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Messages - Krob78

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346
Animal Kingdom / Re: Show your Bird Portraits
« on: October 30, 2013, 08:46:35 PM »
Yet another heron picture :)
Nice Silhouette Don! :)

347
EOS Bodies - For Stills / Re: EOS 5D Mark III Firmware 1.2.3 Available
« on: October 30, 2013, 08:44:31 PM »
Still don't know if its worth upgrading from day one firmware to this.  Everyone started talking about prisms and 1dx nonsense. 

Worth it or not?
I'd say it's worth it Kurt.  AF at f/8 is a great point, other little bug fixes are welcomed too.  I had no issues with the firmware...

348
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 30, 2013, 06:16:39 PM »
Sorry all that I replied with facts regarding  improving the  Canon  APS sensor sensitivity
No problem here my friend!  I just wanted to lighten up the tone a bit and keep it real! 

Seriously, there is a lot of interest for this body and it's a great thread!  Thanks for your thoughts and input!  Some of us are learning new, fun facts!  ;D

349
EOS Bodies / Re: EOS 7D Mark II Spec List Surfaces [CR1]
« on: October 30, 2013, 03:28:30 PM »
Okay, since I've been soundly mocked for suggesting a 1-2 stop improvement in ISO performance for a 7DII, I'm a bit stunned.

Is it the consensus of the techies on this forum that is truly impossible for any manufacturer to produce an APS-C sensor in which the noise level at 1,200 ISO is comparable to 400 ISO (a 1.5 stop improvement)? Or, for that matter, that ISO 800 could look as good as ISO 400 (a one stop improvement)?

That doesn't seem like an unrealistic expectation, but apparently it is.

If that is truly the case, then I have to wonder what is the point of any future upgrades? Yes, I understand there is more to a camera than the sensor and even with sensors there is the whole quagmire of dynamic range that I'd rather not get into. But, given some of the real world and highly impressive images I've seen on this forum and elsewhere shot with the 5DIII at, what for me as a former film shooter, are remarkable ISOs (3200, 6400 etc.) it just doesn't seem unreasonable to expect the 7DII to boost its ISO performance by even one stop.

If we are truly at the physical limits of sensor performance and can never get an additional fstop out of any future sensor, what does that mean for the industry? And, as a side note, given that Canon is poised to jump into the surveillance market in a much bigger way, is this a fool's errand if we have reached the limits of low-light performance?


Quantum efficiency (QE) is the fraction of photon flux that contributes to the photocurrent  in  a pixel. Increasing QE improves sensor signal to noise ratio and dynamic range.
There are sensors from Sony who has a QE  of 75% and a pixel size of 1,85 micron, Canon best sensor regarding QE is in S100  compakt camera and QE 52%   ,  6D has the best QE among  Canon SLR  with 50%  compared with  Nikon D800 and 56% QE
The read noise from  Canon are 10 times higher  (6D)  up to 14 times higher (1dx) than in Nikon D800 .
Improving an APS sensor with real 1,5-2 stops in terms of signal /noise is a big challenge and can not be done with Canon's existing sensor technology regarding APS and 24x36mm sensors
Quote
Quantum efficiency (QE) is the fraction of photon flux that contributes to the photocurrent  in  a pixel. Increasing QE improves sensor signal to noise ratio and dynamic range.
There are sensors from Sony who has a QE  of 75% and a pixel size of 1,85 micron, Canon best sensor regarding QE is in S100  compakt camera and QE 52%   ,  6D has the best QE among  Canon SLR  with 50%  compared with  Nikon D800 and 56% QE
The read noise from  Canon are 10 times higher  (6D)  up to 14 times higher (1dx) than in Nikon D800 .
Improving an APS sensor with real 1,5-2 stops in terms of signal /noise is a big challenge and can not be done with Canon's existing sensor technology regarding APS and 24x36mm sensors
Whew, that's a relief!  So... it's still safe to go out and take photos, no?  ???

350
So my 5D MkIII has been revealing stuck/dead/hot pixels in my images... Thought I could re-map it myself and called CPS to advise me on the best method.

Interestingly and unexpectedly, they told me to send it in for regular maintenance and that they would fix it!  They said that I can't fix it myself. 

I mentioned that I had thought I re-mapped a Rebel sometime ago for a friend and he said that I likely did but it cannot be done by me on the 5D3? 

Anyway, into CPS it goes for CMS... Hopefully that's free since I'm still under warranty!

Just wondering if anyone else has heard that we can't fix the pixel issue on a 5D too?  Did you have to send it in as well?

Thanks!
Ken

351
EOS Bodies - For Stills / Re: EOS 5D Mark III Firmware 1.2.3 Available
« on: October 30, 2013, 01:42:27 PM »
I assume you mean HDR ... You can set it to save all images. When I do HDR I get the processed HDR in camera plus all of the RAW images.

Yeah, in-camera HDR.  Another feature found on the 5DIII (and other models, including my lowly PowerShot S100), but not found on the 1D X.   :P
That wretched Canon... How is it, not to include the 1Dx in these feature sets?  I've noticed that they left your hallowed 1Dx without a built in flash too, as even the Rebel series have them... Not very sporting of them at all... I feel your pain, no built in flash or articulating LCD screen on the lowly 5D MkIII either! 

Albeit, it's certainly easy to feel slighted by all these features that you're going without on your 1Dx, keep your chin up, it's possible they'll give it a hardware and another firmware update very soon... I'm hoping for your sake, anyway!   ;)

352
Landscape / Re: Sunset landscape
« on: October 30, 2013, 01:25:19 PM »
Red Rock Canyon
EOS 7D, 18-135mm

Very compelling, Ken!  8)
Thank you Sir!  Unfortunately, I had no filters with me on that trip either!  Ended up there quite by accident but glad I got to go!  Exposed for the sky and brought out the shadows and the exposure in the rock in post with LR...

353
Landscape / Re: Sunset landscape
« on: October 30, 2013, 01:09:17 PM »
Red Rock Canyon
EOS 7D, 18-135mm

354
Landscape / Re: Post Your Best Landscapes
« on: October 30, 2013, 01:06:26 PM »
Red Rock Canyon

355
Landscape / Re: Post Your Best Landscapes
« on: October 30, 2013, 01:04:55 PM »
Grand Canyon

356
Black & White / Re: Black & White
« on: October 30, 2013, 12:23:53 PM »
Grand Canyon

357
Black & White / Re: Black & White
« on: October 30, 2013, 12:21:04 PM »

358
1D X Sample Images / Re: Any Thing shot with a 1Dx
« on: October 30, 2013, 11:48:09 AM »
Some pretty awesome photos in this forum, and some pretty bad ones as well. As a recent 1DX owner I felt for a longtime my photos where not worthy enough to post in this thread. Until I made this photo of a White-tailed Eagle (Haliaeetus albicilla) 4 days ago. Hope you guys like it, I know I do :)

1DX with 500mm f/4 @ 1/2000 sec., f/5.6, ISO 2000

Awesome!
WOW X 1000!!  Awesome ROEL!  This is one of the best ever!  Really Awesome!  I'm jealous!

359
1D X Sample Images / Re: Any Thing shot with a 1Dx
« on: October 30, 2013, 11:42:29 AM »
Lynx in a cold breeze and low autumn sun. There are only about 350 animals in around 60 family groups left of this beautiful animal here in Norway. One feels privileged to have seen it.
1DX, 200-400 f4L 1.4x at 560mm f5.6 1/2000s, ISO400
Stunning and beautifully transfixing image!  I feel privileged just to have seen it here!  Thanks so much, great image Eldar!

360
Landscape / Re: Beautiful sunsets
« on: October 30, 2013, 11:40:00 AM »

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