Re: [Elphel-support] starting an article...

Hi Andrey, > > We are getting closer to be able to offer higher quality and > calibrated sensor front ends with fixed f=4.5mm F1.8 M12 lenses, same > as we are using now in Eyesis cameras. We are also working with lens > manufacturers on developing lenses (smaller pixel size) suitable for > the ne

Re: [Elphel-support] starting an article...

Eric, We are using the Elphel on a drone, so the size of the lens (and its > weigth) is also important for us. > This lens I'm using is quite heavy. In our setup, Elphel is being hold upside down by the lens, not otherwise. =) > In your settings, did you change "Autoexposure control" ? > Good

Re: [Elphel-support] starting an article...

Hello Eric, We are getting closer to be able to offer higher quality and calibrated sensor front ends with fixed f=4.5mm F1.8 M12 lenses, same as we are using now in Eyesis cameras. We are also working with lens manufacturers on developing lenses (smaller pixel size) suitable for the next sensors

Re: [Elphel-support] starting an article...

Hi Eric, > The image is quite dark even by bright sun. What exposure times do you get with the computar lens? And you need shorter, right? Could you post an example? > I saw on Apertus web site a lot of lens for Elphel, but are > there some lens that more appropriate to the Elphel's sensor ?

Re: [Elphel-support] starting an article...

Flavio, > I've uploaded the videos, finally. They will give you a better idea of > the image with the lens: > > http://florestavermelha.org/2012/08/17/gravacoes-de-teste-os-videos/ Thanks for the video. I have a better idea now. I need another lens ;) We are using the Elphel on a drone, so the s

Re: [Elphel-support] starting an article...

Hi Oleg Exposure time is 31890 ms. FOV depends on what I need (1920*1080). I should upload video we made with the drone. I have to buy a better lens for better result. Regards. Éric Boudrand Le vendredi 17 août 2012 à 17:19 +0400, Oleg a écrit : > Hi Eric, > > The image is quite dark

Re: [Elphel-support] starting an article...

Hi Flavio, > About the lens, I'll tell you the little I've known so far. The most > important thing to know is the size of the sensor (in actual terms, it > is considered 1/2.5") and the mount. In theory, any C-mount lens made > for old movies (especially Super 8 or 8mm that have the film area > c

Re: [Elphel-support] starting an article...

Eric, everyone, I've uploaded the videos, finally. They will give you a better idea of the image with the lens: http://florestavermelha.org/2012/08/17/gravacoes-de-teste-os-videos/ Cheers, flavio _

Re: [Elphel-support] starting an article...

Hi, Eric, Thanks for the compliments! About the lens, I'll tell you the little I've known so far. The most important thing to know is the size of the sensor (in actual terms, it is considered 1/2.5") and the mount. In theory, any C-mount lens made for old movies (especially Super 8 or 8mm that ha

Re: [Elphel-support] starting an article...

Hello Flavio, Thanks for this article. It is very useful (like the previous one). Is there lens more suitable for Elphel camera ? I am using a cheap Computar lens I am not very satisfy of. The image is quite dark even by bright sun. I saw on Apertus web site a lot of lens for Elphel, but are ther

Re: [Elphel-support] starting an article...

Hello, everyone, In the beginning of June, I had sent an e-mail talking about an article I was starting to write. Well, now it is nearly finished - there is the last part, talking about audio recording, but this research will only be done in a couple of months. The article is called "A somewhat c

Re: [Elphel-support] starting an article...

Hi guys, Thanks for the feedback. I'll see if I can update the text this week, based on your observations. I'll also write the part concerning "elphel keeps disconnecting - how to fix it". I found out what my problem was and it was different from Carlos'. In my case, wicd and network-manager woul

Re: [Elphel-support] starting an article...

Hi flavio Great read! Some feedback: -) "the BPP of the image decreases drastically in the region between 95-100%" -> actually we are used to reading from left to right so the value actually "increases" instead of "decreases". -) You mostly talk about JPEG quality percentages in the article, t

Re: [Elphel-support] starting an article...

Hi Flavio, Nice work! I would recommend you to play with coring settings in addition to JPEG quality - it may provide some better efficiency in image size- quality trade-offs. This is one of the articles about coring that has some illustrations: http://downloads.hindawi.com/journals/ivp/2010/32318

[Elphel-support] starting an article...

(sorry, I sent this e-mail but forgot to change the thread. here it goes again, with the proper subject title): Hello, > > I have started writing an article called "A somewhat comprehensible guide > to using Elphel as a Digital Cinema camera". It's here: > https://szaszak.wordpress.com/linux/elphe