Contact lens camera.
- By Ozarker
- Third Party Lenses
- 0 Replies
http://losangeles.cbslocal.com/2016/04/05/samsung-patents-contact-lenses-with-built-in-camera/
unfocused said:The promise of the Lytro was that it was not necessary to stop down the aperture to place everything in focus, but rather to shift the focus from one subject to another without changing the overall depth of field, so that subject "A" would be in focus under choice "A" and subject "B" could be in focus under choice "B."Refurb7 said:For the cost of exactly $0 every photographer already has the solution to those problems... It is stopping down the aperture.
Plus, stopping down the aperture doesn't work in many real life situations, such as birds in flight or sports, where you need a high shutter speed to stop the action and you are limited by the high ISO capability of your camera. And, frankly if you are shooting with a long telephoto lens, even stopping down to f32 may not give you sufficient depth of field to keep a rapidly moving subject in focus.
JMZawodny said:unfocused said:Refurb7 said:...you only had to think about it for 30 more seconds to realize that almost no one wants to actually do post-exposure focus selection....
Really? So you've never shot a bird in flight where the focus was on the wing instead of the eye? Never shot a sporting event where the focus was on the ball instead of the player's face? Never shot a portrait where the right eye was in focus, but the left eye was not?
I think almost everyone would like to "actually do post-exposure focus" tweaking. The problem was that the technology was not sufficiently developed to really achieve its promise. I suspect someone else will pursue this eventually. If it is ever perfected, it will revolutionize photography in a way that would make digital seem insignificant. Imagine never again needing sophisticated autofocus systems or worrying about autofocus adjustment.
If only it worked that way. The ability to focus these cameras comes only in discrete steps. The marketing hype suggested it worked the way you wish it would have, but the reality of the math was less forgiving.
Yes, of course, the technology was nowhere near where it needed to be to be really useful. Indeed, I suspect that was one of the problems – the cameras were released prematurely. I would hesitate to even say they were "beta" versions.
But, that doesn't mean it did not have tremendous potential if it were fully developed (assuming that is even possible).
I just take issue with the idea that "no one" would want to do post-exposure focus correction, when in reality the ability to do so (if it could be perfected) would be far more disruptive and significant than the digital revolution in photography.
Stu_bert said:Thanks for sharing
"Under Phase V of its Excellent Global Corporation Plan, a five-year initiative launched in 2016, Canon aims to embrace the challenge of new growth through a grand strategic transformation"
Indicates to me that this is the first of many such acquisitions, and although the photographic segment may shrink and receive less funding in future, a healthy Canon should ensure long-term prescence in the photo industry.
martti said:An upgrade: Four emails sent, no reaction except the automatic patellar "Dear Customer" -thing.
So I called and explained that there really was one item that was delivered which is very nice but two are still missing. It's been two weeks until this idea penetrated.
I spoke english. With my Spanish...I did not try.
He promised to get the issue settled in five working days. Whatever it may mean.
extide said:So, I currently have a T2i/550D, and just for curiosities sake decided to look at the noise sample images back to back vs my cam. http://www.the-digital-picture.com/Reviews/Camera-Noise.aspx?Camera=1044&Test=0&ISO=1600&CameraComp=688&TestComp=0&ISOComp=1600
I am really surprised that they are so similar. I mean, in most of the samples, besides the higher resolution, it's hard to really tell which is which. The T2i has one of the very earliest 18mp sensors, I would have thought in the several years since there would be a more notable difference!
Maximilian said:I'm glad to see everyone back again posting.Click said:I'm glad to see you back again, serendipidy.![]()
I'm still missing my German fellow Marsu42 :-[
(last post from Oct. 2015 but seeing him active at March 18th)
JohanCruyff said:I see: The Digital Picture confirms the sharpness of the Tamron: http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=122&Sample=0&FLI=0&API=0&LensComp=1003&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0[email protected] said:JohanCruyff said:Thank you for sharing your impressions!![]()
When you decided to replace the EF 35mm F/1.4 II L, did you consider the EF 35mm F/2.0 IS, which share many features with the Tammy (weight, cost, IS etc.)?
I did think about it, but was looking for something significantly sharper. I haven't played with a copy myself, but I did look at test images online. I got spoiled by the Sigma 18-35 on my crop body. I even used it on my 5D3, and it worked pretty well at 35 and was deadly sharp. To justify buying a lens for the full frame kit, it needed to be a sharpness equal or superior to the Sigma. That's why I started with the new Cannon 1.4 II.
It seems that Canon 35mm's corners reach the Tamron ones when both are stopped down to F/5.6.
Bdube said:jrista said:Pieter said:epsiloneri said:Actually, surveying for nearby supernova remnants in H-alpha might be a pretty interesting project scientifically in itself for this Dragonfly.
Yes - the problem is that we'd have to get different detectors, with much lower read noise. With narrow band filters the read noise is no longer smaller than the noise from the sky background, and the setup is no longer competitive.
Any chance you guys have some forward knowledge of larger ultra-low-noise sensors coming out? Sony's newer ICX line are pretty nice, with very low dark current, and pretty low read noise (~5e-?). But the sensors are tiny. Really tiny, as in 1/3" or maybe 1/2", which is about half the size of a KAF-8300 and about 1/5th the size of a full-frame/KAF-11002 sized sensor. Would be really nice to know that Sony has some larger sensors based on their new low-noise technology coming out...
Pieter said:We are considering other projects to augment what we're doing now - particularly when the moon is up and our main science is on hold. We're also hoping to build a bigger array at some point in the future - with 50 lenses we'd effectively have a 400 mm f/0.4 lens, with a 1m aperture.
f/0.4 @ 1m...now that would really start to surpass, just in specs, some of the really large earth-based telescopes for sensitivity.
The gains from lens arrays are not so perfect; for example, the large binocular telescope uses 2 large telescopes and achieved only about a 40% gain.
Don't have any link to any video... since it's just an image from a post in the facebook. Anyway, he did mention that it'll be available to the public soon...tpatana said:weixing said:Hi,
Saw someone post an image taken using the in-camera 4K video grab from a clip shot with the 1DXmk2 in the facebook. May be some already have it??
Have a nice day.
Not sure if you noticed, but the link you provided to the video is missing from your post.
backcountrygirl said:I found this image on the FotoDiox Facebook page. It was posted on March 8th. It shows that huge 186mm filter holder. I think they're probably still waiting for the filters themselves to show up. It looks like a damn dinner plate, but that's what it's going to take for the Canon 11-24mm lens.
I think more 85 users would be willing to jump ship to a Sigma Art than 135L owners. Remember, the 135 is 'magical'.