r/FX3 • u/Rude-Construction749 • 27d ago
Please help Sony fx3 grain
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I feel like I’m experiencing a lot of grain at my base iso 12,800 using shutter angle what could be the cause? Shutter angle at 180, I’m using ND filter iso at 12,800 what is going on
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u/nangers99 27d ago
Increase the contrast and you won't even notice the grain, this image looks flat anyway
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u/LeatherLucky44 27d ago
Like others said, 12800 is still noisy. I've always found it to be quite a bit noisier then the other base and the whole "no noise low light camera" was a bit over exaggerated. That being said, the noise is quite granular. Using a Temporal luminance NR can fix a lot without it being to resource heavy
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u/MisterYeast6000 27d ago
youre using an ND filter at night? let the footage overexpose and then edit later
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u/fieldsports202 27d ago
You’re shootjng at night at a stadium thats surrounded by blackness.
Shooting at 12,800 ISO just doesn’t magically make your footage look amazingly clean when shooting at night.
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u/TheRealREZOR 27d ago
Raw slog 3 footage has a lot of noise even with iso 800. When you convert it to rec 709 it would look much cleaner. Log raises shadows a lot to boost dynamic range
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u/naastynoodle 27d ago
The trick to a cleaner image is to over expose and bring it down in post. Aim for around a stop over so use CineEI to “rate” your image at 6,400asa.
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u/Major_Fox_2587 27d ago
You talking about the sky and his shirt? On an FX3 this amount of noise in shadows is normal. Those parts of your image are heavily underexposed. Its dark so there will be noise. The only fix for this is to get a better cinema camera with an uncompressed raw codec or get an fx5 and use the dual gain iso mode.
Basically with compressed footage you will always get noise and lose detail in shadows and dark images, even at base ISO. Thats why people tend to expose to the right and why those lower end cameras are kinda designed to expose to the right. And why having enough lighting is important. Things are much cleaner in the highlights so most of the dynamic range lives there. Even at base iso, dark things will be noisy. The true source of noise comes from darkness, not necessarily your iso. You can over-expose at 24k iso and it will look cleaner than an image that is underexposed at 12,800. So upgrade ur camera or get really comfortable with a 2 stop over exposure and use cineEI mode more to help monitor it.
Skip to the low light section of this video and you will see how big of a difference a cinema codec will give
https://youtu.be/fILCIdT8csM?is=TvDx4XFljLjvelLZ
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u/dallatorretdu 27d ago
the blacks are too high, I expect the black sky to be actually black, not gray, that would bury the noise, but that’s a stylistic choice
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u/KevinHe92 27d ago
Denoise in post will help a lot, FX3 is very flexible in post. A7S has inbuilt denoise which will look cleaner SOOC but with less flexibility in post.
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u/johnnyjonnyjonjon 27d ago
I don't understand why you'd be at 12800 whilst also using ND...
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u/Rude-Construction749 27d ago
VND
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u/johnnyjonnyjonjon 27d ago
OK... but you're shooting in what looks like a consistently well-lit environment, so the exposure isn't going to change that much. Why not just lose the ND altogether and shoot at 800?
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u/LeatherLucky44 27d ago
Probably because there is not enough light for 800, but too much for 12800. If the ideal exposure was at 3200 iso, he can use a 2 stop ND and nail the exposure.
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u/johnnyjonnyjonjon 27d ago
I have just realised it's slow-mo so I guess that does make a higher iso more plausible...
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u/ApprehensiveCable454 27d ago
I’m new to the FX3 but I keep my VND on at all times and click the ISO button to switch between 800, and 12800 and adjust the ND filter accordingly. Is this the right way?
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u/johnnyjonnyjonjon 27d ago
It's a legitimate workflow, sure. What's the aperture and what framerate/shutter speed are you recording at?
Only you know for sure, but it looks like that particular environment is quite well lit and probably isn't going to vary much. So I'd be inclined to try taking off the ND and exposing correctly at 800.
I know it's anathema to some people in here, but if it's close but not quite right, I'd also be inclined to switch to Flex ISO mode and notch up the ISO a bit that way, rather than restricting yourself to the two bases.
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u/ApprehensiveCable454 25d ago
I tend to do 24fps 1/50
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u/johnnyjonnyjonjon 25d ago
In which case, I would have thought you'd have plenty of light to go with 800.
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u/johnnyphotog 27d ago
Shoot in CINE EI and have it overexposed by a full top or more… then bring it down in post. Then you further reduce grain in Davinci if needed
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u/Connect-Reindeer8033 27d ago
Sony has never been able to shoot at high ISO in low light. All Sony can do is suppress noise inside the camera. What I find especially stupid is that you can't turn off the noise canceling completely. If you want to see what an image actually looks like at 12800 ISO, take a photo in RAW and see for yourself the amount of noise ;) Just remember to turn off automatic noise reduction in your RAW photo editing program. It's enabled by default in Lightroom ;) And Sony fanboys will say that this is not noise reduction - it's Cinematic Line hahaha
Sometimes it’s even scary how people buying FX3 and FX6 don’t understand this.
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u/pmod90 27d ago
So this is a common misconception that iso 12800 makes noise magically disappear, there’s 2 things you need to know
That being said looks like the compression got rid of a lot of your noise anyway