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Messages - pedro

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16
EOS Bodies / Re: EOS 6D Mark II to Move Upmarket? [CR1]
« on: December 25, 2014, 05:55:45 AM »
Will the 6D move up to make room for the 5Dish high MP beast and serve as a revamped high sensitivity cheapo 5D?

17
EOS Bodies / Re: Canon Confirms Development of High Megapixel Camera
« on: December 25, 2014, 05:54:18 AM »
well, it might be a very intresting phase from 2015 onward into 2016. Hope they do two 5D lines. High ISO allrounder and high pixel count studio beast...I'd be in for anything with better IQ in high ISO. Merry Christmas then...;-)

18
EOS Bodies - For Stills / Re: High ISO heaven!
« on: December 23, 2014, 07:37:17 AM »
That's a gem of a photograph. So you're saying, you were browsing the jungle...alone?

Not this time, it was on a safari, but i have in the past and come across leopards and a tiger in the dark once...  Wild elephants on the roads are not uncommon, leopards and tigers too near the parks (or Mumbai where they roam the streets from time to time).



Okay. Thank you for the look behind the scene, then. That sounds very adventureous...;-)

19
Lenses / Re: Which Canon Full Frame Camera is For You?
« on: December 23, 2014, 05:21:59 AM »
The 5D3 is more camera than I ever need, but it really rocks. What I'd wish for a next version is a decent increase in high ISO IQ above ISO 12.8 k and 22 MP or not more than 24 MP.

20
EOS Bodies - For Stills / Re: High ISO heaven!
« on: December 23, 2014, 05:15:34 AM »
That's a gem of a photograph. So you're saying, you were browsing the jungle...alone?

21
EOS Bodies / Re: Noise - maybe it's good?
« on: December 22, 2014, 02:33:50 PM »
to me the samples look fine.

22
EOS Bodies / Re: 2015 wishlist
« on: December 22, 2014, 02:30:38 PM »
I could think of a 22 MP 5DIV with 3200ish ISO 6400 and 12800ish ISO 25600, this would make some very usable ISO 51200. But I also know, this might remain wishful thinking.

23
EOS Bodies / Re: More 7DII focus problems
« on: December 22, 2014, 02:26:20 PM »
good humor found here. made my day. I'll go for that pelican... 8)

24
EOS Bodies / Re: Poll: Most wanted new features for 5D Mark IV
« on: December 22, 2014, 02:20:47 PM »
FPS, focus system improvements in line with 7D2, increased buffer performance, better high ISO performance, AF during video, and faster flash sync would be nice.  All of these things are the incremental changes that one would expect with an upgrade that can leverage expected technological improvements.

One thing that I do NOT want in a 5D4 is higher pixel count.  22 megapixels is plenty.  I don't want to deal with RAW files bigger than 30 MB.  Instead, I'd rather see Canon introduce a sibling to the 5D3 and 1Dx with the high megapixel sensor.  Keep the 5D and 1D series in their current pixel count range to keep their low light and high speed buffer performance benefits.
+ tenthousand!

- SD card slot - not just faster, as fast as CF
- Better ISO performance in 4-10k range (I don't care after that, so far)
- Wi-fi implented in a way that'd enable me to sync camera to my working drive
- Focus peaking/trap focus would be nice
Better ISO performance in 40-10k range will affect the other ISO levels as well. Really hope Canon keep with 22 MP so, at least 1/2 stop better in high ISO might be possible. I am no expert in tech...

25
EOS Bodies / Re: Poll: Most wanted new features for 5D Mark IV
« on: December 21, 2014, 07:31:21 AM »
I would like them to keep the MP count either as it is or not higher than 24 MP, as the 5Ds are considered allrounders. Therefore I definitely would like to see a slightly enhanced IQ above ISO 25k. 1/2 or  3/4 stop better than my 5D3. Is that feasable? Even at 24 MP? Hope so. ;-)

Or will they trump up the 5D and make the 6DII the new lower MP cam?

26
EOS Bodies / Re: Patent: Sensor Technology
« on: November 29, 2014, 11:30:09 AM »
oh yes I can imagine ;-) maybe there is anybody out there who dominates japanese, or who knows how to transform these phrases into something like english...;-) cheers, Pedro

27
EOS Bodies / Re: Patent: Sensor Technology
« on: November 29, 2014, 11:06:59 AM »
what I could get out of it from the link provided filtering the japanese signs through babylon translater:
A patent to extend dynamic range in the pixel that Canon transmissivity is different[a semiconductor / electronics technology]
Canon HDR Explanation / the self-interpretation of the patent document Patent public number 2014-175,553 A Pub. Date2014.9.22 An application date2013.3.11 A patent of Canon A light decrement film by the poly-silicon arranges it on photoelectric conversion department The light decrement film is different in transmissivity of the light depending on the thickness, and the thickness is different by a pixel The small pixel of the transmissivity has a small opening area A color filter of RGB either The transmissivity is R<G<B A patent of Canon That sensitivity is different by a pixel isn't the thing that various makers are rare of patent application. About a method to let sensitivity be different, various patent application will be considered to be it to evade a patent. For example, a certain maker is applying for the patent of the different ND filter of the transmissivity. Then I seem to have established the light decrement film by the poly-silicon between a filter and photodiode when it was said what the patent application of Canon was different in. Because many makers are interested in technology to let the sensitivity of the pixel be different, manufacture is expected.

29
The technology of image sensors is ripe, and we should expect small improvements. Something like 1/3 stop better seems quite realistic.
If Canon does not change their overall architecture, I agree...1/3rd stop at best. The A7s is an indication of what's possible, and it's more than two stops better than the 1D X at ISO 51200.  If Canon improves their overall architecture, I really hope we see at least a 2-stop improvement across the board, low and high ISO.
You say 2 whole stops of noise at high ISO? :o
Are you sure you were not talking about 2 stops of DR? ???


DR, lower noise. Same thing. We're primarily talking photon shot noise here. Assuming you have a perfect system...one that does not introduce any read noise, then more dynamic range or lower photon shot noise, there is no difference. It's the same thing, because dynamic range is the ratio between the maximum signal power and noise level. Read noise is just additive with photon shot noise, so it's the same thing in the end...lower noise, higher DR...same thing.


Keep in mind...noise is a random, undesired deviation from the proper, correct sample value. It's a range itself, +/- X, around the correct signal value. At higher signal power, that +/- X becomes less significant, so at higher ISO, increasing your maximum signal power becomes increasingly important. This has nothing to do with shadow pushing anymore...it has to do with overall signal quality. This is why pixel size becomes increasingly important at very high ISO settings, where as it is not really important at all at low ISO settings...at low ISO settings, there is (usually, assuming you expose properly) plenty of light, and it's read noise that becomes the most dominant source of noise. Bigger pixels gather more light, it's basically real-time averaging, like downsampling an image, only at the time the image is created.


At higher ISO settings, read noise drops to effectively imperceptible levels. Once your at ~3e- or lower, read noise is pretty trivial (so if you start out at 3e- at base ISO, like the D810, your doing really freaking good!) Photon shot noise completely dominates, and the weaker the signal, the more dominant noise will be. That is where the A7s pulls ahead of everything else right now for overall signal performance across all ISO settings. It has great low ISO DR (not the best, but excellent, at 12.9 stops), but it has the signal strength at high ISO to produce better images. It's got a maximum saturation (signal strength) of 323e- at ISO 51200, paired with a phenomenal read noise level of 0.7e-. In contrast, the 1D X has a max. sat. of 163e- at ISO 51200, paired with a still great, but still more DR-diminishing than the A7s, read noise level of 1.7e-. The A7s has twice the signal power and less than half the read noise. Ignoring the read noise entirely...you still have twice the signal strength, which in and of itself is a full stop improvement.


Also keep in mind, noise levels are additive. The 0.7e-/1.7e- RN levels are primarily additive with photon shot noise, and with the signal itself...so again, those read noise levels affect the whole signal, not just the shadows.


So, it doesn't matter what you call it, really. Lower noise, higher DR...same difference. It all means a better image in the end.

Thank you jrista for this detailled explanation! Will we ever come as close to such a great high ISO IQ as Sony demonstrates it, at the same or a similar price tag by Canon? I kinda doubt that, I guess they will ask another premium for that same thing... Sometimes I am pondering about purchasing a Sony A7s for the lowlight pics and keep with the 5D3 for the rest...

30
EOS Bodies / Re: Modular DSLR Coming from Canon? [CR2]
« on: October 29, 2014, 02:25:04 PM »
Can't really speak too much about modular components, but I'd love to see a video-focused cinema DSLR camera with something in the ballpark of:

• $3k - $4k price range
• Full frame sensor ~12mp
• DPAF
• Tilt touch screen
• EVF
• 1080p 60fps (4K would be nice, but probably not going to happen)
• MPEG2/AVCHD codec options
• Clean 4:2:2 out (again, 10 bit would be nice but probably not happening at sub $4k)
• No time recording limit
• Focus peaking/zebras
• 19 point all cross type auto focus
• ISO range 100-51,200 (expandable to 50-204,800)
• Smooth ISO ramping auto-exposure like the Nikon D810
• Mic input with dedicated gain knob
• Headphone output
• Built-in WiFi


In my dreams... I know :P

What would you guys like to see in a DSLR cinema camera that would win you over more than the 1Dc?

If this was for real, I'd compose my 4 fps, 12 MP high ISO monster...;-) at 4K...wow...

On another note: is there any relation to this recent thread?
   
If Canon made a " truly ultimate" DSLR body for, say, $10k would you buy it?  New
Started by LovePhotography « 1 2 3 ... 5 »

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