Tweak to DoF feedback - Feature Requests - CHDK Forum
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Tweak to DoF feedback

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Offline pigeonhill

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Tweak to DoF feedback
« on: 03 / January / 2019, 13:30:49 »
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Currently the the near DoF, when the focus is at infinity, reports infinity. By definition, when focused at inifinity the near DoF is at the hyperfocal.

May I request this change, to correct things.

Cheers

Garry
« Last Edit: 04 / January / 2019, 01:13:51 by pigeonhill »
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Offline pigeonhill

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Re: Tweak to DoF feedback
« Reply #1 on: 03 / January / 2019, 14:09:25 »
I meant to say at the hyperfocal.
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Offline waterwingz

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Re: Tweak to DoF feedback
« Reply #2 on: 03 / January / 2019, 19:08:07 »
Quote from: pigeonhill on 03 / January / 2019, 14:09:25
I meant to say at the hyperfocal.
fyi... you can edit your prevous posts. As a courtesy you might want to indicate what changes you made.
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Offline pigeonhill

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Re: Tweak to DoF feedback
« Reply #3 on: 04 / January / 2019, 01:19:24 »
Original post corrected. Sorry for the 'typo'. As I say, it would be technically correct if the DoF reporting could be corrected to show the near DoF at the hyperfocal, when the focus is at infinity.

This way scripts can use this info as well as it looking right in the on screen  feedback.

Cheers

Garry
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Offline pigeonhill

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Re: Tweak to DoF feedback
« Reply #4 on: 04 / January / 2019, 01:52:44 »
waterwingz
If the DoF info reporting does get tweaked, to correct the near.dof at infinity, may I request you consider adding one more piece of info, namely an estimate (sic) of the number of (non-macro) focus brackets from the current focus point (fp) to the hyprerfocal (H).
This can be estimated simply from (H+fp)/(2*fp). When the fp is at H or beyond the number would be 1.

The number of brackets increases rather rapidly for longer focal lengths, and thus focus stacking is usually restricted to shorter lens settings. The user should be aware of this as part of the DoF feedback IMHO.

Cheers
Garry
« Last Edit: 04 / January / 2019, 07:39:27 by pigeonhill »
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