FCAM thing in a nutshell for non-developers... - Page 2 - maemo.org

ossipena | # 11 | 2010-07-22, 15:03 | Report

well, with what settings are you viewing the dng?

because dng isn't a picture, it is raw data from sensor that has to be converted to picture in order to view it. i am betting on conversion settings.

Crugath | # 12 | 2010-07-22, 15:09 | Report

Default settings, it doesn't seem to store anything on White Balance. I set WB to 6400k in Fcamera and then viewed it in Bridge and the same problem occured. If you set the White Balance sliders to the extreme right in Camera Raw you can get it almost correct but the sliders don't slide quite far enough...

This is the closest I can get it with a temperature of 50,000 and tint of +150

http://the-buccaneer.co.uk/image_edi...1279811361.jpg

Switch_ | # 13 | 2010-07-22, 15:18 | Report

I've got exactly the same problem, using Ps CS3 - heavy Cyan tinting on all the *.dng's. As you described above, I can't quite slide the adjusters far enough to remove the tint.

Thought it might be the case that I didn't have the fcam drivers installed, but then recalled that I went root and used the apt-get install command to ensure all dependencies were present....

Strange that the app writes to an Adove format and yet when opened in an Adobe application it all goes a bit..... Well...... Tits up?

Last edited by Switch_; 2010-07-22 at 15:18. Reason: Spelling

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Crugath | # 14 | 2010-07-22, 15:23 | Report

Originally Posted by Switch_ View Post

Strange that the app writes to an Adove format and yet when opened in an Adobe application it all goes a bit..... Well...... Tits up?

My thoughts exactly!!

Hopefully some clever coder can sort out storage of metadata in the DNG, as currently the only metadata that Bridge/Photoshop reads from the DNGs are aperture and shutter speed, everything else is left blank with regards to camera settings when the image was captured.

I'd love to help code and sort this out, but I only know PHP, mySQL and Actionscript 3

EDIT: Rather than double post, I thought I'd add to this one. I made a post over on the garage page for FCamera and the devs say they also have this problem and are currently working on it!

HOORAY

I can't wait for the next version to get released!

Last edited by Crugath; 2010-07-22 at 23:03.

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abadams | # 15 | 2010-07-22, 23:51 | Report

Found the bug. We were casting a possibly-negative floating point value to an unsigned integer, so the color matrices stored in the DNG files (required to correctly interpret the raw data) went well.... tits up, as switch puts it.

We've got it fixed and checked into extras-devel. We're making sure we didn't break anything else and then we'll promote it to extras-testing and it should appear as an update in app manager.

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ericube | # 16 | 2010-07-22, 23:58 | Report

Originally Posted by Crugath View Post

This is working great, I'll show some sample images in a bit. But I'm having trouble with the DNG images that are saved by FCamera.

The DNGs have a really heavy cyan tint on them when I view them in Adobe Bridge, which is not removable no matter what settings I use in Camera Raw. This is Adobe CS5 btw.

When I try to view them in Irfan View they display as a red garbled mess.

When I check the option to save as JPG as well, these images save absolutely fine.

Anyone got any ideas why the DNGs don't display properly on the PC?

Here's an HDR image I made earlier, merged in Photoshop CS5. http://the-buccaneer.co.uk/image_edi...1279809203.jpg

EDIT:

Here's a photo captured in FCamera - This is the automatic JPG exported image http://the-buccaneer.co.uk/image_edi...1279809705.jpg

And this is the same image but the DNG generated by FCamera as seen in Adobe Photoshop CS5 http://the-buccaneer.co.uk/image_edi...1279809766.jpg

I've got the exactlly same problem as yours mate, it's quite strange, ]http://the-buccaneer.co.uk/image_editor/images/Crugath/1279809766.jpg this one is same as what I've got for preview on my Mac through CameraRaw when I open the DNG with PS CS4

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Deaconclgi | # 17 | 2010-07-23, 06:30 | Report

Here is a great article and video about the Fcam project.

http://www.physorg.com/news199011645.html

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Switch_ | # 18 | 2010-07-23, 06:51 | Report

Originally Posted by abadams View Post

Found the bug. We were casting a possibly-negative floating point value to an unsigned integer, so the color matrices stored in the DNG files (required to correctly interpret the raw data) went well.... tits up, as switch puts it..

Awesome - thanks for digging into the problem so quickly - those damn negative floating point values and unsigned integers, always causing trouble of some description!

Apologies for the use of adjective too but when blessed with only a limited vocabulary and the eloquence of an ape, "tits up" is deemed to be a fair descriptor.....

fms | # 19 | 2010-07-23, 07:07 | Report

Anyone else noticed that after installing FCam, the screen flashes green every time it rotates?

aligatro | # 20 | 2010-07-23, 07:08 | Report

How do we make a panorama using fcam ? Or you only offer api for this feature ?