

We plan to do a video update to post to crowd funding backers exactly for this purpose soon.

How many Nikon lenses do you regularly use for filmmaking that only have electronic aperture control?

the concept changed already

We ordered a http://www.atum3d.com/ SLA based 3d printer last week.

if anybody has ideas, convince me :)

taking over task to think about what we could use it for and if we should be getting one of these "flows" :)

@sebastian: maybe, it would for sure put a certain load on the memory controller (limited resource) and probably reading every 8th pixel would also give a very strange preview while not really reducing the memory load that much (access is 64-128bit).