Landscape Focus Bracketing Script

pigeonhill

Re: Landscape Focus Bracketing Script

« Reply #150 on: 15 / July / 2020, 11:20:38 »

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Just to say I've added an auto exposure bracketing option, to the other ETTR based options on the M3 script.

The Auto option assumes your base exposure is made for the shadows. The exposure bracketing will increase, in 2Ev steps, until the top x% of the histogram has 'zero' content. You can choose x to be between 5 and 30%.

As usual the script can be downloaded from here: https://gist.github.com/pigeonhill/cdf25239bae6a4343e6431fb4c10c849

For non-macro use this script is 'all' you need on the M3 to do exposure and focus bracketing, individually or together.

« Last Edit: 18 / July / 2020, 04:23:54 by pigeonhill »

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pigeonhill

Re: Landscape Focus Bracketing Script

« Reply #151 on: 18 / July / 2020, 02:41:40 »

Have now tweaked the non-M3 script to also include the auto exposure bracketing feature.
Info on the script may be found here: https://chdk.fandom.com/wiki/Landscape_Focus_Bracketing_:_perfect_near_to_far_focus_brackets

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pigeonhill

Re: Landscape Focus Bracketing Script

« Reply #152 on: 09 / August / 2020, 08:27:03 »

Another minor, but useful, tweak to the non M3 version of the script, that provides an estimate of the number of focus brackets that will be taken.

The script will pause to show the number of brackets, thus allowing you to terminate the script, with a full shutter press, if the number is too high, or to run the script with a half shutter press.

A large number of brackets may occur if you are, say, using the Min2Inf option and/or you are using an overlap less than the CHDK CoC. That is the full focus range or your camera has a small minimum focus.

I’ve updated the info in the Scripts area, where the latest version may be accessed.

Have tested the script on my S95, G7X, G5X and G1X.

« Last Edit: 11 / August / 2020, 11:49:38 by pigeonhill »

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pigeonhill

Re: Landscape Focus Bracketing Script

« Reply #153 on: 21 / August / 2020, 10:33:36 »

I thought some may be interested in my latest post, where I carried out simple deep focus test on the G7X:

http://photography.grayheron.net/2020/08/deep-focus-test.html

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