The Digital Video Information Network - Apertus: Open Source Cinema Project http://www.dvinfo.net/forum/ en Sat, 21 Nov 2009 08:07:24 GMT vBulletin 60 http://www.dvinfo.net/forum/images/misc/rss.jpg The Digital Video Information Network - Apertus: Open Source Cinema Project http://www.dvinfo.net/forum/ Which hardware controls ? http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466982-hardware-controls.html Mon, 02 Nov 2009 15:57:33 GMT Just found this :
http://www.athalys.com/documents/news/redmote.jpg

It's the new red remote. It looks like a beagle board on steroid to me.

We discussed about it as it is very similar to the dictator controller developed by Sebastian for the Apertus project.

- it seems they don't display the live picture on it, only an histogram and the parameters.
- the "dial wheel" is very nice and could be used as well. Sebastian showed us http://www.hardwarezone.com/img/data...le/hand2_l.jpg
- Alexandre talked about "Sparkfun" which is full of nice stuff such as:
SparkFun Electronics - Thumb Slide Joystick
- it's easy to build a custom board using beagleboard, arduino or armduino (such as Bugblat Cortino ) ...
- Sebastian actually already have this for the dictator: SparkFun Electronics - Thumb Joystick
- I then proposed to used real analog potentiometers : they have an absolute position
so you can quickly check where you are on the scale, and they give the best feeling imho Freewheels makes you check on the screen in order to see where you are. Also, potentiometers are very cheap and can be connected to an analog input.

Discussing the analog potentiometer option a bit further, imagine something like this :
http://www.m-audio.com/images/global...ers__v2008.jpg

Imagine in the field, you want to quickly check your sound level, or the exposure or shutter speed. You simply look at the knobs and you know how many stops or db or whatever are left. Also, it's a simple way to keep your settings always the same. Don't turn the know and the settings do not change. Most camera handle audio and exposure like
this.

For example, on the Z1, here is the audio section :
http://reglage.camescope.free.fr/Son...me%20audio.jpg

You can quickly see how much "room" is left audio wise. You can also see on the picture that the knobs are protected by a transparent cover to avoid unexpected changes.

Details like this make it easier to use a tool in the field when you sometimes don't have the time to look at the settings on a screen, when your eyes is already framing the shoot, you can only use the tactile feeling of your fingers. In situation like this a knob with absolute positioning is great.

What do you think? ]]> Apertus: Open Source Cinema Project Philippe Jadin http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466982-hardware-controls.html Hardware, Hardware, Hardware http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466398-hardware-hardware-hardware.html Sat, 24 Oct 2009 22:38:14 GMT This thread is for all you gearheads out there. At the moment the project is seeking hardware designers, CAD modelers, or anyone with the means to fabricate parts. If you are interested or know anyone who might be interested in helping please make it known through email or the forums. We are in... This thread is for all you gearheads out there. At the moment the project is seeking hardware designers, CAD modelers, or anyone with the means to fabricate parts. If you are interested or know anyone who might be interested in helping please make it known through email or the forums.

We are in the process of drafting some new CAD models so there aren't any visuals to show. I have drawn out some diagrams that I will make in photoshop and post for you to see shortly. The camera will have a beagleboard and 8.9" LCD to run the ElphelVision software. If we have a 35mm sensor this is this:

mattebox + 35mm lens + follow focus + Elphel 373 camera + Beagleboard with a 2-4 input XLR mixer in a rail-mounted enclosure + rail-mounted arm with the viewfinder on it + a small shelf type thing with space for the battery and magazines (hard drives or SSDs)

The rail system would have handles and a shoulder mount.

This post is a work in progress, I will have a complete overview of what I am talking about very soon.

PARTS LIST:

Mattebox:
I have a feeling, since these are particularly costly hunks of metal, we will end up manufacturing our own for much cheaper. We desperately need someone with a CNC machine or a company that is willing to work with us during the prototyping stage to get some initial units manufactured for testing purposes.

Follow Focus:
We already have a source for the most important part of the follow focus, the gearbox. We will be using the one manufactured by Huco that is used by Redrock Micro in many of their follow focus products. Fortunately, we already have a tentative design for the follow focus so it is all set to go.

1024x600 8.9" Touchscreen LCD: I have contacted various manufacturers along with researching some off-the-shelf solutions. Right now the touchscreen solutions from 3M look very promising. They are getting back to me with pricing. ]]> Apertus: Open Source Cinema Project Jeremy Cimafonte http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466398-hardware-hardware-hardware.html 35mm Sensor Roundup http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466395-35mm-sensor-roundup.html Sat, 24 Oct 2009 21:18:43 GMT This post ties in with the current discussion on sensors however I feel there is a need to discuss 35mm sensors specifically. We are actively pursuing the possibility of a 35mm sensor. Here is where we are at: We need a 35mm sensor capable of a resolution equal to or above 2048x1088. It has to... This post ties in with the current discussion on sensors however I feel there is a need to discuss 35mm sensors specifically. We are actively pursuing the possibility of a 35mm sensor. Here is where we are at:

We need a 35mm sensor capable of a resolution equal to or above 2048x1088. It has to be global shutter or CCD. If its a CMOS it can use binning to decrease the resolution and increase the framerate. Interesting fact, if it is a CCD we can use a portion of the sensors active pixels (if it is a 3k sensor, we can use only 2k of the pixels) to increase the framerate. Sadly, this decreases the field of view. If it only has the field of view equivalent to, for instance, a 2/3" sensor than why might would we want to use it over a 2/3" sensor? Well, even if you are using just a portion of the 35mm sensor you would still get 35mm depth of field. Just something to think about.

The DALSA FTF3020C - Product Detail

Type: CCD
Resolution: 3072 x 2048 pixels
Notes:
If it could be overclocked to reach 24fps it would be a very worthwhile possibility. For weeks now I have been making occasional calls to DALSA trying to get in contact with someone qualified to answer my questions. The DALSA employee whom everyone agrees can answer my question is Brian. You can reach Brian at 519 886 6000. It would be a big help if someone could find out if the sensor is capable of 24fps at full resolution or at any resolution equal to or above 2048x1088.

The Sony "Exmor" CMOS - Sony Global - Technology - CMOS Sensor "Exmor"

Type: CMOS
Resolution: ?
This sensor was developed to be a high speed 35mm sensor. I am trying to get in contact with Sony to find out more information. I am trying to get in touch with Sony. If anyone interested would like to help please contact Sony and let us know what the maximum resolution at 24fps would be. This link might be helpful, it contains a phone number:Sony Global - Sony's CMOS Sensors

The Panavision Dynamax Sensor
Resolution: 5766x6492
Type: CMOS
This is the best looking sensor at the moment. Unfortunately, it is probably going to be the most expensive.

If anyone can help research these sensors it would be appreciated. If you have any further discussion relating to 35mm sensors please discuss it in this thread. ]]> Apertus: Open Source Cinema Project Jeremy Cimafonte http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466395-35mm-sensor-roundup.html ElphelVision User Interface http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466394-elphelvision-user-interface.html Sat, 24 Oct 2009 20:25:31 GMT Hello everyone! I have been working with Sebastian trying to do whatever I can to help the project along. There have been many new developments. We are trying to open up the discussions to the entire community. For now, the main interface for controlling the camera is the ElphelVision software.... Hello everyone! I have been working with Sebastian trying to do whatever I can to help the project along. There have been many new developments. We are trying to open up the discussions to the entire community.

For now, the main interface for controlling the camera is the ElphelVision software. There are probably going to be manual controls and a few other ways to manipulate the camera in the future. However, for now we are focusing on ElphelVision as the main interface for the camera. In terms of hardware, ElphelVision will be manipulated using an 8.9" multi-touch touchscreen display with a resolution of 1024x600 mounted onto the rails of the camera.

So folks, we are in the process of completely revamping ElphelVision in preparation for a major next release. I have been working on the interface and have a few mockups to show you. Right now I have only mocked up the main screen of the viewfinder. When I finish more I will post them. The images attached to this post are what I have completed so far. Please let me know what you think.
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]]> Apertus: Open Source Cinema Project Jeremy Cimafonte http://www.dvinfo.net/forum/apertus-open-source-cinema-project/466394-elphelvision-user-interface.html