December 27, 2014, 04:28:41 PM

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Messages - vscd

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1
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I thought the Zeiss MF zealots claimed that AF was left off because it compromised image quality? I don't think you can just slot in AF motors/algorithms (or IS/VR for that matter) into an existing - supposedly near-perfect - MF design. Tech guys, right?

Right.

You can adjust metal tubes with very tight differences way better than an USM driven Autofocus, but hey facts don't count, just blame something in a strong and loud font, on a recent board and you will be heard ;)

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You know, if Nikon wanted to kill Canon tomorrow—and I mean completely end them, in all likelihood—all they would have to do is formally license their autofocus protocols to Zeiss.  Canon would suddenly be facing a company with better cameras and better lenses, and they'd have to either compete or die (or both).

Haha. You forgot one important fact in your equation. Nikon is based on photography, only. Canon is a huge company where photography is just a minor part of the income. That's also a reason why they don't focus on everybodys body-wishes all the time. And to be honest, Nikon already gave up at the sensor-war. They couldn't compete.

There is an old phrase...Why should the oak tree care if the pig is scratching on it's trunk? ;)

3
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 26, 2014, 01:09:06 PM »
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That calculator is wrong witch is trivial to check when you realize that it means you can't get a sharp shot from any lens in a 70D or 7D2 at f/5.6 (which is obviously false).

I didn't say that you cant get a sharp shot beyond f5.6, it says it wont't get sharper until it runs into diffraction. So the resolution peaks @f5.6 if the lense is constructed well otherwise. Please go to a lensreview side of your choice, for example http://www.photozone.de/ , select any Canon APS-C lens and show me one example where you get better results on f8 or f11 than on the center of f5.6. 

On Fullframe you'll get into this 1-2 stops later (with both sensors having an comparable pixelpitch). This peak will go even lower to the max-aperture when you minimize the pixel more and more. But you don't have to believe on physics, just buy and belive in your mojo.

4
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 26, 2014, 08:12:22 AM »
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Any larger format has less dof as you are using a longer lens for a given framing

But you can compensate the lower DOF easily with a smaller aperture. The resulting loss of light can be compensated with a higher ISO on the larger sensor.   I don't want to get with a mediumformat camera into the field hunting insects, but technically the smaller sensor gives you no advantage except of the size and weight from the body, build around ;)

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I wonder about that. When you look at the comparision shots between the Canon 5DIII and Nikon D810 the difference in resolution and detail is so plain to see that its scary.

I don't speak about the difference between the 24MP and the 36MP, there is enough room for the Nikon to get the results you mentioned. But even the Nikon users know which lense is capable of the best results (ask D800/D810 owners). I speak about the problems of a real 50 MP Sensor, not 36 MP. 33-36 MP on Fullframe is (in my opinion) the upper spot, together with the best glass.    50 MP is quite another world.


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EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 26, 2014, 07:12:57 AM »
...and even if he got lenses with the best IQ and Resolution he would run into diffraction at F4 or more.

http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm

So the lense should be tack sharp while shooting wide open @f2.8 or faster. This would be the next physical challenge ;)   In some studio environment this could be done theoretically, but the cost will explode.

There was and still is a good reason why photographers with needs >40MP always switch to medium format. It's about pixelsize and diffraction limits. If you push the small full frame sensor into it's limits you loose on every other aspect like ISO, Color Accuracy, Depth of Field (Diffraction). Is it worth it? Sometimes I don't want to be in the skin of the manufacturers. They have to please the customers, regardless of the sense of it  :-\

6
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 26, 2014, 06:37:44 AM »
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I advise you to take DXO's equivalent megapixels rating for lenses the way you take campaign promises from politicians.  It's just about as accurate.

It's just a starting point, you can get similar results with imatest or dpreview. It's basically all about pixelsize/microns. The Diffraction Limited System [http://en.wikipedia.org/wiki/Diffraction-limited_system] gets you anyway ;)

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Almost all Canon's current lenses would do just fine on a 50MP full frame sensor, and the better ones would excel.

Muahahaaa... no way.

7
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 26, 2014, 05:45:46 AM »
The high pixel sensor will cause serious problems on the optical side. For example, if you go to DXOMark, there is nearly no lens able to match the 36 MP Sensor of a Nikon D810. The few who can resolve at least about 30 MP, are expensive primes... and even the Otus can't fully get the 36 MP on the RAW.

The most used Zooms like the 24-70 and 70-200 are between 20-27 MPixel, so if you really "need" 50 MPixel you should also change your daily workflow. For landscape shooters primes are mostly the way to go, but for the rest there is no way to take advantage of the sensor in any way. But you probably get the backdraws like 80MB RAWs and a slow fps-rate.

Thats also the reason why the Sigma Merril cameras are resolving details like a Nikon D810 (sometimes more, sometimes less). They just need lenses for 15 MPixel to get details around 30-33 MPixel (45 MPixel as claimed are far too much in my opinion). I recently read some optical document about the limitations of optical systems and there is a sweet spot around 30-32 MPixel for fullframe...  of course you can get workarounds on this as the PhaseOne/HasselBlad Back are already doing it. They shift the sensor for half Pixels and interpolate the results. Maybe Canon introduces something like that, the shifting of the Bayer-Layer (without the groundlayer) was also a recent patent.

For me, the pixelcount is nothing to be concerned about, I like the way the Sony A7S "thinks". If I need more resolution I stitch together with longer focallenghts, but I know this is just for wider angles and without movements. I'm really interested in the next Canonproducts. For the rumours about a new EF-Line... I think there is a mirrorless fullframe Line coming, adaptable to standard-EF with an adapter.

8
Lenses / Re: Which Canon Full Frame Camera is For You?
« on: December 23, 2014, 04:05:58 AM »
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Hopefully it comes with a real tilty screen and not the cheap half-baked one-axis tilt.

Please just speak for yourself. I really would be frustrated if a Tilt/Screen will be on the next fullframecamera. The times for a buildin Tiltscreen are gone (for me) and most Pros I know don't like it. It's taking more space and is prone to get broken (even if this is unlikely today).    There are so much solutions with better and larger screens on the hotshoe, connected via HDMI. You can even use every smartphone with WLAN to reach even more impossible viewingangles.

But 99% of the time I wouldn't like to see this on my cam. And no Flash eighter.

9
>I have been using the LR3...LR5 almost exclusively for quite some years now.
>Could you briefly give me some reasons to start using the DPP?

It's free of charge and you don't have to import the pictures just to adjust the
brightness, which is frustrating in LightRoom.

10
EOS Bodies / Re: Canon to Continue Using Canon Sensors in DSLRs
« on: November 03, 2014, 01:01:57 PM »
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Most pros could not care less about the slight dynamic range differences between sensors.

That's right. I even would go further... they know, that the difference changes in higher ISO-Ranges. For sports- or Indoorphotography you usually don't use anything below ISO800. On sportevents because of the longer lenses and inside rooms because of the available light.

So let's check the differences of two nearly equally released and categoritzed cams:



So, the (quite huge) difference on ISO 100 flips to an advantage of Canon-Sensors from ISO 800 and upwards. No one tells you this, but it's the opposite of what the forums are telling on and on and on (Hi Drones!). I even wonder why DXO makes no intersection between lo and high of the (unpushed) ISO-Modes.

Canon is traditionally an autofocus/sports aranged brand, I think. So, from their side the sentence "our sensors are the best" could be true, really. For portraits you may use the Nikon instead--- and hell, a real pro doesn't care about brands. If you shoot portraits you can get far better results with a Pentax 645, a cam not much more expensive than a D4s.


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EOS Bodies / Re: Patent: Variable Diffusion Focusing Screen
« on: October 16, 2014, 09:15:13 AM »
I use the Canon Ee-S and it's quite good to focus, even on f1.2. The downside is to use lenses with f2.8 or faster, but that's doable in most cases. Is the 5D Mark3 able to change the Focus Screens anyway? I don't think so...   ;(

12
Canon General / Re: seeimpossible.usa.canon.com?
« on: October 07, 2014, 01:35:29 PM »
Quote from: weixing
I don't think Canon will come out a camera that will take a long time to save a few images to the average speed card... high speed, high capacity card is still very expensive.

I dont think that's a real problem. 8GB of Ram is cheap as nuts and even internal flash mem with 16 or GB is nothing to be concerned about. Those amounts should hold dozens of pictures for a while and a recent UDMA Card can write them away... so after a few seconds of fire the content should be written.

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Canon General / Re: seeimpossible.usa.canon.com?
« on: October 06, 2014, 04:29:26 AM »
I smell a fullframe foveon/CMOS Hybrid MegaPixel 1Dx S, paired with a Kitlens of 14-105L f1.4...  and at the same time they'll pronounce a new 50mm L1.0.

In your face Sony! ;)


14
EOS Bodies / Re: Canon Says Higher Resolution Sensors Are Coming Soon
« on: September 25, 2014, 04:43:45 AM »
<mimimi>
Dear Canon.

I don't know how people created pictures in the last few years... how did they manage to take even one serious shot on a 5D with those 11.3 Stops of dynamic range? All my photography can start in maybe 4 years, when Canon will be able to at least ship sensors with 14 or better 16 stops.

On the landscapes, everytime I go outside there is a huge gap between sky and the shadows... I can't really capture the beauty of my scene to the fullest. My HDR Button is broken and I can't use the AEB to compensate even a little bit. If I just could have a Nikon, then every picture would be awesome, I could post my food on Instagramm and there will be no banding in the shadow of my sandwich. Please Canon, PLEASE, give me more Range. My portfolio just depends on the last stop of DR. And give it to me @110 MPixel, because if I want to print it for my mum I will do it on A3.

I have nothing shown to mankind yet, and this is your fault!! And by the way, your primes have aberations. I don't like aberations. I once hat aberations in china, they tasted good. But I can't buy them here.

</mimimi>


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they just can't match the Japanese efficiency when it comes to fuel injectors

http://www.youtube.com/watch?feature=player_detailpage&v=1EBfxjSFAxQ#t=68

Funny complainments from UK... I guess they're still angry 'bout germany. No hard feelings ;)

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