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Photo Directory: Round shutter speeds and show long exposures in seconds - #1101
Photo::get_exif() turns the stored exposure time, in seconds, into 1/N with (int)( 1.0 / (float) $value ). The cast cuts off the decimals instead of rounding, so 1/60, which core stores as 0.016666666666667, becomes 59.99… and then 1/59. An exposure longer than a second gives a number below 1, so it shows 1/0; exactly 1 second shows 1/1. A non-numeric stored value would throw a DivisionByZeroError; there were none in the sample below.
I ran a sample of 954 live photos that have a shutter speed (read through the REST API, uploaded from 2021 to 2026) through the function. 330 of them change with this patch: 321 fractions that were one step off, 3 that were wrong in other ways (1/0 for 25 and 1700 seconds, 1/3 for 0.3 seconds), and 6 that were right but now use the seconds format.
This uses the same split as camera screens and ExifTool: fractions up to 1/4 second, seconds above that.
Up to 1/4 second: a rounded fraction, such as 1/60.
Longer: seconds with one decimal and an s, such as 0.5s, 1s, 2.5s and 25s. A plain 1 second used to show as 1/1, and 0.5 as 1/2.
Not a positive number: the row is skipped, as the focal length and ISO rows already do.
Testing
In a local WordPress trunk site (PHP 8.3), I loaded the plugin's registrations.php, photo.php and template-tags.php, created a photo with a featured image, stored each value in its image metadata, and read Photo::get_exif() and show_exif() before and after:
Stored value
Before
After
0.016666666666667 (1/60)
1/59
1/60
0.5
1/2
0.5s
1
1/1
1s
2
1/0
2s
0, empty, missing
skipped
skipped
abc
DivisionByZeroError
skipped
-0.5
1/-2
skipped
The 55 third-stop camera speeds from 1/8000 to 30 seconds, stored the way core stores them: before, 1/60, 1/15, 1/13 and 1/6 were one step off, 0.3, 0.4, 0.6 and 0.8 seconds were wrong, and 1.3 seconds and longer showed 1/0. After, all 55 show as expected.
The 954 live values: the new output matches a separate implementation of ExifTool's rule, with the s added, for every value, and no rounded fraction moved further from the stored value.
The same 1,000 values (the live ones, the camera speeds and rounding edge cases) give identical output on PHP 8.3, 8.4 and 8.5.
When the shutter speed row is skipped, the aperture and ISO rows still show.
Use of AI Tools
AI assistance: Yes
Tool(s): Claude Code and Codex
Used for: Finding the bug while reading the plugin, checking live photos and their stored values, the local tests, and the wording of this description. I reviewed the change and the results, and I take responsibility for the contribution.
Summary by CodeRabbit
Bug Fixes
Shutter speeds in photo details are now displayed in a more readable format: fast speeds appear as fractions, while slower speeds appear in seconds.
Invalid or nonpositive shutter-speed values are omitted instead of being displayed incorrectly.
…in seconds.
The shutter speed was shown as 1/N with N truncated, so 1/60 showed as 1/59 and exposures longer than a second as 1/0. Exposures up to 1/4 second now show as a rounded fraction, longer ones in seconds, and values that are not a positive number are skipped.
get_exif() now validates shutter-speed values and formats positive values as reciprocal fractions or seconds based on exposure duration.
Changes: EXIF shutter-speed formatting
Layer / File(s)
Summary
Validate and format shutter speeds wordpress.org/public_html/wp-content/plugins/photo-directory/inc/photo.php
get_exif() omits nonnumeric and nonpositive shutter-speed values. It formats values below 0.25001 seconds as reciprocal fractions and longer exposures to at most one decimal place with an s suffix.
Some narrowly bounded shutter speeds may display an inaccurate exposure duration.
Pre-merge checks: 5
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Title check
The title names the two behaviors the PR changes: shutter speeds are rounded, and exposures longer than 1/4 second are shown in seconds. The title is specific and matches the summary and objectives. I…
Docstring Coverage
Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.
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Full details: Title check
Explanation
The title names the two behaviors the PR changes: shutter speeds are rounded, and exposures longer than 1/4 second are shown in seconds. The title is specific and matches the summary and objectives. It does not cover the positive-value validation, but the title does not need every detail.
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Actionable comments posted: 1
🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at
@wordpress.org/public_html/wp-content/plugins/photo-directory/inc/photo.php:
- Around line 964-979: Update the shutter_speed formatting condition in
Photo::get_exif() to use the exact 0.25-second boundary: format values at or
below 0.25 as fractions and longer exposures in seconds. Remove the float-error
margin from the condition and its comment.
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The shutter speed on photo pages is often wrong. For example:
1/0. Its stored exposure time is 2 seconds.1/59. Its stored exposure time is 0.0166674 seconds, about 1/60.Photo::get_exif()turns the stored exposure time, in seconds, into1/Nwith(int)( 1.0 / (float) $value ). The cast cuts off the decimals instead of rounding, so 1/60, which core stores as0.016666666666667, becomes 59.99… and then1/59. An exposure longer than a second gives a number below 1, so it shows1/0; exactly 1 second shows1/1. A non-numeric stored value would throw aDivisionByZeroError; there were none in the sample below.I ran a sample of 954 live photos that have a shutter speed (read through the REST API, uploaded from 2021 to 2026) through the function. 330 of them change with this patch: 321 fractions that were one step off, 3 that were wrong in other ways (
1/0for 25 and 1700 seconds,1/3for 0.3 seconds), and 6 that were right but now use the seconds format.This uses the same split as camera screens and ExifTool: fractions up to 1/4 second, seconds above that.
1/60.s, such as0.5s,1s,2.5sand25s. A plain1second used to show as1/1, and0.5as1/2.Testing
In a local WordPress trunk site (PHP 8.3), I loaded the plugin's
registrations.php,photo.phpandtemplate-tags.php, created a photo with a featured image, stored each value in its image metadata, and readPhoto::get_exif()andshow_exif()before and after:0.016666666666667(1/60)1/591/600.51/20.5s11/11s21/02s0, empty, missingabcDivisionByZeroError-0.51/-21/0. After, all 55 show as expected.sadded, for every value, and no rounded fraction moved further from the stored value.Use of AI Tools
AI assistance: Yes
Tool(s): Claude Code and Codex
Used for: Finding the bug while reading the plugin, checking live photos and their stored values, the local tests, and the wording of this description. I reviewed the change and the results, and I take responsibility for the contribution.
Summary by CodeRabbit