Magic Lantern Forum

Developing Magic Lantern => Scripting Corner => Topic started by: garry23 on August 27, 2020, 11:52:50 AM

Title: Focus feedback for Photographers and Videographers
Post by: garry23 on August 27, 2020, 11:52:50 AM

NOTE: DOFIS only runs with the Lua fix build, or another build using the Lua fix module.

I've decided to publish the latest version of DOFIS as a different post to the previous version, as the latest version has been tweaked for use by photographers and videographers.

Simply, DOFIS is the only focus tool you need to use.

You can read about DOFIS and download the script here: http://photography.grayheron.net/2020/08/dofis-just-gets-better-and-better.html

As usual I welcome feedback on DOFIS.
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on August 28, 2020, 03:16:47 PM
As you will see in this post (http://photography.grayheron.net/2020/08/dofis-now-diffraction-aware.html) I decided to add in a diffraction aware feature into DOFIS.

Enjoy!
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on August 30, 2020, 11:01:32 AM
Things are moving on apace with DOFIS and I hope this latest update is of interest/value to some:

http://photography.grayheron.net/2020/08/dofis-update.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on August 31, 2020, 03:39:06 PM
In this post I show how you can register your own lens in DOFIS: http://photography.grayheron.net/2020/08/dofis-registering-lens.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 02, 2020, 03:11:06 PM
In this post I show how to use DOFIS to achieve perfect focus bracketing.

Plus the DOFIS UI has been updated to seamlessly integrate with the ML LV bars (so make sure you download the latest version from the link below).

http://photography.grayheron.net/2020/09/dofis-perfect-focus-bracketing.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 03, 2020, 03:49:41 PM
In this post I'm pleased to introduce an auto focus bracketing feature into DOFIS.

Enjoy!

http://photography.grayheron.net/2020/09/dofis-auto-bracketing-mode.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 04, 2020, 01:50:04 PM
Another day: another bit of the DOFIS story unfolds  :)

http://photography.grayheron.net/2020/09/dofis-tidying-up-things.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 06, 2020, 09:20:05 AM
Although the main topic recently has been the R5/R6 developments, I've been plugging on making DOFIS the focus tool that everyone should have running on their camera: for photography or videography.

This latest release now allows DOFIS to be used with ML advanced bracketing.

http://photography.grayheron.net/2020/09/dofis-now-works-with-ml-advanced.html

As usual I welcome any feedback on DOFIS, especially ideas to make it better.

REMEMBER: DOFIS has been written using the Lua experimental fix build. Make sure you are using that build or the Lua module from it.
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 06, 2020, 03:43:56 PM
A few words on DOFIS and the EOSM: http://photography.grayheron.net/2020/09/dofis-eosm.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 06, 2020, 04:33:55 PM
As some of the photographers may be interested, I've just updated my last blog post with an 11 shot, focused stacked, IR image, taken with the help of DOFIS: http://photography.grayheron.net/2020/09/dofis-eosm.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 09, 2020, 03:06:33 PM
Just a update directed at refactoring and stabilising the code, ie no functionality change.

http://photography.grayheron.net/2020/09/dofis-bit-of-refactoring.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 10, 2020, 02:20:33 PM
Just for the landscape photographers  :)

http://photography.grayheron.net/2020/09/dofis-now-helping-landscape.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 18, 2020, 03:36:44 PM
Another uplift for my DOFIS script. This time addressing a couple of 'limitations' in ML Lua: around the RAW Spotmeter and ML Advanced Bracketing.

The latest version now allows semi-auto exposure bracketing in all auto focus bracketing modes, as well as when no focus bracketing has been selected.

The DOFIS exposure bracketing is based on 'only' telling DOFIS the ML spotmeter reading in the shadow region, after carrying out an ML ETTR.

http://photography.grayheron.net/2020/09/dofis-auto-perfect-focus-and-exposure.html

As usual I welcome any feedback on DOFIS, although I accept I may be the only lucky person using the script  :) ;)
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 19, 2020, 05:20:15 PM
This post should be of interest to those photographers seeking out a 32 bit based workflow, when undertaking deep focus and high DR capture, ie beyond what a single image can achieve, even with Dual-ISO  ;)

http://photography.grayheron.net/2020/09/dofis-indoor-test-of-32-bit-focus-and.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 20, 2020, 10:01:43 AM
A quick post for the photographers, especially those seeking to get more out of your post processing:

http://photography.grayheron.net/2020/09/dofis-dual-iso-16-bit-floating-point.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 23, 2020, 04:01:47 PM
This post shows how DOFIS helps with virtual Medium Format photography:

http://photography.grayheron.net/2020/09/dofis-and-pseudo-medium-format.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on September 26, 2020, 02:35:38 PM
In this post I cover the model for next major uplift to DOFIS, which will account for lens asymmetry, ie to cover the macro and pano photographers:

http://photography.grayheron.net/2020/09/dofis-start-of-major-update.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 05, 2020, 04:10:20 PM
'Finally', as promised, here is the latest version of DOFIS, that now uses an asymmetric, split lens model.

This latest version gives the correct field of views (horizontally, vertically and diagonally) as the lens changes focus, ie fully modelling lens breathing.

It also 'correctly' estimates DoFs from macro to the deep far field, although DOFIS only reports relative DoFs greater than a mm ;)

For the pano photographers, DOFIS now estimates the position of the pano pivot point, ie relative to the sensor.

The latest post and info on DOFIS may be read here: http://photography.grayheron.net/2020/10/dofis-now-supports-macro-and-pano.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 07, 2020, 05:30:03 PM
Another little bit of the DOFIS story. This post with generic value to those seeking perfect panos.

http://photography.grayheron.net/2020/10/perfect-panos-and-no-parallax-point.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 09, 2020, 12:03:28 PM
More insight for the photographers using DOFIS: http://photography.grayheron.net/2020/10/more-on-pano-pivot-point.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 10, 2020, 12:54:18 PM
More fun with ML and DOFIS. This time perfect '3 degree of freedom' bracketing: exposure, focus and composition:

http://photography.grayheron.net/2020/10/dofis-exposure-focus-and-pano-bracketing.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 11, 2020, 03:15:08 PM
Some background stuff to help with DOFIS, ie find the pupil magnification of a lens: http://photography.grayheron.net/2020/10/a-poor-mans-optical-bench.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 12, 2020, 06:22:36 PM
Another short post for pano photographers.

http://photography.grayheron.net/2020/10/why-pano-shooters-should-stop-down.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 19, 2020, 05:51:13 PM
I'm pleased to announce that DOFIS now fully supports the macro shooter: http://photography.grayheron.net/2020/10/dofis-now-for-macro-shooters.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 26, 2020, 01:44:24 PM
Not strictly DOFIS related, although this post uses the DOFIS model to give some rules of thumb to photographers seeking to get the most out of hyperfocal focusing: http://photography.grayheron.net/2020/10/the-hyperfocal-distance-understanding.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 27, 2020, 04:11:25 PM
I've now added in a figure of merit feedback to give an appreciation of resolution loss as one focuses and stops down the aperture:

http://photography.grayheron.net/2020/10/dofis-resolution-figure-of-merit.html
Title: Re: Focus feedback for Photographers and Videographers
Post by: garry23 on October 29, 2020, 10:34:51 AM
Just uploaded a new version of DOFIS that: tidies up the code a bit; adds additional comments to help people understand what the code is doing; ensures DOFIS 'respects' the ML AB settings when exposure bracketing; and uses a more refined sensor+diffraction resolution model.

http://photography.grayheron.net/2020/10/dofis-resolution-fom-tweak.html

As usual I welcome feedback or questions, ie here or via a PM.