falconeyes

falconeyes

Lives in Germany Germany
Has a website at falklumo.blogspot.com
Joined on Apr 28, 2008

Comments

Total: 1124, showing: 41 – 60
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Somebody recently explained convergence to me ...
It's not just the horizontal and vertical pixel to be considered. It's the temporal distance between them too.
Video with a 180 degree shutter has low shutter speeds at even 60 fps (1/120s). 1/120s is good enough to have sharp pixels at 1080p, but not even 4k anymore. Therefore, convergence would require 8k@240fps RAW. That's still a long way to go, folks ...

Link | Posted on Jun 21, 2017 at 02:55 UTC as 13th comment

There is a much better article than what DPR provided to us here:
-> https://petapixel.com/2017/05/26/can-capture-worlds-smallest-gopro-drone

It provides details about the exact custom rig built, its size, its weight and about the stabilizing software too.

I therefore now doubt a DJI Spark could pull the same kind of stunt (cf. below).

It is a shame DPR ommitted all these interesting pieces to the story.

Link | Posted on Jun 21, 2017 at 01:35 UTC as 17th comment

This is insame indeed.
FWIW, its from a mini drone flown with a Goggles-like VR set in forward direction (no second operator).
Theoretically, the Spark should be the first consumer product being able to produce similiar footage, a proper skill set from the pilot assumed. Can anybody confirm?

Link | Posted on Jun 21, 2017 at 01:27 UTC as 18th comment
On article How water droplets came to life for a Gatorade ad (103 comments in total)

Quote from the UNIT9 site:
> "The technical infrastructure was designed and built in less than ten weeks, bringing together more than 20,000 individual parts and custom-made components. More than 5000 man hours were taken up in the design and build of the system. Our custom-made “rain rig” dripped water in complete sequence and harmony, to recreate the figure of a real athlete – in a liquid animation. Each unit contained 64 litres of water, with 8 units running at any one time – a total of half a tonne of water to bring the system together."

5000 man hours would translate to $500.000+ Unit9 must have claimed to produce the clip. We're talking a $1 million for a 1 minute clip here!

Impressive in both result and achievement. But it isn't a product photographer's ordinary work load.

Link | Posted on Jun 14, 2017 at 15:02 UTC as 8th comment | 1 reply
In reply to:

autoxnyc: I use Macs for post processing but I don't understand why Apple still have not made changes so people can run Photoshop on the iPad pros. What's the point of having the stylus if you are limited to iOS apps. I just pre-ordered the new Surface Pro for editing on the go with full version of LR and PS.

@JordanAT I don't see why Adobe wouldn't be able to do what Serif did with Affinity Photo. And PS is an aged software with a UI which feels old anyway. Adobe would be well advised to hie back a few good core software guys bringing the company back on track.

There soon will be another platform (WebGL/Html5 running local) to be supported by modern software. Adobe cannot stay on Win/MacOS forever.

But anyway, Affinity Photo for iPad probably is enough Photoshop for 95% of PS users and much more suited for a touch device. So, it already is too late for Adobe now.

Link | Posted on Jun 9, 2017 at 00:20 UTC

Hint: Google for "kink" and "VR".
Caution: NSFW!

EDIT: It may look like a stupid search / link. But people there have actually addressed "motion sickness" and "story telling" guidelines. It is a commercial porn service in beta stage discussed in the technical VR community.

In particular, they provide positional hints (stand, sit etc.) and may limit content to 180º or 220º.

Link | Posted on Jun 7, 2017 at 17:52 UTC as 19th comment | 2 replies
In reply to:

OlyPent: The view in these things is trash. Forget the cellphones. The need twin leica sl evfs

A Leica SL EVF would be just as pixelated.
The pixelation comes from the wide 100º to 120º FoV required for VR. This makes every pixel appear three times as big as normal.

The agreed resolution of the human eye is 1' (arc minute), meaning a 110º screen would require 6600 pixels or more then 6k. Per eye view! An entire 3D VR movie would be 2x 21600x10800 or 466 MP. Per video frame!

VR is a 16k application. 4k VR is a joke, 8k VR is amateur quality.

Link | Posted on Jun 7, 2017 at 17:43 UTC
In reply to:

Kwick1: I agree with the comment that this truly isn't Virtual Reality. Until a true Holodeck is developed, where all of your senses are used and it is truly immersive, we won't have VR. We just have 360 video, and crappy quality video at that.

Anything but upload of consciousness into a digital world at least as detailed as nature isn't truly VR.

Link | Posted on Jun 7, 2017 at 17:41 UTC
In reply to:

tkbslc: One of the biggest problems is motion sickness. In studies involving college students, up to 80% of Women and 40% men had moderate to severe motion sickness after playing a VR game or watching a VR video for 15-30 minutes. Your body's balance systems go haywire when your body thinks it is moving, but it isn't. It's hard to want to drop a thousand on a sweet VR system if there's a very good chance it will make you sick to play it.

The problem with 3D TVs mostly was bad screen quality and an exaggerated 3D effect.

With a passive and bright 3D OLED screen and a movie with moderate 3D effects, the viewing experience actually is very pleasurable. Ironically, you can't buy such TVs anymore in 2017.

The focusing is a smaller issue as otherwise, it would create headache in 2D movies too (eyes trying to refocus between foreground and background).

But the parallalax adjustment can cause headache indeed. About 25% of viewers report about issues.

OTOH, ships cause motion sickness and there still are ships ;)

Link | Posted on Jun 7, 2017 at 17:37 UTC
In reply to:

alaska_tim: Regarding point 6, the differences between a technology that allows you to freely move around a virtual space, and 360 degree photo/video, in which you are stuck in the center of a spherical space (I include Facebook's parallax tech here) may not be limitations, so much as differences between related but separate media analogous to the differences between photography, cinematography and video games. Our expectations of each should be different, be they conventional or 360 degree. Also, as playing multiple photographs in rapid succession is cinematography, 360 cinematography becomes a VR video game when you can walk around a virtual space.

Also do not underestimate points 1 and 3 as they relate to 360 photo/video. Stereoscopic photography has been around since the 1860's. This and other 3D viewing tech have never caught on precisely because they require special equipment (e.g. glasses) to enjoy. So long as this is the case 360 degree photo/video is unlikely to achieve wide adoption.

I have worked on this.

Using 100+ cameras allows to capture enough data to record an animated 3D scene which can be rendered into whatever perspective dynamically.

I used it to create fly-around/-through movies through buildings not accessible otherwise.

The problem is that it is VERY compute intense and the reconstructed 3D scenes have unsufficient quality for cinematographic content. Esp. areas with lack of detail need attention from algorithmic research.

Link | Posted on Jun 7, 2017 at 17:27 UTC
In reply to:

autoxnyc: I use Macs for post processing but I don't understand why Apple still have not made changes so people can run Photoshop on the iPad pros. What's the point of having the stylus if you are limited to iOS apps. I just pre-ordered the new Surface Pro for editing on the go with full version of LR and PS.

Did you watch the keynote at all?

The REAL wow effect was the presentation of new Affinity Photo for iPad on stage. What colorblind said above. It was an amazing demo of what can be done on a tablet now.

Point is: the UI of a tablet needs to be much different from a desktop or notebook. Adobe would have to rewrite Photoshop from scratch. What they don't do, they rather ship gimmicky apps instead. OTOH, Affinity Photo is the real deal now on a tablet.

Adding a MacOS emulation box into iOS wouldn't solve the problem. The resulting software would be awkward to use. Very un-apple like.

Link | Posted on Jun 6, 2017 at 22:58 UTC

Swiss jokes are best. Slow but best :)

Link | Posted on Jun 1, 2017 at 06:39 UTC as 73rd comment | 1 reply
On article The DJI Spark is a $500 HD mini drone (96 comments in total)
In reply to:

privater: So this 1st generation of Spark is 300g, almost meet the FAA drone registration lower bar: 250g, maybe next generation will bypass the regulation.

The 250g limit aplies to many countries, not only US. E.g., in Germany, it applies to amateurs too. Moreover, the law can easily be changed and override the court ruling.

Seems like DJI actually welcomes the registration requirement and possibly made the Spark cross the 250g limit on purpose.

Link | Posted on May 25, 2017 at 07:34 UTC
On article The DJI Spark is a $500 HD mini drone (96 comments in total)
In reply to:

privater: So this 1st generation of Spark is 300g, almost meet the FAA drone registration lower bar: 250g, maybe next generation will bypass the regulation.

The battery is 92g alone. I am pretty sure there will be tuning kits soon bringing the device to 249g :)

For a start, remove the hood and drill holes ...

Link | Posted on May 24, 2017 at 23:05 UTC
On article What gear do filmmakers rent most often? (15 comments in total)

This is a Sharegrid infomercial. I still liked it, they have a cool idea. I am just wondering though why they aren't adding other locations and other type of gear more agressively. Wish them success.

Link | Posted on May 24, 2017 at 08:40 UTC as 1st comment

The article is based on the current state-of-the-art.

However, speaking as someone who developped a contrast-AF algorithm, it is a bit short-sighted. Contrast AF doesn't need to hunt for optimal focus necessarily and it could easily outperform phase detect at severely defocused scenes. The depth from defocus approach may give you an idea. And then there are the dual-pixel AF sensors which still await their proper algorithmic exploitation.

On the mechanical side, consider piezo-driven sensor-hubs (in body, not unlike in-body stabilization, only z rather than x/y-direction). It would do the final focus fine tune operation which all lens AF motors fail at due to mechanical tolerances in the micron range. Ring-type motors are still required for FAST AF with fast tele lenses, mirrorless or not, at least for 300/2.8 class lenses.

Moreover, a lens made for a mirrorless legacy mount could retract into (or use) the empty space.

But will legacy Canikon ever be this innovative?

Link | Posted on May 24, 2017 at 08:19 UTC as 45th comment | 3 replies
In reply to:

Dragonrider: Just a taste of things to come for the VR industry. VR is just the next attempt at 3D and the last 4 or 5 attempts have failed as will this one. Disney CircleVision theaters are cool to visit, but strapping a headset on and trying to watch a 360 degree panorama in 3D is going to create one huge headache (literally). Our eyes focus with PDAF just like an SLR and when depth information is presented on the same plane, our eyes try to focus on the virtual position that the depth information is suggesting. The problem is that the focus plane of the screen/viewer doesn't move so our eyes actually go out of focus. The greater the scope and depth of the image, the greater the focus error and hence the greater the headache. 3D works well to present a small amount of depth information (i.e. with the DOF of our eyes at the presented brightness), but when the monster flies out of the screen and up to your seat, it makes your head hurt.

3D attempts have been failing and the last one did too, correct.

However, I see 3D eventually arriving just as color did.
If you ever watched 3D on any recent 65" 4k OLED you know what I mean ... most of the issues are gone, except for the glasses snap-on and maximum brightness achieved (best with a dimmed room). No ghosting, flickering, loss in resolution or headaches. We're really getting there ... over time.

Ironically, 3D OLED TV sets have been discontinued on the market.

Industry has a tendancy to hype things to death.

Link | Posted on May 24, 2017 at 07:35 UTC
On article Nikon reshuffles management structure (248 comments in total)

No one responsible for the camera business - bad structure

Link | Posted on May 20, 2017 at 12:51 UTC as 29th comment
In reply to:

falconeyes: Thanks.
I esp. appreciated the samples which cannot easily be stitched from two vertical slightly narrower frames. Like Aurora or first waterfall.

Many waterfalls, yes. But a few combinations of exp.time and waterfall are harder to stitch. Those who have changing flow patterns.

Link | Posted on May 8, 2017 at 21:41 UTC

Thanks.
I esp. appreciated the samples which cannot easily be stitched from two vertical slightly narrower frames. Like Aurora or first waterfall.

Link | Posted on May 7, 2017 at 16:58 UTC as 36th comment | 2 replies
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