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Featured Article

Douglas Hennessy About The FDM-1T

I received the meter and have been running tests. I have the opportunity to test it alongside another device capable of metering flash duration. Thus far, I’ve been testing three Nikon Speedlights (SB-800, SB-900 & SB-910). I am very impressed with he results for your unit. I will continue testing and send you the… Read More »

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Featured Article

Carlo Hindian About The FDM-1T

Every photographer at one point will be asked to freeze motion.

It is at that moment, when commonly held assumptions and manufacturer’s claims are revealed to be false or greatly exaggerated.

One common belief amongst photographers is that by decreasing power output flash duration decreases. Though somewhat true many units have a minimum flash… Read More »

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Flash Duration of Yongnuo Speedlite YN600EX-RT II

Flash Duration of Yongnuo Speedlite YN600EX-RT II

Flash duration analysis for a Yongnuo Speedlite YN600EX-RT II flash unit: Brightness-based measurement results for 8 f-stops (Full charge down to 1/128), followed by an exposure-based HSS measurement.

Generated by the FDM-1T flash duration meter.

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Firmware Version 3.1.0 Available

Firmware Version 3.1.0 Available

We are pleased to announce the official release of the new FDM-1T firmware version 3.1.0, which is available for download as of now.

In case you have you ever wondered about the full burning time of your flash units, now it’s the time to find out. After this upgrade, your FDM-1T will be… Read More »

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Firmware Version 3.0.0 Available

Firmware Version 3.0.0 Available

We are pleased to announce – on today’s New Year’s Day 2018 – the official release of the new FDM-1T firmware version 3.0.0, which is available for download as of now.

The new firmware is – appropriate to the present date – a major release upgrade. This means that, compared to its predecessor,… Read More »

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Firmware Version 2.16.2 Available

Firmware Version 2.16.2 Available

A new version of the FDM-1T firmware including the improvements listed below has been released and is available for download.

  • Incorrectly formatted SD memory cards are now being safely detected and reported.
  • Measurement of t0.1 and t0.5 has been refined for alternating signals such as emitted by high speed sync (HSS) capable… Read More »
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Flash Duration of Nikon Speedlight SB-900

Flash Duration of Nikon Speedlight SB-900

Flash duration analysis for a Nikon Speedlight SB-900 flash unit: Measurement results for 8 f-stops (Full charge down to 1/128).

Generated by the FDM-1T flash duration meter.

➤  Courtesy of Douglas Hennessy