Extreme low-light hand-held night video with f1.4 lenses and the M6ii
4 months ago
5
Since the time change, it gets dark early... I've been experimenting with very low-light night video, shooting trains in Tampa FL after nightfall.
I've gotten good results, without the excessive video 'noise' that super-high-ISO, low light video usually shows, by taking my 'heavy' large-aperture f1.4 lenses.
The native f1.4 lenses in EOS M mount like the Canon EF-M 32mm f1.4, and the Sigma 16/30/56 f1.4 'trio' work great for this.
I've found that the Rokinon EF-mount 135mm f2 lens paired with the Viltrox 0.71x speed booster makes a great, sharp (but heavy) 100mm f1.4 lens! It's the least expensive way to get to this focal length and aperture - dedicated 100mmm f1.4 lenses are rare, and start at many thousands of dollars.
I use a DSLRKit A001 tripod collar on the 135 Roki -- which when hand-holding really helps as the tripod foot rests in your palm, allowing you to precision-focus the lens with your thumb and fingers without jarring it. Needless to say the collar helps balance the heavy lens when used on a tripod, taking the pressure off the mount.
I was able to get stabilized, clear video with the 100mm Roki-Viltrox combo by shooting in 4k video mode with the Canon M6ii with digital (in-body) IS turned on, further stabilizing the video using the Warp Stabilizer in Adobe Premiere Pro, and downsampling the final result to 1080p to recover the apparent sharpness lost by the digital IS cropping. Downsampling also helps keep the noise and grain levels down.
Here's a link to a night train video with the Sigma 16mm f1.4 and the Rokinon-Viltrox 100mm f1.4 combo, shot at f1.4, all hand-held. It was a dark night with no Moon. The Rokinon at f1.4 has a shallow depth of field, so the telephoto shots are not sharp in all parts of the frame. It's also a manual focus lens, so focus adjustment might have lagged the train or not happened in some cases.
Shutter speeds were 1/80 second or faster so that the trains wouldn't be too blurred. I used Manual video mode, setting the shutter speed, with ISO set on Auto, but the ISO did not go higher than ISO 5000 I believe.
In post processing I also significantly boosted the brightness, contrast, saturation, and sharpness. In my experience, this normally makes even more of a mess of low-light video shot with extreme ISOs such as 12,800 you end up shooting at with slower lenses (even an f2 lens).
I've tried shooting with the Rokinon at night, at 135mm f2.0 --- it's more shaky so it needs more stabilization processing, and the f2.0 at that focal length results in videos that are too noisy ---- 100mm f1.4 seems to be the sweet spot!
https://youtu.be/KXZznLIMbmc