January 26, 2015, 06:03:04 AM

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Messages - 9VIII

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1
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 05:36:41 PM »
Most types of digital Anti-Aliasing (Multi-Sampling or Super-Sampling) only appily the effect where it's needed, and can even bring out detail in a digitally rendered image that would not have been there otherwise. It maintains sharpness while fixing certain problems.
The AA filter on a camera would be comparable to a post processing AA filter, like FXAA, which simply blends every pixel on the screen with its neighbour, which eliminates both aliasing and crisp edges.

Sort of but multi-sampling covers the entire scene so it does it's thing everywhere, but the effects are obviously more noticeable on some parts of some images than on others (unless they did some targeting to located areas of harshest transition and only multi-sample those regions).

That's right.
The reason multi-sampling is so much more efficient than super-sampling is that it's applied selectively.
That also means it's less effective in some applications, but the cost to benefit ratio is very attractive.

2
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 05:26:39 PM »
To all the sports, journalism and event photographers out there: No, this camera is not for you. You can safely ignore it, while all the landscape, macro, and "less trigger happy" photographers will gobble the thing up and relish every moment manipulating the huge image files.

? Never stop to wonder how people define other photographer's needs.

Indeed.

I just hope it's not just the 7D2 sensor scaled to FF as it sounds like.

I'd rather have the same MP as the 5D3 and a lot more DR and even more fps and topq uality 4k video than some 7D2 scaled up 50MP sensor and low fps and poor video and poor DR.

I'm still confused about the constant stream of negativity toward new camera options that don't fit an individual's style.

3
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 03:03:37 AM »
To all the sports, journalism and event photographers out there: No, this camera is not for you. You can safely ignore it, while all the landscape, macro, and "less trigger happy" photographers will gobble the thing up and relish every moment manipulating the huge image files.

4
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 02:58:27 PM »
Explanation please? What is a low pass filter in this context? What is it for and if it's necessary, why build a camera without one? Is it the same as an anti-aliasing filter (another term I don't understand...)
Yes, the low-pass filter is the same as AA filter. These filters aims to avoid moiré and aliasing, which occur because of the repetitive format of pixels (all the same size and shape).

In ultra-high resolution cameras with low quality lenses, the AA filter does not lack. But put a razor sharp lens, as Sigma 50mm Art, moiré and aliasing will be visible. I'd rather have an AA filter and not worry about jagged edges and false colors in my images.



The image of the pool balls is not a representation of an AA filter on a camera.

That's a digitally rendered image with anti-aliasing digitally applied, very different from a screen that manipulates light before it gets to a camera sensor.
Most types of digital Anti-Aliasing (Multi-Sampling or Super-Sampling) only appily the effect where it's needed, and can even bring out detail in a digitally rendered image that would not have been there otherwise. It maintains sharpness while fixing certain problems.
The AA filter on a camera would be comparable to a post processing AA filter, like FXAA, which simply blends every pixel on the screen with its neighbour, which eliminates both aliasing and crisp edges.
I would never recommend using a post process AA filter with a 3D rendered image.
The AA filter on your camera is a necessary evil because without it certain patterns will trick the debayering algorithm into producing patterns that don't exist (AKA Moire, the first example).

5
EOS Bodies / Re: Canon EOS Rebel 750D Spec List [CR1]
« on: January 21, 2015, 11:08:02 PM »
The idea that one of these bodies could be the SL2 is pretty exciting.
Fingers crossed that is the case.

6
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 21, 2015, 10:58:24 PM »
I'm guessing here, but I think when he claims that focus has no bearing on image quality he is referring to the parameters that are not under user control. User can not remove noise or add DR to a sensor, but a user can change the focus. Just a guess.

The user CAN remove noise (lower ISO, ETTR, processing, stacking) and add DR (lower ISO, ETTR, stacking, HDR).

I guess all of that applies when the user is taking a picture of a galloping unicorn on a rainbow. Pitty that most of the real world situation are not as easily corrected.

I really, really hope you're not being serious.

7
If the Pancake is an option, the Pancake is always the correct choice.

8
I still think it's funny when people debate the definition of "good" photography.
It's either wholly and entirely subjective or it's not.

9
Third Party Manufacturers / Re: Samyang Launches 135mm f/2 Lens
« on: January 12, 2015, 10:07:36 PM »
I just realized this lens has a really good maximum magnification. That pretty much seals the deal for me, I will own this lens
Shoot. I just remembered that close focus is not a good indicator of maximum magnification because focus breathing can ruin everything.
I guess I still have to wait and see.

10
Third Party Manufacturers / Re: Samyang Launches 135mm f/2 Lens
« on: January 12, 2015, 01:35:42 PM »
Yippee!

I just gave away my 85f1.4 so the timing is just right.

And focusing an 85f1.4 is no different than 135f2, but I appreciate the longer focal length.
Hopefully this lens is optically superior to the 85mm, which was already decent.

11
EOS Bodies / Re: NEW CAMERA - EOS 80D?
« on: January 09, 2015, 09:20:58 PM »

You won't see a replacement for the 70D this year. This is the year of the full frame cameras...

Funny you should mention that, I'm fairly certain the 80D will be full frame.

But now does seem a little soon for the introduction of the first budget full frame body.
The T6i fits best.

12
Too bad they couldn't make a good, inexpensive 400mm lens.
I might actually get a Nikon if they did...
But who am I kidding, any inexpensive 400mm lens from Nikon would have rainbows around every high contrast border and resolve as much detail as a cropped image off a 70-200 zoom lens from Canon.

13
EOS Bodies / Re: Wait for it ... Revolutionary or Evolutionary in 2015
« on: January 04, 2015, 07:33:19 PM »
I'm going to have to agree with most of the replies thus far, someone would really have to pull a rabbit out of their hat in order to do something revolutionary with the camera now.
When you read about the advancement of camera technology over the years it's kind of amazing how much goes into even the cheapest SLR body right now (metering, AF, sensor tech etc..)

That Lytro thing was interesting, we're all waiting for multi-layer sensors to hit their stride, and Samsung's idea of an algorithm that actuates the shutter for you at just the right moment could have potential (if they could get the shutter to fire automatically when the subject is centered and in focus). Similarly, high-resolution video bursts could be nice.

But right now all the biggest improvements are still being iterated on and need a lot of work.

14
PowerShot / Re: New PowerShot(s) for CES Next Week [CR1]
« on: January 02, 2015, 06:31:25 PM »
That's kind of weak for a superzoom, and not much on the wide end either, but if it has excellent IQ (especially at f2) then I guess it still has potential.


15
Third Party Manufacturers / Re: Is Leica really worth it?
« on: January 02, 2015, 09:46:42 AM »
http://en.wikipedia.org/wiki/Veblen_good

If you want to own something because it's too expensive for any of your friends to afford one, then yes it's worth it.

 

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