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Using a "proper" camera as a webcam

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Re: Using a "proper" camera as a webcam

#161

The quality aspect is obviously important but I'd suggest that the location of the lens is also vital if you don't want to have meetings where everyone seems to be not looking at you. I cannot wait until cameras work behind the screen and can be positioned right in the center but for now, the only option I found was something called Center Cam that mounts a small lense on a skinny support that can be positioned over…

Why don't you just use a teleprompter setup? That's so much simpler

Re: Using a "proper" camera as a webcam

#162
post #158
post #134

I have an alternative approach that I discovered recently while building a microscope with a webcam driven by linux. Nearly all modern cheap webcams are UVC-compatible and they work with linux. Different models expose different functionalities, but I ended up with this: https://www.amazon.com/dp/B07R489K8L It does 1600x1200 25FPS YUYV (as well as a wide range of other resolutions and FPS) uses the C/CS-mount lens sta…

> I have an alternative approach that I discovered recently while building a microscope with a webcam driven by linux. Do you have a web page somewhere describing your linux webcam microscope?

Not really. It's unclear if the time invested in documenting the design is worth it yet. I haven't decided if it would be useful. For now, I recommend looking at OpenFlexure or Flexiscope (there's one other one that's good but I forget the name).

The idea is fairly simple. It's a basic construction kit for simple microscopes (just LED, lens, objective, tube, and camera, all mounted to an aluminum extrusion post using 3D printed parts). Then some inexpensive XYZ stages to move the sample holder holder around for large FOV and focus stacking.

Everything else is just cobbled-together from python, but see MicroManager for a tool that can drive an open source microscope.

Re: Using a "proper" camera as a webcam

#163

The quality aspect is obviously important but I'd suggest that the location of the lens is also vital if you don't want to have meetings where everyone seems to be not looking at you. I cannot wait until cameras work behind the screen and can be positioned right in the center but for now, the only option I found was something called Center Cam that mounts a small lense on a skinny support that can be positioned over…

Why don't you just use a teleprompter setup? That's so much simpler

I wasn't aware of such a thing until I came across the parent thread - something to look into for sure

Re: Using a "proper" camera as a webcam

#164

If you go this route, please make sure your system is robust and ready to go before meetings. We had to ask one employee to go back to his reliable built-in webcam because every other meeting started with 2 minutes of him getting his camera turned on, messing with audio inputs, getting his microphone boom in place, and fighting other quirks. He also had a tendency to drop out of long meetings when his camera overheat…

Agree 100% - This is why I eventually dropped it. I used to run a photography side gig, so I reused my full frame DSLR, nice portrait lens and lighting + cloth backdrop. But I had cables everywhere and multiple points of failure in the chain. Camera could overheat, software was wonky, something would get unplugged, and there was stress on the CPU at times too due to 3rd party apps required.

Overall it just wasn't worth the effort, especially once I realized nobody cared or even really noticed. Now, absolutely, many projects are worth doing for their own sake and for your own satisfaction :). But while accomplishing it brought that satisfaction, continued use on daily bases just wasn't worth it.

So I looked for a nice webcam with narrowest possible FOV (which is the opposite from what manufacturers are going for, unfortunately), put it on a tripod with ring light, and I get results that are externally undistinguishable (if not better), but FAR superior reliability.

----

Note also that photographer in me wanted to do a Portrait shot with zoom in my face. Interestingly, overwhelming feedback once I actually asked real people, is that they PREFERRED a wide shot with my office visible. Made it more human and less stark/intimidating, apparently. So as ever, don't make assumptions of your user base! :)

Re: Using a "proper" camera as a webcam

#165
post #72

Earlier quoted context omitted.

I second this! I’ve been using one of these as well, and I’ve noticed the positive impact looking directly at the camera can have on my conversations.

Do either of you have a shot of what this looks like in practice? Google Images isn't giving me much. Specifically what the Zoom or Meet looks like from your perspective.

Sure, this is what I see [1] and you can see how it looks on the other side from my Twitch streams [2]

[1] https://i.imgur.com/4JPIHx1.jpg [2] https://www.twitch.tv/mrdonbrown

Re: Using a "proper" camera as a webcam

#166

Having done exactly this, my main annoyance is that you have to manually power on and off the camera, which means losing whatever zoom and settings you had configured.

There are proper cameras which don't remember settings across power cycles and battery swaps? Curious. Never heard of that before, that's a complete deal-breaker for actually, y'know', using a camera to me. Perhaps the SRAM battery/capacitor in yours is just dead? (Then again, not exactly sure how that happens, I've used 15+ year old Nikon DSLRs and they had no trouble with Alzheimers)

This is actually an issue I've got with the a6300 and the Sony 18-105mm f/4.0 G lens, because it's a zoom-by-wire lens and forgets the zoom setting after every restart.

Re: Using a "proper" camera as a webcam

#167
post #86

Earlier quoted context omitted.

I'm also using an E m5 mk2 on macos, with the battery holder grip and 25mm lens. I'm happy with the image but the software is pretty bad, isn't it? There's a substantial lag between the audio and video which is disconcerting to the viewer. And the video stream doesn't reliably start. I usually have to flip the video off and on a few dozen times in the Zoom app before it begins working. Aside from that the cost of the…

I haven't had the same experience at all, perhaps its because I'm on windows? I also don't use my camera as my audio source. I use my laptop microphone for now, with plans to get an external microphone. I just use the usb cable that came with the camera, I never had to purchase it separately. The battery I use is one that uses the shell of a matching battery but provides a wired 8V DC through a usb SMPS, 20$ from ali…

I'm using the microphone on the mac ... the audio is ahead of the video. I don't think the OM-D Webcam software supports audio at all.

Re: Using a "proper" camera as a webcam

#168
post #64

I agree with the blogger that you should go with a smaller sensor size. In addition to better price points, they have less scanning to do for each image and should work better for this scenario. I've heard reports of some full frame mirrorless cameras overheating when used extensively for video.

That really entirely depends on the brand / model. Some will overheat in under an hour, some will go on forever as long as you supply power. Price has nothing to do with it. DSLRs will almost certainly be a cheaper option than a mirrorless camera for this, because pretty much any DSLR from the last ten or so years works for this, and there are many more of them. Autofocus and availability of clean HDMI in video-livev…

> DSLRs will almost certainly be a cheaper option than a mirrorless camera for this, because pretty much any DSLR from the last ten or so years works for this, and there are many more of them

That used to be true, but with used a6300 cameras going for around 300€ nowadays, it's not the case anymore.

Re: Using a "proper" camera as a webcam

#169

Earlier quoted context omitted.

Why don't you just use a teleprompter setup? That's so much simpler

I wasn't aware of such a thing until I came across the parent thread - something to look into for sure

It's really just a piece of glass and some black fabric to keep the light out, very inexpensive and super useful compared to all the engineering solutions suggested here^^
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