What Is IRE?

[@Visionmind]

Thank you for your awesome videos. But let me clarify one aspect. Technically there is no IRE value above 100. In that sense IRE is not equal to percentage. Percentages can actually exceed 100. The 109% luma signal is to be incuded in 100IRE in this case. In other words 100IRE is the clipping level if applied to a sensor output. In 8bit tone values 255 is 100 IRE which includes the 109% as well.

[@monsterandmaster]

It's a signal range thing. In SDR domain, in full level, you can't exceed 100IRE. But you can have extended IRE if in video levels (legal range) as 0IRE is 16 and 100 is 235 in 8bit. 109IRE would be 255 in legal range.

[@DanielTuriman]

Thank you, When set an exposure at camera, im refer to histogram and exposure mode, an editing i refer to IRE, make sure 0 to 100 level is a good

[@GMWTravels]

Thank you for a useful video

[@答滴滴滴滴答答答滴答]

Hi, great vidio and wondering wheather this IRE canbe converted into "zones" in zone system?

[@RamiDiab]

You are the man!

[@SinaFarhat]

Thanks for the info! :)

[@OleYoule]

Thank you 👍 It could be interesting to see your video - how expose Slog3 properly using false color mode on external monitor?

[@HarvVideoAudioStuff]

Great suggestion! I'll give this some thought :)

[@alexquargnali6810]

Also how to adjust exposure when changing light to not overexpose half of the video, i very struggle with that 😅

[@andrewdaystudio]

Would love a false color video! :)

[@HarvVideoAudioStuff]

Coming soon 👍🏻

[@MageshSridhar_55]

Hey Harv, Great video with neat and simple explanation. The only concern I have with the video is the background music. The vocals in the song is kinda distracting and interrupting your voice. Other than that, awesome work! Thanks for the video.

[@robertadams3666]

Thanks for making this!

[@cortometrajescristianos6470]

Excelente video gracias

[@AJCoReTV]

Ok helpful.. do you make the adjustments to hit the percentages using your key light brightness settings, or do you adjust the camera (apurture/iso) settings?

[@markleethephotographer]

How do you know WHERE the different parts of the image are shown on the waveform?!

[@geoleo2597]

So...in the dark would a 50IRE camera be able to see skin tones or details?

[@DrWasim]

Another awesome video Harv, thanks! I have a question. I am of Pakistani heritage, and my skin is slightly darker than yours. At what level should I set the zebras when filming my self, in order to get correct skin exposure?

[@Roz-Inspire-Video]

Awesome!!!

[@StantonGiles]

broooo the background music. whhyyyyyy haha

[@HarvVideoAudioStuff]

Eh? It’s at like -40db, what’s the prob? 😄

[@TheMash84]

Great video and contents. Well explained and pleasing to watch and to listen. I have what can sound like a dumb question. It's a specific case scenario. With Atomos Ninja you can load LUTs and have a preview in realtime. This affects the exposure on the exposure tools as well, such as waveform. Do we expose and check the waveform with the bare LOG footage or with the choosen LUT? I guess we should expose the LOG as we could decide to use another LUT later, resulting in a wrong exposure. Thank you very much!

[@J_HNP]

Hi @TheMash, Previewing a LUT on your Atamos Ninja should not affect your waveform reading within the Ninja. Assuming you have the LUT loaded onto the Ninja, you should be fine seeing the LUT in real time while also viewing waveforms, vectors scopes, and false color tools. Perhaps you are sending a LUT from your camera into the Ninja? If that is the case, see if your camera allows you to prevent the LUT from being sent to the Ninja over HDMI. Hope that helps!

[@rendermanpro]

I would remove "music" next time........ Regarding topic they think telling 42% middle grey and IRE, make them looks smarter 🤣 Luma = brightness, IRE = procentage. And, you need to expose the subject somewhere around the center, at 50% brightness, and that it.... Simple

[@LoveUniqueStudios]

so you set you zebras to 50% and once you see the zebras you back down? I thought 60-65% for say a white person's skin?

[@tomc7376]

I thought the thumbnail said "Irie" at first. Why that would be some dub and ganja, of course.