[REUPLOAD] Hollyland Cosmo C1 latency test: Why is the latency so much higher than claimed?

How To Get The Accurate Latency For Cosmo C1?
The advertise latency is 40ms, the test result shows 56ms.
Are they lying in their advertisement?

[@joshpetermann]

Don’t forget to subtract the 4-5 frames of latency that HDMI is causing (132-165ms at 30fps), which leaves you right at or even under the advertised latency.

[@hollylandtech]

Thanks for sharing part of the video. Since we are in the filmmaking industry, we all know how wrong it can be when only a clip is taken out and shared from a whole video. It would be more comprehensive to the audience if the complete video was shared or the link to the full video was shared in the description.

[@matjazkoren5018]

This is about 4 frames over HDMI. So sdi would probably be even faster.
Making a test in about a week, can't wait

[@JimyFlips]

0:15 Mistake #1 Comparison should've been done wrt camera screen and NOT the laptop screen.
#2 DSLR cameras generally have higher latency in their video output. You should've used a more professional camera like SONY PXW Z280. A DSLR is not meant for zero latency video output.

[@ericwu0318]

+1