Author Topic: extremely low light hdr 5d3 video  (Read 568 times)

70MM13

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extremely low light hdr 5d3 video
« on: July 24, 2020, 04:50:49 PM »
shot at TNT iso 100, in near darkness, exposed to preserve the filament on the (night) light bulb visible in the scene.  the only light source was an ikea paper lamp in the distance.  you can see the shadows it casts when i move my hands around...

i could have added fill light, but that's not the point.  it was an exercise in what is possible.

there's no way you could push underexposed shadows this hard with stock canon 100 iso.  no way.  check out how beautiful the filament looks.

as always with my videos, zero noise reduction...

i'm not interested in the arguments from closed minds.  i'm only sharing this to encourage open minded people to try TNT!

check out the thread created by timbytheriver (the other T) for details on using tnt: https://www.magiclantern.fm/forum/index.php?topic=24702.0


here are links to my old howto guides:




wib

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Re: extremely low light hdr 5d3 video
« Reply #1 on: July 28, 2020, 01:12:28 PM »
what is TNT iso 100 ?
EOS 5DMKIII | EF 50mm f/1.4 USM Macro | EF 100mm f/2.8 Macro | EF 24-105mm f/3.5
with crop_rec_4k.2018Jul22.5D3113
testing crop_rec_4k_mlv_snd_isogain_1x3_presets_2020Jul15.5D3113

70MM13

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Re: extremely low light hdr 5d3 video
« Reply #2 on: July 28, 2020, 03:17:26 PM »
i updated the first post with links to the thread and howto videos.

tnt is an easy to use setup for preamp optimisation on the 5d3.  it requires a bit of work to set up, but then it's super quick and easy to use...  every 5d3 video on my channel uses it.

wib

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Re: extremely low light hdr 5d3 video
« Reply #3 on: July 29, 2020, 02:39:09 PM »
SO to sum up because I'm not sure I got it all but you manage to "reduce" the way the sensibilty works, than you can shoot with let's say 1600 without any noise ?

Does this module will work with Danne's 15 july build ?

I'm curious in this video, as it's the one you are talking about, how was set up the exposition and how did you color grade it after ?

EOS 5DMKIII | EF 50mm f/1.4 USM Macro | EF 100mm f/2.8 Macro | EF 24-105mm f/3.5
with crop_rec_4k.2018Jul22.5D3113
testing crop_rec_4k_mlv_snd_isogain_1x3_presets_2020Jul15.5D3113

70MM13

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Re: extremely low light hdr 5d3 video
« Reply #4 on: July 29, 2020, 04:46:27 PM »
it's nothing more than adjusting the preamp levels to _reduce_ noise in the darkest shadows.

i'm not into high iso for video because i want the most dynamic range.  if your scene cannot be lit enough for your needs, use faster glass before increasing the iso, unless you want clipped highlights.

using the optimised preamp setting i get the same dynamic range from 100-400 iso, and that's enough for me.  it starts to lose range at 800, and quite a bit at 1600.  mind you, if you need to shoot at 1600, you would have slightly cleaner shadows so it's still a benefit...

regarding the video you linked, that was just normal ambient room light, shot with tnt 200 iso.

i grade all my videos using resolve.  the only exception is the music video "wake up call" that i did exclusively with rawtherapee (not recommended!)

the video in question was exposed for highlights, and the shadows were lifted in post.  pretty standard stuff :)

wib

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Re: extremely low light hdr 5d3 video
« Reply #5 on: July 29, 2020, 06:47:05 PM »
I just to make some test, it seems to record brighter than what you see, and actually gives less noise because in post I have to reduce the exposition. It seems interesting !
EOS 5DMKIII | EF 50mm f/1.4 USM Macro | EF 100mm f/2.8 Macro | EF 24-105mm f/3.5
with crop_rec_4k.2018Jul22.5D3113
testing crop_rec_4k_mlv_snd_isogain_1x3_presets_2020Jul15.5D3113

70MM13

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Re: extremely low light hdr 5d3 video
« Reply #6 on: July 29, 2020, 08:28:47 PM »
excellent!  have fun with it!
i do ;)

wib

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Re: extremely low light hdr 5d3 video
« Reply #7 on: July 29, 2020, 08:37:43 PM »
what would we your recommended advise
EOS 5DMKIII | EF 50mm f/1.4 USM Macro | EF 100mm f/2.8 Macro | EF 24-105mm f/3.5
with crop_rec_4k.2018Jul22.5D3113
testing crop_rec_4k_mlv_snd_isogain_1x3_presets_2020Jul15.5D3113

70MM13

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Re: extremely low light hdr 5d3 video
« Reply #8 on: July 30, 2020, 12:15:47 PM »
sorry, i don't know what you are asking.  lost in translation...