roundaboutnow

On Mac Studio M2 Ultra, I see 4 TB ports on rear, 2 TB ports on front, and 1 HDMI port on rear. So no way to directly connect "Eight displays with up to 4K resolution at 60Hz" ...at least one TB dual-display adapter would be needed.

If I want to drive 8 HDMI displays, it should be possible to install four TB-to-dual HDMI adapters on the 4 rear M2 Ultra TB ports.

I'll be looking into this further, but if anyone has any insights on doing this, I'd appreciate hearing about it.

Xed said:

eightzero said:

Xed said:

MacPro said:

Xed said:

It's too bad Apple wasn't able to have you input your prescription or go through a series of beautifully modernized visual tests that effectively cover what an optometrist would test so that Apple Vision could adjust the display output to match your prescription without the need for corrective lenses.

Or just enter your prescription information. Now that would be magic.

If they can do it, that would be an option, but remember that your vision does change over time so being able to do a vision calibration test on the device would be a great way to set it up.

I'm not really sure a display can run a optometric exam. I did opine this would be a great use of the device, but (and perhaps a OD can confirm) I think perhaps the physics prohibit this. If the image itself is blurred, I don't think any lens can correct it.

Couldn't the system just presents Image 1 then Image 2, then Image A and Image B, and so on, asking you to choose which one looks better until you end up with the best looking display for your visual acuity.

https://www.computerworld.com/article/2490626/vision-correcting-display-nixes-your-need-for-eyeglasses.html

Some form of adaptive optics could be the solution. If they can be variable, using the Digital Crown as the focus adjust knob during set up might be a way to "calibrate" (as well as allow for re-adjustment down the road as vision changes). 
https://www.deepoptics.com/technology

blastdoor said:

melgross said:

Greater than 5000 nits? That’s awfully bright. What we’re interested in is resolution, frames per second and latency. Unless AI isn’t giving, or first have all of his info, those are the specs that we all want to know.

Looking over this (https://pointerclicker.com/how-many-lumens-are-bad-for-your-eyes/#:~:text=In%20dark%20conditions%2C%2080%20lumens,luminosity%20of%20over%2010%2C000%20lumens.), I'm wondering if this is some kind of error. It sounds like 5000 nits (aka lumens) is close to being unsafe. (maybe they could call it a 'fried retina' display) 

I wonder if maybe it's more like the 'equivalent' of what a monitor would look like in a lit room at a reasonable distance. In other words, maybe the actual brightness is much lower, but because the light is coming from a screen an inch from your eyeball and sealed off from outside light, the experience is similar to looking at a 5k lumen light source, but maybe it's nowhere near actually being 5k lumen?? 

A nit is not the same thing as a lumen. Nit is also known as candela/sq.m and is often used to describe the brightness of an emissive display. Note the reference to a unit area in there. Lumens are usually used to describe the light output of a luminaire, such a light bulb or projector, where its not normal to stare into the beam or directly at the bulb (also inadvisable as the article you linked says). When the light output strikes a surface, you will get a certain number of lumens/area, depending on how wide or concentrated the beam is. Then, if you know the reflectivity of the surface (usually called "gain" when talking about a projection screen), you can derive nits based on how many lumens you have per area. (In cinemas, ft/lamberts is used to describe the light coming off of a projection screen).

Those outdoor LED billboards (emissive displays) are usually capable of producing up to 5,000 nit so they can be daylight viewable (a deep black between LEDs helps too). So 5,000 nit is not crazy...

I note that the article says "The brightness level Young quotes will be a peak level (emphasis mine) so it's not known what the level will be in regular use."

I do think that if one has AR glasses that are optically transparent with a direct view of the real world, with the glass's display being used to provide an optical overlay over the real world in broad daylight, you might need a display with a peak of 5,000 nit.

However, in the case of completely sealed goggles, this is different. If this is the case, I also wonder if there is some sort nit "equivalent" being made. A couple of hundred nits would surely be plenty in a completely dark environment, although it would probably be necessary for any given microLED pixel to peak above that average for optimal contrast ratios such as one finds in HDR.

eightzero said:

Hotels will not stand for this. They want you to pay for that entertainment system. I've seen HDTV's installed and locked into the wall to cover the HDMI (and other) ports. And you can bet their proprietary software will block anything else.

A lot of hotels have seen the writing on the wall--they see that guests have personal mobile devices to access their own entertainment services now, so the market for in-room on-demand entertainment is nowhere near what it once was, and there isn't anything the hotels can do about it. Now, as an enticement to stay at their property, many hotels have put in place solutions like Sonifi's that include a screen casting feature. Sonifi's solution is basically Google Chromecast which lets guests cast from their iOS or Android device to the room's TV. There are provisions for restricting access to only your room's TV and automatic disconnect when you check out.

So if the Airplay update will facilitate the use of Airplay instead of (or in addition to) Chromecast in hotel TVs, there may well be a market for it.

PS: Another application for Airplay involving "TVs and speakers you don't own" would be corporate conference rooms. Besides Apple TVs, there are several 3rd-party wireless screen-mirroring devices being used in conference rooms that have Airplay capability. Probably most use AirServer software, which also includes Chromecast capability and (FWIW) Miracast.

I don't have CarPlay in my car, but the other day I plugged my phone into a friend's 2018 Honda Accord and the CarPlay screen popped up (I was the passenger). I selected Maps and went on our way. One thing I noticed is that while navigating with Maps, it was not possible to turn the nav audio volume all the way down using the car volume control, even while Siri was speaking. Is this how it works in other cars, or is it just Honda? 

Also, it is not clear to me how (or if) it's possible to listen to the car radio while CarPlay is active. I didn't have a chance to experiment in the Accord. In my car (2016 Audi A3), my phone connects with BT. I have to select "Media" if I want to play music from my phone. Of course, Maps can be run at the same time and voice nav audio ducks music audio in this situation. However, even if I am listening to the car radio, if I am using Maps for navigation with my phone, the radio audio is ducked when the Siri voice kicks in (similar to how BT phone calls mute the car radio). Next time I'm in the Accord, I'll try to see how CarPlay/Maps interacts with the car radio, but I'm wondering if anyone out there can share their experience with this.