Landscape Focus Bracketing Script - page 24 - Completed and Working Scripts - CHDK Forum
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Landscape Focus Bracketing Script

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Offline Caefix

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Re: Landscape Focus Bracketing Script
« Reply #230 on: 16 / August / 2021, 15:42:22 »
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Quote from: pigeonhill on 16 / August / 2021, 15:30:33
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... blur in microns.
Whenever I read this, I "see" a bug running up the tripod at long exposure...  :haha
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #231 on: 16 / August / 2021, 16:34:02 »
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Whenever I read this, I "see" a bug running up the tripod at long exposure...

As usual I have no idea what you are saying...sorry.
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #232 on: 30 / August / 2021, 12:27:14 »
I thought some may be interested in my latest M3 Landscape Bracketing Script feature: auto focus bracketing from the minimum focus distance to a set focus position.

Also, there are a few posts on my blog related to macro photography that some may wish to read.

https://photography.grayheron.net/2021/08/m3-landscape-bracketing-script-minimum.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #233 on: 20 / September / 2021, 11:38:44 »
Just a quick post to say I’ve brought the M3 version of my Landscape Bracketing Script into alignment with the non M3 version, in that the M3 script now includes simulated ND bracketing.

You can read about the latest version here:

https://photography.grayheron.net/2021/09/landscape-bracketing-script-m3-now-with.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #234 on: 15 / October / 2021, 11:34:05 »
I thought some, ie those lucky enough to have an M3 ;-), would be interested in the latest version of my M3 Landscape Bracketing Script.
The latest version now allows LE simulation, via ND number or time, and Super-Resolution simulated pixel shifting.
https://photography.grayheron.net/2021/10/m3-landscape-bracketing-script-now-with.html
« Last Edit: 15 / October / 2021, 12:27:08 by pigeonhill »
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #235 on: 19 / October / 2021, 10:11:50 »
A minor tweak to the UI and functionality that some may be interested in:

https://photography.grayheron.net/2021/10/m3-lbs-minor-update.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #236 on: 18 / April / 2022, 11:26:46 »
I thought some may be interested in the latest addition to my M3 Landscape Bracketing Script. which now includes 'optimised' handheld bracketing.
https://photography.grayheron.net/2022/04/an-over-due-update.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #237 on: 25 / April / 2022, 01:11:07 »
Another example of what you can achieve handholding the M3 in a high DR environment.


https://photography.grayheron.net/2022/04/i-still-believe-canon-m3-with-chdk-is.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #238 on: 09 / May / 2022, 10:36:54 »
I thought some may be interested in my attempt at introducing an ETTR Meter on the M3.

https://photography.grayheron.net/2022/05/canon-m3-ettr-meter.html
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Offline pigeonhill

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Re: Landscape Focus Bracketing Script
« Reply #239 on: 10 / May / 2022, 02:49:53 »
@reyalp

As you may have spotted in the post above, I’ve made a first attempt at an ‘ETTR Meter’.

In attempting to understand the CHDK histogram, but not being a c programmer, I believe we might wish to tweak some of the CHDK manual…but I could be wrong ;-)

My understanding is that the CHDK histogram, eg see https://photopxl.com/a-better-histogram/, does not show a stops based view, but a linear view, as shown  in figure 4 in the link. Or does it show a gamma view?

If I look at the drawing code in the histogram.c, I come across this:

Code: [Select]
if (conf.histo_show_ev_grid) for (i=1;i<=4;i++) draw_line(x+(1+w)*i/5, y, x+(1+w)*i/5, y+h, FG_COLOR(conf.histo_color2));

That is, as I’ve speculated in my blog post, CHDK, like the Canon Histo, doesn’t divide the Histo into stops, but simply linearly across the Histo range, ie 0-255. Thus the right most divider line, is at 1/5 of the Histo range, which is at about 1/3 Ev down from highlight saturation.

If I’m right we may wish to make this clearer to the user, that the vertical grid lines are not stops.

But, as I say, I may be totally wrong ;-)

As usual I welcome your insight.

Cheers

Garry
« Last Edit: 10 / May / 2022, 03:01:47 by pigeonhill »
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