More Specifications & Images of EOS 5D Mark IV

[Loswr]

Anyway, just my unsolicited 2 cents. Good to be here. Looking forward to seeing what Canon ultimately delivers.

Worth far more, great points. Welcome!

 

[ahsanford]

What's the "dual pixel" note on the spec list?

ever possible to no post-processing of the adjustment dual pixel RAW file (bad translation)
“The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm.”

Is that like Dual ISO in Magic Lantern??

We don't know, but it might be similar to that, yes.

- A

 

[justsomedude]

What's the "dual pixel" note on the spec list?

ever possible to no post-processing of the adjustment dual pixel RAW file (bad translation)
“The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm.”

Is that like Dual ISO in Magic Lantern??

We don't know, but it might be similar to that, yes.

- A

gimmeh!

 

[naylor83]

let's tip our cap to the D810 sensor in that it simultaneously topped out (or nearly topped out) in resolution / DR / high ISO. That's a freakishly good sensor.

OMG. When will ppl understand that DR, resolution and SNR (low noise) are not mutually exclusive? They all work together!

 

[KeithBreazeal]

If the new button next to the "Q" is for audio annotation, I would be all over the upgrade.
There are times when note taking just isn't possible.

Dual ISO for stills- Take my money now!

Video- I could care less.

 

[ahsanford]

If the new button next to the "Q" is for audio annotation, I would be all over the upgrade.
There are times when note taking just isn't possible.

Dual ISO for stills- Take my money now!

Video- I could care less.

Can any veteran ML users here speak to how effective dual ISO is for DR?

Is it more of a parlour trick you can still see if you pixel peep? (Do you need to downsample shots to mask that?)

I recognize the implementation in ML was a bit of a hack method, but it might set a floor for how effective it might be in the 5D4. One might imagine Canon's best could do much better...

- A

 

[Loswr]

If the new button next to the "Q" is for audio annotation, I would be all over the upgrade.
There are times when note taking just isn't possible.

If that were true, it would have a little microphone icon on it...like the button for a voice memo on the 1-series bodies.

 

[midluk]

What's the "dual pixel" note on the spec list?

ever possible to no post-processing of the adjustment dual pixel RAW file (bad translation)
“The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm.”

Is that like Dual ISO in Magic Lantern??

We don't know, but it might be similar to that, yes.

If the "dual pixels" are the same as in "dual pixel AF", the quote in the original post sounds like BS.

It is most likely is not "like Dual ISO in Magic Lantern".
You have one half of bokeh balls in one of the dual pixels and the other half of bokeh balls in the other one. So bokeh will be absolutely awful if the saturation points of the pixel halfes are different.

You might draw depth information from the dual pixel information, but dynamic range will very likely not profit from it more than it would from just storing the sum of both pixel halfes with one additional bit.

 

[ahsanford]

If the new button next to the "Q" is for audio annotation, I would be all over the upgrade.
There are times when note taking just isn't possible.

If that were true, it would have a little microphone icon on it...like the button for a voice memo on the 1-series bodies.

I think that goes in the bucket of 'amazingly useful feature for a very small number of people, so Canon trapped it in the 1D platform only'.

Also in that bucket: spot metering linked to the selected AF point. #brokenrecordemoji

- A

 

[tr573]

If the new button next to the "Q" is for audio annotation, I would be all over the upgrade.
There are times when note taking just isn't possible.

Dual ISO for stills- Take my money now!

Video- I could care less.

It's an AF area selector. The 7D2 battery grip has the same thing on it (as opposed to the little lever around the joystick on the actual body)

http://media.the-digital-picture.com/Images/Other/Canon-EOS-7D-Mark-II/Canon-BG-E16-Back.jpg

 

[ahsanford]

If the "dual pixels" are the same as in "dual pixel AF", the quote in the original post sounds like BS.

It is most likely is not "like Dual ISO in Magic Lantern".
You have one half of bokeh balls in one of the dual pixels and the other half of bokeh balls in the other one. So bokeh will be absolutely awful if the saturation points of the pixel halfes are different.

You might draw depth information from the dual pixel information, but dynamic range will very likely not profit from it more than it would from just storing the sum of both pixel halfes with one additional bit.

It looks like it's about DR and possibly some sharpening upside. Updated info from the original spec list posting:

"The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm"

- A

 

[Loswr]

If the "dual pixels" are the same as in "dual pixel AF", the quote in the original post sounds like BS.

It is most likely is not "like Dual ISO in Magic Lantern".
You have one half of bokeh balls in one of the dual pixels and the other half of bokeh balls in the other one. So bokeh will be absolutely awful if the saturation points of the pixel halfes are different.

You might draw depth information from the dual pixel information, but dynamic range will very likely not profit from it more than it would from just storing the sum of both pixel halfes with one additional bit.

It looks like it's about DR and possibly some sharpening upside. Updated info from the original spec list posting:

"The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm"

Updated with a blurb from someone who does not seem to understand dual pixel architecture.

 

[midluk]

If the "dual pixels" are the same as in "dual pixel AF", the quote in the original post sounds like BS.

It looks like it's about DR and possibly some sharpening upside. Updated info from the original spec list posting:

"The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm"

This is exactly what I was talking about as "quote in the original post sounds like BS". It is just a random quote from a random guy that does not have any more clue than anybody else in here.

 

[Mark D5 TEAM II]

^^^ That Twitter explanation has already been debunked, Craig should update the post and remove that quote from that Twitter user. Dual Pixel doesn't work that way. Both halves of the pixel are under the same color filter.

 

[ahsanford]

If the "dual pixels" are the same as in "dual pixel AF", the quote in the original post sounds like BS.

It looks like it's about DR and possibly some sharpening upside. Updated info from the original spec list posting:

"The way Dual Pixel works, 30MP DP sensor means a 60MP dual pixel raw file with a new RRGGGGBB pattern (vs RGGB), so potentially better dynamic range, and maybe an improved debayering algorithm"

This is exactly what I was talking about as "quote in the original post sounds like BS". It is just a random quote from a random guy that does not have any more clue than anybody else in here.

Good gravy, my apologies! I thought this was translated and vetted by CR guy. My bad.

- A

 

[neonlight]

Don't know if someone mentioned this - not read all 240 comments - but when I last worked on image sensors I came across a dual pixel device which had a small photodiode and a large photodiode making up one element. The small one would be used for bright lights and the large one for low lights so combining the two will give a dynamic range improvement over a single diode pixel. I guess both pixels are available in raw - hence RRGGGGBB - but this would really be a small RGGB and a large RGGB. For 30Mp the camera probably works out the best one to use.

 

[privatebydesign]

Also in that bucket: spot metering linked to the selected AF point. #brokenrecordemoji

- A

I think Canon are doing you a favour, when even those people who demand it fundamentally don't realize what using it entails you would miss more shots than you would ever get. To think you could just point it at your wife in changing lighting and get the right exposure without using EC for each shot is laughable.

It is the most predictable and precise metering mode but not effective when used with an auto exposure mode unless you are a wiz on the compensation dial. It's real strength is tonal control where deliberate choices are made about specific tonality in a scene and often well outside the +/-3 stops of compensation auto modes give us.

 

[tr573]

Don't know if someone mentioned this - not read all 240 comments - but when I last worked on image sensors I came across a dual pixel device which had a small photodiode and a large photodiode making up one element. The small one would be used for bright lights and the large one for low lights so combining the two will give a dynamic range improvement over a single diode pixel. I guess both pixels are available in raw - hence RRGGGGBB - but this would really be a small RGGB and a large RGGB. For 30Mp the camera probably works out the best one to use.

Wasn't this essentially what Fuji used to do in their F-Mount SLRs?

 

[mmeerdam]

Don't know if someone mentioned this - not read all 240 comments - but when I last worked on image sensors I came across a dual pixel device which had a small photodiode and a large photodiode making up one element. The small one would be used for bright lights and the large one for low lights so combining the two will give a dynamic range improvement over a single diode pixel. I guess both pixels are available in raw - hence RRGGGGBB - but this would really be a small RGGB and a large RGGB. For 30Mp the camera probably works out the best one to use.

Realistically this would provide about one tot two stops extra DR to work with probably. Which means about 15 stops. Probably high iso will benefit some more. Probably only meant to be available in post. Jpegs could look really artificial and probably would be too complex to calculate at 7 fps. It's probably quite nice to have 2 intensity values per pixel to average and thus cancel out noise or selectively bring back detail. Maybe highlight roll off can be softer by combining the 2 subpixel values. It would make for a very filmic look.

 

[Talley]

hmm... during research I've concluded and this is my guess.... was KEPT the CF slot on the 5D4 to prevent magic lantern from unlocking 1dx2 video capabilities. By not using CFAST then ML cannot hack 4k 60fps because the media can't write.... which means the V4 UHS-II spec that is rated 318MB/s could be the faster card to use... BUT I doubt they put the fastest SD slot in there. This is Canons way to "Protecting" the 1Dx2 features... by keeping slower just good enough I/O interface on the 5D4. Think about that.