Author Topic: Focus feedback for Photographers and Videographers  (Read 6612 times)

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #25 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

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #26 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.

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #27 on: November 18, 2020, 03:58:30 PM »
Just added an additional feature for the tilt lens users: http://photography.grayheron.net/2020/11/dofis-tilt-calculator.html

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #28 on: November 20, 2020, 12:59:26 PM »

garry23

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garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #30 on: February 12, 2021, 05:40:01 PM »
I'm pleased to release the 2021 version of DOFIS, that now provides focus information, eg infinity focusing and focus bracketing, outside of LV; so you can use your viewfinder and get focus info.

https://photography.grayheron.net/2021/02/dofis-2021-uplift.html

The DOFIS info is accessible via the Quick Shooting screen.

NOTE: as usual I've only been able to test this release of DOFIS, designed for non-mirrorless ML cameras, on my 5D3.

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #31 on: February 14, 2021, 11:28:27 AM »

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #32 on: February 16, 2021, 12:37:43 PM »
Something for the landscape photographer in this post, which includes another minor tweak to DOFIS:

https://photography.grayheron.net/2021/02/a-few-thoughts-for-landscape.html


garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #33 on: March 01, 2021, 05:55:23 PM »
A minor tweak to DOFIS to allow you to select a visible band or IR band diffraction model.

This means I can switch diffraction models according to how I am using my Full Spectrum EOSM, eg with or without an IR filter.

https://photography.grayheron.net/2021/03/dofis-now-full-spectrun-friendly.html

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #34 on: March 08, 2021, 05:39:42 PM »
I'm pleased to release the latest DOFIS uplift, which you can read about here: https://photography.grayheron.net/2021/03/dofis-traffic-light-augmented.html

This release adds a 'Traffic Light' feature that greatly improves the speed of manually capturing focus brackets.

The post includes a video showing the feature being used.

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #35 on: March 10, 2021, 04:53:55 PM »
Another tweak and a few words on focus overlap estimation.

https://photography.grayheron.net/2021/03/for-those-that-like-equations.html

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #36 on: March 20, 2021, 07:40:43 AM »
Not strictly an ML post, but it is related as this post is a demo of the DOFIS model running on a CHDK M3 and showing how I use Helicon Focus for landscape, deep focus bracketing.

https://photography.grayheron.net/2021/03/helicon-focus-deep-focus-photography.html


garry23

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Sky Bracketing in DOFIS
« Reply #37 on: March 24, 2021, 02:40:56 PM »
I thought some may be interested in my new DOFIS Sky Bracketing feature, that works with auto focus bracketing.

https://photography.grayheron.net/2021/03/dofis-sky-bracketing.html

whitelight

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Re: Focus feedback for Photographers and Videographers
« Reply #38 on: March 25, 2021, 07:46:39 AM »
This looks very interesting, especially for real estate work. Great job.

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #39 on: March 25, 2021, 09:19:00 AM »
@whitelight

Yes, I’ve used it for internal shots and, as you say, ie looking out of a window. It looks as if it might be useful IF you also need to focus bracketing indoors. The sky bracket can be set between 2-6 Ev, ie relative to the rest of the scene.

An alternative approach, using DOFIS, is to use Dual-ISO when auto focus bracketing, ie without the sky bracket, but having ETTRed for the scene. But here you are limited to less than a 3Ev lift for the shadows.

Another approach is to use ML’s advance bracketing, together with DOFIS’s manual focus bracketing traffic light feature.

Bottom line: I have tried to craft DOFIS as a versatile focus tool for all photographers and videographers, ie who want to have more control and info on focus.

garry23

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Infinity Bracketing in DOFIS
« Reply #40 on: March 26, 2021, 11:37:54 AM »

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #41 on: April 03, 2021, 07:09:34 PM »
A short post on DOFIS’s sister script that runs on the M3, albeit under a CHDK environment.

The post includes a video of the deep focus and infinity focus script running.

The CHDK environment drives the EF-M lenses rather well.

https://photography.grayheron.net/2021/04/m3-brackets-release-2.html

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #42 on: April 10, 2021, 11:22:38 PM »
I thought some may be interested in my latest post on the Canon M3 deep focus bracketing Lua script.

As you will see, I’ve taken a UI steer from ML  ;)

https://photography.grayheron.net/2021/04/m3-brackets-change-to-ui.html

BTW I really miss ML Lua, ie I have to muck about with 32bit integer math limitations over in CHDK land  >:(

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #43 on: April 14, 2021, 06:04:09 PM »
Once again, a background link to my CHDK script that runs on the M3, because both the ML and CHDK deep focus bracketing scripts use the thick lens DOFIS model, which also accounts for pupil magnification:

https://photography.grayheron.net/2021/04/m3-bracketing-now-with-manual-focus.html

I have tried to keep ML DOFIS and CHDK M3 Bracketing scripts aligned, at least functionally.

ML700D

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Re: Focus feedback for Photographers and Videographers
« Reply #44 on: April 26, 2021, 08:00:28 PM »
very interesting..

how to use in 700D? my ML build is bilal's crop rec 4k

thanks a lot!  :D

Walter Schulz

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Re: Focus feedback for Photographers and Videographers
« Reply #45 on: April 26, 2021, 08:16:19 PM »
The same way it is used in all compatible builds: Copy *.lua to ML\Scripts and activate LUA.mo.
If the scripts don't work builds are not compatible. They require LUA support implemented in lua_fix builds.
Either prepare a spare card with lua_fix build or juggle with ML directory and autoexec.bin renaming. Take your pick.

garry23

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Re: Focus feedback for Photographers and Videographers
« Reply #46 on: April 26, 2021, 10:02:42 PM »
Thanks Walter, I couldn’t have said it better myself  ;) :) :D

Walter Schulz

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Re: Focus feedback for Photographers and Videographers
« Reply #47 on: April 26, 2021, 11:10:43 PM »
And another FAQ entry pending ...

ML700D

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Re: Focus feedback for Photographers and Videographers
« Reply #48 on: April 27, 2021, 04:30:07 AM »
The same way it is used in all compatible builds: Copy *.lua to ML\Scripts and activate LUA.mo.
If the scripts don't work builds are not compatible. They require LUA support implemented in lua_fix builds.
Either prepare a spare card with lua_fix build or juggle with ML directory and autoexec.bin renaming. Take your pick.

oh.. ok thanks.
I will try it..