Recent posts

#1
Raw Video Postprocessing / Re: MLV App 1.14 - All in one ...
Last post by Danne - Today at 11:29:23 AM
Could you test exporting to dang also with this app?
https://bitbucket.org/Dannephoto/switch_mini-git/downloads/Switch_mini.dmg

There are a few different codebases out there with vertical stripes correction, not all is working perfect
#2
Experiencing wired behavior with Vertical Stripes on 5D3 with Danne's anamorphic 1x3 preset (FWIW, running asintes' 2023Sep01 build for 1.23).

Low-light scene with ISO 1600, exporting to DNG and grading in DVR, I get

  • Vertical Stripes = Off => no evident stripes
  • Vertical Stripes = Normal [which is default setting btw] => slightly darker stripes appear
  • Vertical Stripes = Force => ok, same as with Off

Re-tested with Dark Frame subtraction enabled => same results.

Just wondering if there is some known reason for this.
#3
Forum and Website / Re: New server - Please report...
Last post by Walter Schulz - Today at 08:45:03 AM
[nagging]Wiki still offline[/nagging]
#4
Quote from: names_are_hard on Today at 06:28:34 AMDo you have rst2html in path?

Yes, I do:

$ which rst2html
/usr/bin/rst2html
#5
Do you have rst2html in path?
#6
Quote from: names_are_hard on Today at 05:58:00 AMYou will get an error around missing module_strings.h if you don't have rst2html in path.  On a debian based distro you can install this via:

apt install python3-docutils

Thanks for prompt response.

I have the python3-docutils installed, but still get the error as follows:

cr2hdr.c:58:10: fatal error: module_strings.h: No such file or directory
   58 | #include "module_strings.h"
#7
Raw Video / Re: Lot of grain and noise in ...
Last post by zenny - Today at 06:17:52 AM
Quote from: gabriielangel on Yesterday at 05:53:18 PM@Zenny, If you want to avoid having a darker image than the camera can handle cleanly, you can use the false colors to help expose properly. This is not a Sony which can record cleanly at ISO 800! Have a look at this image (Click for the animation) The whole white portion was exposed so that it showed the corresponding False Color.

You see that at ISO 100, you can expose above Dark Grey (Charcoal) and have a relatively clean image, but as you bump up ISO, you must expose more to have a noise-free image.
At ISO 200, the noise starts being quite noticeable below Orange and at ISO 400, you need to be above Orange.
Looking at the images you posted, my guess is that most of the frame was exposed around the Cyan region, which is quite noisy.
To get the cleanest image possible, most of the frame should be exposed above the point where noise starts becoming noticeable.

Also, if you want small details like the tree branches in your images to come out sharp, you need to avoid using the 1x3 modes, as those make small details "Mushy".

@iaburn's advice is one to follow. If you need more light, you can use a tripod and use a slower shutter speed, so that you can keep the lenses at smaller apertures for more sharpness.

I did 2 posts on false colors / exposure vs noise here if you're interested:
https://www.magiclantern.fm/forum/index.php?msg=245760
https://www.magiclantern.fm/forum/index.php?msg=245761

@gabriielangel This is extremely helpful input. Very enlightening posts on false colors and exposures. 1x1 does not give 4.8K I guess.

Usually I do not go for beyond ISO400 except using dual ISO of ISO100/800. My shutter speed is usually 1/50 for video and variable for photography. I usually try to achieve deep focus and set my aperture to f/8-11 and use a wide lens 10mm to 28mm max, fyi.

Cheers,
/z
#8
You will get an error around missing module_strings.h if you don't have rst2html in path.  On a debian based distro you can install this via:

apt install python3-docutils
#9
Quote from: names_are_hard on Today at 04:01:28 AMDon't be surprised if someone tells you how to find MLVApp for Linux, if you say you can't find that ;)

Assuming you're using a modern linux, to get cr2hdr I would recommend you do this:
git clone https://github.com/reticulatedpines/magiclantern_simplified
cd magiclantern_simplified/modules/dual_iso
make cr2hdr

Thanks for the input. I tried to do accordingly, but I am not aware of the list of libraries (32-bit?) that fails the compilation, particularly module_strings.h is not found anywhere in any library!

I appreciate if you share particular libraries required to compile and build.

Cheers,
/z
#10
Don't be surprised if someone tells you how to find MLVApp for Linux, if you say you can't find that ;)

Assuming you're using a modern linux, to get cr2hdr I would recommend you do this:
git clone https://github.com/reticulatedpines/magiclantern_simplified
cd magiclantern_simplified/modules/dual_iso
make cr2hdr