September 21, 2014, 06:18:20 AM

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Messages - Lawliet

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16
It's that simple.

Only to those who don't understand how the resolution tests work. Those misconceptions lead to fallacious assumptions about which lenses are suitable for higher res sensors and which are not.

17
f1.4? Pfffft.  f1.2!  ;)

Only if you remove the secondary aperture in the sensor cell. ;)

18

There is not that many lenses that satisfy the 36mp nikon.
http://www.dxomark.com/Reviews/Best-lenses-for-the-Nikon-D800E-The-sharpest-full-frame-camera-ever-measured/Best-lenses-on-the-D800E


You're repeating the same mistake made a few posts earlier...so much for oversimplification.

19

You miss that upping RAW filles needs a lot of bandwith.

Just send a HD to amazon, maybe once per month.
Seriously, thats part of the glacier service, it's designed for multi-TB of data on a regular base after all.

Quote
Here in Europe where i live 60KB/s upload speed is the norm outside big cities.
That´s DSL6000 upload speed.
LTE spreads fast, it's just a matter of time :)

20
Third Party Manufacturers / Re: And what does Canon do?
« on: September 05, 2014, 09:29:28 AM »

I agree that the D3/D4 sensors are custom built and perform very well. However, will a Nikon D4 user be satisfied when a new D4 would come with only a 16Mp version. To make clear, I would have no problem with that as I also have a 1Dx with 'only' 18Mp. it's not only the pixels that is counting. It's the complete system. Would the same people say over here then that the D4s is 2 generations behind on the D810 with Sony's sensor?
They have access to a fab that can handle 35mm sensors and at least two companies who create smaller sensors that perform on par with Sony's. Working something out shouldn't be impossible. It's hard to say no to the company that makes the machines you need to make your semiconductors after all ;)
Not the most pleasant way, but strategic deterrence involves options that neither party wants to become reality.

The two generations isn't about the resolution, but about signal quality. Its much easier to get a picture from a D4 past the editors then one from a 5D3 w/o debanding. And the debanding in turn softens the image in rather unpredictable ways. And costs money.
D8x0 otoh/additionally is more about not having to go to the Phase One, with its associated costs.

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I agree fully that Nikon is multi sourcing what is a very good purchase strategic, however they are not buying the same product at all those places. The Sony Exmor with the big Mp is really top. If that source would be cutted off, they have a big problem for the Dxxx and Dxxxx series.
The Toshiba sensor is good enough to keep people from noticing that some of the current Dxxxx aren't Exmor. ;)

As for buying Nikon - they are part of the Mitsubishi group, and those folks wouldn't want to see their supplier of lithography equipment and such getting under the control of someone else.

Thats maybe the meta-part of the story - it's not that Exmor is so extraordinary good, its just the best known, but that all but one of the others are in the same ballpark.

21
Third Party Manufacturers / Re: And what does Canon do?
« on: September 05, 2014, 08:11:51 AM »
A company like Nikon has strategic a big problem. They are fully dependent on sensors of Sony. What if the next release of sensor of Sony is only kept for Sony itself. Then Nikon really has a problem.

Not exactly, considering that they have more then one supplier.
Currently Sony, Toshiba and Aptina are on the list. The sensors of the D3/D4 custom built and perform quite well despite not being Sony's.
I.e. Sony dropping Nikon would imply giving that business to their competition & at least damaging if not burning some bridges. Quite a steep price to play for a short term advantage.


You have to look at the whole system today to justify buying Canon.

Or for a long term perspective: the whole system, and the surrounding ecosystem, a few years down the road.
Somewhere between the current offerings of S&T in the lens department and the chinese flashgun tools or AirTTL the bodies became a much stronger factor. Other unique points of sale are being reduced to a few niche cases(and over there some irony lies in waiting).

22
EOS Bodies / Re: Is Canon now two generations behind Nikon?
« on: September 04, 2014, 06:43:47 PM »

I bet it would sell a ton. :P I'd buy one.

Considering the number of A7r+Metabones-"kits" our local dealers sell, resp. the related preorder lists - quite plausible. :P

23
EOS Bodies / Re: Are you planning to purchase a 7D2
« on: September 04, 2014, 03:37:52 PM »
I'm ask in favor of having a good local option, but it feels like my local store is trying to rip me off more than to be a service to me.

Items low in material value, that require the same effort(and cost) in handling/paperwork/stockkeeping as expensive stuff. Low turnover for items that take up space doesn't help either.  For inexpensive stuff thats a nasty percentile price penalty.

OTOH local stores having for example B1s in stock is convenient, and if you're good at negotiating you might get the small stuff mentioned as complimentary :)

24
But, it is only with the best (1050+ lines average) lenses that it makes the difference between a 36MP and 22MP.

The joy of quoting numbers without understanding them...

Those tests simply measure when contrast falls under a certain threshold, but that doesn't mean the lens can't resolve structure in hair, skin or fabric, just that the contrast is slightly lower. Nice to compare relative performance, worthless for the question at hand. Well, actually less then worthless as it leads to wrong conclusions.
(And then came frequency seperation based techniques and made the reduced high frequency contrast an even more moot point.)

To find out whether a lens can benefit from higher sensor resolution one has to look at the different types of aberrations and their respective cumulative effects - a much more complex endeavor.

(Also I don't think that the ability of my strobes to freeze motion depends on the support of the camera. Although the shutter plays a role because of the shorter flash duration required to balance against the ambient.)

25
EOS Bodies / Re: A Rundown of Canon at Photokina
« on: September 04, 2014, 10:51:14 AM »
So, no, it is not only a gimmick for people who know what they do with video.

Let's not forget chromakeying - greenscreen is well within the reach of student&hobby productions - getting rid of those halos is so much easier if you're allowed to have masks without a multiple pixel wide blur.

Would the 8MP-sensor in the C100/C300 be in there if aquiring that additional data wouldn't make sense in the first place? The very same rationale applies to other cameras independent of the shell they're housed in.

26
That's all fine and dandy but in the Real world,  hardly of any use. Only a handful of lenses actually can resolve the details of a 36mp sensor. Forget about a 50mp sensor on that Sony glass.

You're trying to fit an analog dimension in a boolean descriptor, that doesn't work that well. Even if we don't think about the implications of demosaicing or external influences like operator error.

Not that 36 and 50 are that much of a difference, the D810 gained almost that much due to its improved mirror&shutter action. A new sensor would be a good opportunity to incorporate an EFC...instant gain.

27
EOS Bodies / Re: A Rundown of Canon at Photokina
« on: September 04, 2014, 08:52:36 AM »

New battery, slightly better capacity.... You can use the old LP-E6 in the camera.
And an opportunity to mess with 3rd party products - a few angles in the smart communication, if we take the ink cardridges as a reference.

28

In the face of new evidence I'd be happy to change my understanding and position on the topic.  Until then, current lenses are likely more than sufficient for 50mp sensors.

Also factor in that your average sensor today doesn't record color at its full resolution. Calculating the max. resolution for a monochromatic image would net you the number of RGGB-groups you want on your sensor. 8)

29
EOS Bodies / Re: A Rundown of Canon at Photokina
« on: September 04, 2014, 08:26:24 AM »

Yes, other brands do offer 4K for consumers - as it is a fairly easy gimmick to sell people on even if it has no benefit.

You're forgetting how bad for example canons HD video is in terms of actual detail retention. An artefact of the whole reading only parts of the sensor thing.
Even if you don't have/take advantage of a 4K-device for output rescaling the footage will get it closer to actual 4:4:4 without unwarrented blur for common fullHD.

30
You have to think about the costs to store data safely and efficiently, not only that have a machine that can deal with loading the images quickly for efficient workflow for PP.

At the same time factor in the time it costs to do the cleanup necessary to match the results of competing data sources. Considering reasonable rates thats the biggest factor in the equation for me.

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