tron said:
How about AE linked to AF point? or Face recognition for exposure engine or Eye detection for AF.
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Canon EOS 5D Mark IV Talk [CR2]
- Thread starter Canon Rumors
- Start date
How about AE linked to AF point? or Face recognition for exposure engine or Eye detection for AF.
AvTvM said:scyrene said:
Funny, I can see so many potential FIRSTS for Canon, it's mindboggling ... Just a few:
* first FF mirrorless FF camera without any mechanical moving parts ... mirror flapping, no shutter curtains shuttering, no iris blades convulsing ...
* first lightfield solid state camera with 100 MP spatial resolution
* or much more humbly, first Canon DSLR with real 13 stops DR ...
Well the third is just a slight improvement, so you'd have rejected it as not a 'true' first, surely?
Um, how does a camera (lens) without iris blades stop down to narrower apertures?
And sure, a light field camera is a big departure, but wouldn't be part of the 5D series. And besides, we've yet to see if it's truly the way things will go. Plenty of new technologies fail to deliver on early promise.
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tscholent said:
I'm not seeing filmmakers move away from DSLR's towards hardcore production cameras that require tons of expensive gear and are not even remotely as run and gun - DSLR's are still the go-to for indie filmmaking because of how easy they are to use and operate. Blackmagic requires at minimum a cage to use, along with plenty of other stuff.
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scyrene said:
Solid state, no moving parts - e.g. along these lines:
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6924547&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6924547
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"This work proposes an innovative solid-state variable micro aperture with no moving component. The aperture size can be varied by the change of applied voltage. PDLC (polymer dispersed liquid crystal) plays an important role in tunability of this device. By combing a micro dome structure and the PDLC, the tum-on threshold voltage at a farther radial position to the aperture center can be made higher than that at a closer position. This way, the aperture can open gradually as increasing the voltage."
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scyrene said:
It is making a liquid crystal display go opaque, not unlike the display on a digital watch. No voltage and the glass is clear. Apply voltage to preprogramed "pixels" on the glass and you have a controlled pattern of whatever diameter for whatever duration that you want. It also sounds like the display is dimmable, which could lead to some new creative effects, as well as an electronic ND filter. So the question is, can they do it without screwing up the IQ?
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brad-man said:
Or: "will it screw-up IQ more than an Iris aperture does?"
There will definitely ample opportunity to observe advantages and disasvantages of solid state variable aperture "mechanisms". It is not ready for primetime yet. Like so many other innovative features it will come first in smartphone cameras and last in larger sensor cameras and dead-last in "innovative Canon EOS DSLRs".
Certainly not ready in time for 5D4, so i'll not go further OT on this. It was just to answer scyrenes' question re. Possibilities for apertures without moving parts.
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AvTvM said:brad-man said:
Or: "will it screw-up IQ more than an Iris aperture does?"
There will definitely ample opportunity to observe advantages and disasvantages of solid state variable aperture "mechanisms". It is not ready for primetime yet. Like so many other innovative features it will come first in smartphone cameras and last in larger sensor cameras and dead-last in "innovative Canon EOS DSLRs".
Certainly not ready in time for 5D4, so i'll not go further OT on this. It was just to answer scyrenes' question re. Possibilities for apertures without moving parts.
It's intriguing, but I'd put it in the category of ND filters, not aperture. It won't affect the depth of field, which is a primary motivation for stopping down.
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scyrene said:
Of course it can create all DOF and optical effects an aperture can create. In its simplest form it will also just be a round hole of user selectable diameter blocking part of the lightpath. But ... It will be *perfectly round at any opening*.
And possibly we may even choose, whether the opening should be perfectly circular for great bokeh oof highlights (no cat eye shape) or with with points around the circumference for great sunstars when desired - with any number of points/rays.
Or user selectable choice between clearly defined, hard edge between opaque and translucent area or a soft transition zone.
Or a heart shaped opening for engagement shots ... Or any other optical effect possible with full user control over size and shape of that aperture opening ... programmable solid state electronics rule supreme over 19th century moving parts photo-mechanics. Shuttering iris blades, guillotining shutter curtains and flapping mirrors ... Be done with!
Except at Canon. Not even their 5D mark 99 will ever be innovative ...
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AvTvM said:
Oh I see, so it would form a dark ring, that makes more sense.
You're excited by innovation, and that's great. So am I. But I have more reservations. If something is new, that doesn't mean it is better. Many innovations promise a great deal and fail to deliver. And many technologies are reliable after a long time.
So what if a technology was invented in the 19thC? It's been refined ever since. And things like aperture blades are extremely reliable and cheap. Maybe one day this will be too. But a company shouldn't abandon what works for every new thing that comes along.
(I take it you don't use electricity from coal or gas, for instance, as it's generated in an awfully old fashioned way. Heck, even nuclear energy is a good seventy years old now).
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scyrene said:
Hehe, i live in a beautiful country blessed with plenty of water and high mountains. Hydroelectrical power is our game. We got the perfect rechargable battery in combination with Solar energy harvested in Southern Europe and wind parks in northern Europe/off-shore.
At last and finally and before i die i want a truly electronic, truly digital, truly solid state camera. To me it is the only adequate tool in the 21st century to capture incoming photons and transform them into images. I want a total and ultimate cut from the tradition of photo chemistry, analogue stuff, moving parts and mechanical shenanigans. Although i do fully appreciate how innovative those solutions were 100+ Years ago. And how beautiful and elegant they are - in a museum. But not in my next camera, that Canon wants me to plonk down 3000 or 4000 of my hard-earned Euros (net, after paying heavy taxes, as i am not Conon or another multinational company that can legally avoid taxation).
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AvTvM said:
Hydroelectric is a pretty old technology too... ;P
Once again you've not explained why non mechanical=better, but I accept that is your opinion. Please understand most other people just want solutions that work
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I do not want a particular camera but there are pictures that I'd like to take.
What does it matter is a picture-making machine uses cow dung or wind power...that's not what counts but the pictures.
pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures
f them cameras
What does it matter is a picture-making machine uses cow dung or wind power...that's not what counts but the pictures.
pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures pictures
f them cameras
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scyrene said:
" Or is it making something more opaque?" That would be a neutral density filter. Aperture/Iris is a hole, and it affects DOF, amount of light, and often sharpness of the image. Some plastics might be flexible and controllable enough to flex to different aperture sizes.
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Etienne said:
it is a hole! A transparent circle in the center that can be varied in size, surrounded by an opaque/light-blocking area. Just like any iris/aperture. Only difference: no moving mechanical parts (no iris blades).
Ramifications (as far as I expect them):
* exposure and DOF control exactly as with old-style mech iris
* diffraction: to be seen. Depends on how "hard-edged" or "soft/graduated" transition zone between transparent center and opaque surrounding area is
* no pointy stars, since opening is perfectly circular at any size (I normally don't care for them anyways, they went out of fashion 100 years ago)
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scyrene said:AvTvM said:brad-man said:
Or: "will it screw-up IQ more than an Iris aperture does?"
There will definitely ample opportunity to observe advantages and disasvantages of solid state variable aperture "mechanisms". It is not ready for primetime yet. Like so many other innovative features it will come first in smartphone cameras and last in larger sensor cameras and dead-last in "innovative Canon EOS DSLRs".
Certainly not ready in time for 5D4, so i'll not go further OT on this. It was just to answer scyrenes' question re. Possibilities for apertures without moving parts.
It's intriguing, but I'd put it in the category of ND filters, not aperture. It won't affect the depth of field, which is a primary motivation for stopping down.
Re: Lens with apertures without moving parts
http://www.bhphotovideo.com/c/product/1132028-REG/lomography_z230c_petzval_85mm_f_2_2_lens.html?gclid=CM7judyY7MwCFU9cfgodOOoLgg
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If the speculation is right about an August annoucement this would be strange timing. Canon annouced the
5D MKIII on March 2nd 2012 and the camera went on sale at the end of the same month, it also coincided with 25 years since the EOS system launch and Canon 75th anniversary.
Photokina begins this year on September 20th slightly later than recent years and likely a good month after an August annoucement, contrast that with the 6D launch which was September 17th the day before Photokina 2012 (it went on sale at the end of November).
If Canon do annouce the 5D MKIV in August is this allowing for annoucing the 6D MKII just before or during Photokina 2016 with a later on-sale date much like the 1D X MKII and the original 6D.
Both these cameras are the oldest in the line up of both DSLRs and the M series cameras although the 7D had the longest recent production cycle being five years (the 7D MKII will not last that long given the Nikon D500).
5D MKIII on March 2nd 2012 and the camera went on sale at the end of the same month, it also coincided with 25 years since the EOS system launch and Canon 75th anniversary.
Photokina begins this year on September 20th slightly later than recent years and likely a good month after an August annoucement, contrast that with the 6D launch which was September 17th the day before Photokina 2012 (it went on sale at the end of November).
If Canon do annouce the 5D MKIV in August is this allowing for annoucing the 6D MKII just before or during Photokina 2016 with a later on-sale date much like the 1D X MKII and the original 6D.
Both these cameras are the oldest in the line up of both DSLRs and the M series cameras although the 7D had the longest recent production cycle being five years (the 7D MKII will not last that long given the Nikon D500).
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