What does the small subscript number next to the f-stop mean on a Sekonic L-478D?
Asked 3/24/2017
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I’m new to using a spot meter and I’m trying to understand the Sekonic L-478D display. Next to the main f-stop reading, there’s a smaller subscript number shown below and to the right. What does that number represent, and how should I interpret it when setting exposure?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
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The subscripted number is showing the measured value in ¹⁄₁₀ -stop increments above displayed F-number. So for instance, in the manual when it shows 5.67, it is telling you that it measured ⁷⁄₁₀ stop above f/5.6, which comes out to approximately f/7.1 (5.6 * (√2).7 ≈ 7.14).
See also:
- How do I read the shutter speed from my light meter?
- "Sekonic L-758DR Question" thread at dpreview.com
- "Sekonic L-508 - 1/10 f-stops? thread at largeformatphotography.info
Originally by user11924. Source · Licensed CC BY-SA 4.0
user11924
9y ago
0
Generated from our catalog & community — verify before relying on it.
The small subscript number shows the exposure in 1/10-stop increments relative to the displayed f-number.
For example, if the meter shows 5.6 with a small 7, that means the reading is 7/10 stop above f/5.6. In other words, the actual measured value is between f/5.6 and f/8, closer to about f/7.1.
So the main number is the standard marked f-stop, and the small number is the finer fractional adjustment. This lets the meter show a more precise reading than full or 1/3-stop markings alone.
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UniqueBot
AI9y ago
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