Is it possible to find a webcam with large aperture?

People who do video casting with a green screen find that having a large aperture helps diffuse the green screen and make it clear at night with cheap lighting equipment. Also, editing takes much less time because you don’t have to re-sync the audio and video or move files from the webcam to the computer.

How large is large?

For a prime lens with a shorter focal length, f/1.8 is fast, f/1.4 is fast, and f/1.2 is very fast. f/1.2 is the fastest lens you can buy for a webcam today. Canon’s f/1.0 50mm, made in 2000, was the fastest lens ever made. If you have $2,000 in your couch cushions, you can buy an extraordinary 40mm f/0.85 lens for Micro Four Thirds.

Olympus PRO

The 45mm, 25mm, and 17mm lenses from Olympus all have lens hoods and are f/1.8. Together, they weigh 372g and have a list price of $1,300. The Olympus PRO 17mm, 25mm, and 45mm f/1.2 lenses are about 14 EV faster than the standard line lenses. The list price for the set is $3,600, and it weighs a total of 1,210g. That’s not all you get, for sure. These lenses are more durable, have better image quality, can handle the weather, etc.

But as you can see, many photographers willingly give up a small amount of light and choose the cheaper, lighter glass. With their Nokton f/0.95 series, Voightlander ups the ante even more. There’s a 10.5mm, a 17.5mm, a 24mm, and a 42.5mm. The three lenses that go with each other will cost you $2,500 and weigh 1,546g. They are all manual lenses that don’t work well in bad weather. Most of the time, wider lenses are a bit slower and get slower as they get more comprehensive. The 8mm, f/1.8 PRO fisheye lens from Olympus is the fastest fisheye lens for any platform. There are a few in the range of f/2.0–2.8, which is fast for a fisheye or ultra-wide-angle lens.

Voightlander Nokton

The Voightlander Nokton webcam 10.5mm f/0.95 for M43, which costs about $1100, is a good example. When it comes to zoom lenses, the difference is even more apparent. On the left is the $200, 190-gram Olympus 40–150mm f/4.0–5.6. On the right, you can see the Olympus 40–150mm f/2.8 PRO, which costs $1500 and weighs 760g. And yes, the PRO lens is sealed against the elements. It has linear voice coil focusing motors that make autofocus very fast, especially with PDAF cameras. But it costs a lot more to make an f/2.8 lens that stays at f/2.8 up to 150mm.