50mp Cameras Coming in March [CR1]

[surapon]

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.

Thousand Thanks, Sir, Dear Teacher Mr. ajfotofilmagem .
I have learn some thing new and great knowledge from you to day , about Low-Pass Filter.
Have a great Weekend, Sir.
Surapon

 

[DSLR]

So I guess my question would be why would there be two versions what are the advantages of each I confuse easily Thank you

If the objects in focus in the image NOT have straight lines, and has NO repetitive geometric shapes, the AA filter is not required.

A camera with no AA filter, using a high sharp lens produces images that can be printed in very large sizes while maintaining sharpness. But objects like fabrics, screens, grids, and other highly subject to moiré can ruin a photo without AA filter.

way overstated in ref to "ruin a photo". Nikon has been offering this for years and haven't heard any complaints.

 

[ScottyP]

How hard can it possibly be to use a non -Bayer pixel pattern like Fuji does? My understanding is Fuji just made the pixel pattern less simple than the little repeating 4-pixel blocks in a Bayer pattern that give us this problem with screen doors/fabric/etc., and this makes the low pass filter unnecessary.

It seems fairly straightforward and not subject to any patent issues vs. Fuji. How could anyone patent "any pattern in the world other than Bayer"?

 

[drjlo]

We don't know anything about the new sensor yet other than it's rumored to be 50mp.

Is it just me who thinks 50 mp is not a good idea unless the sensor size is substantially larger than even full frame?

 

[nvsravank]

If it is the same as the quality of the 7D mark II then I will pass on it.

For my purposes I need clean pictures and the quality I want I get up to ISO 1600 on 5D mark III. The 7D mark II comes upto ISO 800 at that quality. I need ISO 1600 regularly at the dances I shoot for the spot lighted sequences. I am going to rent the 7d mark II this year to test it myself before making a decision.

Even if it is good enough for me, I think I would prefer two cameras with different lenses so that I don't have to do the switching dance as much. I don't expect the same AF system on this 50mp behemoth.

Lots of choices coming for canon shooters. Maybe that will put an end to the switchers!

 

[mrsfotografie]

If it is the same as the quality of the 7D mark II then I will pass on it.

For my purposes I need clean pictures and the quality I want I get up to ISO 1600 on 5D mark III. The 7D mark II comes upto ISO 800 at that quality. I need ISO 1600 regularly at the dances I shoot for the spot lighted sequences. I am going to rent the 7d mark II this year to test it myself before making a decision.

Even if it is good enough for me, I think I would prefer two cameras with different lenses so that I don't have to do the switching dance as much. I don't expect the same AF system on this 50mp behemoth.

Lots of choices coming for canon shooters. Maybe that will put an end to the switchers!

It doesn't sound like you need 50mp for your purposes either... :

 

[tron]

I prefer my 44Mpixels (two 5DMkIII cameras )

 

[Chaitanya]

If that camera does come, then it should have atleast USB 3.0 as it will be needed to transfer large files within decent amount of time.

 

[Perio]

I hope Canon doesn't mess up with the price...

 

[chauncey]

I gave up waiting and bought a 645z

I would have followed suit...but I do to much macro work and it my impression that you need a lot
of extension tubes. :-\

 

[Lee Jay]

Will this be the first time Canon comes with two versions? I so doubt this….

Fourth time - 20D/20Da, 60D/60Da, 6D/6Dn are the first three.

 

[Lee Jay]

So by the sounds of things, don’t expect anything high megapixel related at CP+ in Japan next month.

So, what will be at CP+?

 

[Mt Spokane Photography]

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...)

A low pass filter is often used as a anti-aliasing filter. Its the simplest.

A low pass filter allows lower light frequencies to go thru, but blocks higher ones. Kinda like a UV filter that blocks UV light.

The high frequencies cause Moiré in the final image which is difficult to eliminate. As pixel count increases, the need for a optical low pass filter is reduced.

A low pass filter can be done in the electronics or optically, but its typically done both optically and electronically. We are talking elimination of the optical low pass filter, not the electronic one.

http://en.wikipedia.org/wiki/Anti-aliasing_filter

http://en.wikipedia.org/wiki/Nyquist_frequency

Several years ago, Panasonic produced a video called Demystifying Digital Cinema Camera Specifications

It covers many common questions and is reasonably easy to understand.

There are seven parts, and its worth while to view them all. It gives you a appreciation for the compromises that go into designing digital cameras, and explains why no one system is the best at everything.

The link is to part one, its easy to find all seven parts.


https://www.youtube.com/watch?v=gqq8QKMmtYg

 

[privatebydesign]

Will this be the first time Canon comes with two versions? I so doubt this….

Fourth time - 20D/20Da, 60D/60Da, 6D/6Dn are the first three.

The two Da versions are relevant, the 6Dn isn't, that is like saying the 600-EX and 600-EX-RT are different, technically they are, but the exclusion of locally restricted radio transmissions isn't a big deal.

But you are missing the big ones, 1D-1Ds, 1D MkII-1Ds MkII, 1D MkIII-1Ds MkIII, 1DX-1DC, the last two might be very similar but have very different capabilities and do have different hardware and firmware.

Canon will make what they think they can sell, and leveraging the 5 series family will likely prove much more profitable than the 1 series. I still like the common sense of a 5D MkIV (MkIII but 'better'), a 5DS (high MP), and a 5DC (video orientated), to me that makes a whole lot of sense.

 

[siegsAR]

Will this be the first time Canon comes with two versions? I so doubt this….

Fourth time - 20D/20Da, 60D/60Da, 6D/6Dn are the first three.

Plus the 70D, the ones that has wifi, and the ones that don't - if that counts. ;D

 

[Maiaibing]

Is it just me who thinks 50 mp is not a good idea unless the sensor size is substantially larger than even full frame?

Yes. Still happy shooting 8 megapix? ;D

Seriously, Canon acknowledges that their users want and need a high megapix camera. Everyone else can just stay with one of the old models. No problem. I'll post samples here.

 

[Maiaibing]

If it is the same as the quality of the 7D mark II then I will pass on it.

So would I for sure.

Lots of choices coming for canon shooters. Maybe that will put an end to the switchers!

Not if the above is true.

However, I hope and expect Canon will take a leap now and show us that they can outdo Nikon.

 

[Bruce Photography]

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...)

AA filter = Low Pass filter is my understanding. I have the D800 with the filter, the D800E where the filter stack has been neutralized, and the D810 and the D7100 that have no AA filter. The cameras without the filter have all better resolution. In order to see that better resolution, a person needs to use a tripod and a cable release, probably live view and use either the 3 second delayed exposure or the MUP/electronic shutter of the D810. Of course a top notch lens is also required. My highest res photo was of a harbor shot from above using the Nikon 85mm 1.4 at F11. Even now I'm amazed at the 3 foot x 2 foot print it made and the detail it shows that I've never seen before in such a shot. For landscape work I would be buying a camera without the filter for sure. For landscape work, moiré does not seem to be a problem. Even with chain link fences taken at a distance I can resolve the chain but I see no moiré. Other type of photography may encounter the problem but I just haven't run into it. I keep my D800 around on the off chance that I run into it.

 

[Maiaibing]

We’ve been told a few times that this is coming in the first half of 2015, now we’re hearing the cameras will be announced in March.

This has to be one of the weakest rumours ever even for this site. No new info here. :'(

I'd say CR-1 on this one as much as I am hoping/expecting/guessing Canon's new high megapix camera will hit stores in April.

 

[9VIII]

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).