falconeyes

falconeyes

Lives in Germany Germany
Has a website at falklumo.blogspot.com
Joined on Apr 28, 2008

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Total: 330, showing: 41 – 60
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On Pentax launches K-S1 Sweets Collection article (231 comments in total)

This is another tough but not final exercise in Shaolin monk style patience -- to eventually become a true Pentaxian. Only few prevail ...

Direct link | Posted on Oct 22, 2014 at 22:30 UTC as 122nd comment | 1 reply
In reply to:

falconeyes: DPR could have done a much better job when reporting this.

Let me fill in the missing facts:

1. 0.005 lux is -9 EV (almost exactly). The scene is pitch black dark indeed.

2. However, to judge the sensor, an EV figure w/o aperture and exposure time is meaningless.

3. According to Sony, it is F1.4, 1/60s exposure. -9 EV then requires ISO 6,000,000 to expose correctly. I.e., the image shown is ISO 6m.

4. That's 3.9 stop beyond e.g., the A7s highest iso level of 410k. But the image quality shown by Sony for a tiny 400x300 pixel image is terrible. While the A7s is still ok at 410k.

Therefore, no conclusion that this chip would be more sensitive than other sensors can be drawn from matrerial provided. Just marketing non info.

And btw, at quantum efficiencies already as high as 65% and read noise as low as 0.4 e- (A7s) rest assured that no miracles are left in this field if you cannot break the laws of nature.

@HowaboutRAW. We stretch this topic to the max, but it may be an interesting discussion for you anyway. From what you have posted in this reply section so far, I think, I am developing a feeling about where you are coming from.

Therefore, in all sincerity, do not believe everything which you can find written, only because you see fit. Understanding from first principles is much more important. It may take a couple years to work through all math but believe me, it is worth it.

As for infinities (singularities) and imaginary functions, don't believe for a second there is anything wrong with that. If you use sources claiming so, get rid of them. They obviously try to confuse you. E.g., the proper math treating of the kind of singularities you can encounter from the uncertainty relation is called "Functional analysis" in general and "Schwartz space" in particular (both have Wkipedia articles). Studying both was part of my third year education in Mathematical Physics. Learn, not read.

Direct link | Posted on Oct 22, 2014 at 22:09 UTC
In reply to:

falconeyes: DPR could have done a much better job when reporting this.

Let me fill in the missing facts:

1. 0.005 lux is -9 EV (almost exactly). The scene is pitch black dark indeed.

2. However, to judge the sensor, an EV figure w/o aperture and exposure time is meaningless.

3. According to Sony, it is F1.4, 1/60s exposure. -9 EV then requires ISO 6,000,000 to expose correctly. I.e., the image shown is ISO 6m.

4. That's 3.9 stop beyond e.g., the A7s highest iso level of 410k. But the image quality shown by Sony for a tiny 400x300 pixel image is terrible. While the A7s is still ok at 410k.

Therefore, no conclusion that this chip would be more sensitive than other sensors can be drawn from matrerial provided. Just marketing non info.

And btw, at quantum efficiencies already as high as 65% and read noise as low as 0.4 e- (A7s) rest assured that no miracles are left in this field if you cannot break the laws of nature.

It isn't my job to teach physics here, but since you ask ... If you can show the Heisenberg principle being broken by any experiment you'll be awarded a Nobel prize, I am almost sure. Recent work showing that measurement perturbations can be kept small are not in contradiction, as the Heisenberg principle does not state anything about measurement perturbations. Assuming it does was a misconception while popularizing the principle to non physicists.

Having said this, only one thing remains which is pretty obvious.

Direct link | Posted on Oct 22, 2014 at 00:24 UTC
In reply to:

falconeyes: DPR could have done a much better job when reporting this.

Let me fill in the missing facts:

1. 0.005 lux is -9 EV (almost exactly). The scene is pitch black dark indeed.

2. However, to judge the sensor, an EV figure w/o aperture and exposure time is meaningless.

3. According to Sony, it is F1.4, 1/60s exposure. -9 EV then requires ISO 6,000,000 to expose correctly. I.e., the image shown is ISO 6m.

4. That's 3.9 stop beyond e.g., the A7s highest iso level of 410k. But the image quality shown by Sony for a tiny 400x300 pixel image is terrible. While the A7s is still ok at 410k.

Therefore, no conclusion that this chip would be more sensitive than other sensors can be drawn from matrerial provided. Just marketing non info.

And btw, at quantum efficiencies already as high as 65% and read noise as low as 0.4 e- (A7s) rest assured that no miracles are left in this field if you cannot break the laws of nature.

@HowaboutRAW. I am glad I never have to discuss random opinions like this when meeting with scientists. Scientists who are capable to understand the Heisenberg Principle from the ground up.

@TrojMacReady. That's correct. One would have to do a proper noise analysis and normalize wrt sensor surface. All I wanted to say was that the example provided doesn't mean much as it stands.

@bwana4swahili: Here is a A7s iso 410k image:
http://cdn.lowyat.net/wp-content/uploads/2014/04/30eb50f7-8ecb-4e2f-b8a8-46bfd22a9b83_zps0c4091e6.png
ok and even better after correcting the color profile for the magenta cast.

Direct link | Posted on Oct 21, 2014 at 15:33 UTC
In reply to:

alcaher: I dont know much about sensors but some people like thom hogan have written that mostly aps-c sensor (including sony) have reached its limits in terms of DR, Resolution and high ISO performance. If this is some kind of a new sensor technology, could we see more of this in next year's new aps-c cameras from Sony and nikon?

@dialstatic,

not true for laws of nature. It is possoble to find limits for their validity, but once established, have never been broken. I.e., you can't escape the fundamental nature of photons.

Direct link | Posted on Oct 21, 2014 at 14:20 UTC
In reply to:

Canon EOS 60D: This sensor was developed for "Automotive use" and not photography. Camera geeks/nerds stop complaining. You're barking at the wrong tree. LOL

It is a news story on digital PHOTOGRAPHY review, you seem to forget.

And the question if the sensitivity of sensors could improve significantly in the future is valid. And as I detail in my post below, this story provides no evidence it can.

Direct link | Posted on Oct 21, 2014 at 14:15 UTC
In reply to:

Jogger: Why is colour information so important in automotive applications? Wouldnt they just go monochrome and gain the efficiency of not having the colour filters.

color is a great discriminator in pattern recognition. Remember that some pattern matching algorithm must identify something for this to be useful, like road, obstacles on it, trees, signs etc. Much easier with color information available. Moreover, it almost never is as black as -9EV in a real night. Not even in a starry moonless night.

Direct link | Posted on Oct 21, 2014 at 13:27 UTC

DPR could have done a much better job when reporting this.

Let me fill in the missing facts:

1. 0.005 lux is -9 EV (almost exactly). The scene is pitch black dark indeed.

2. However, to judge the sensor, an EV figure w/o aperture and exposure time is meaningless.

3. According to Sony, it is F1.4, 1/60s exposure. -9 EV then requires ISO 6,000,000 to expose correctly. I.e., the image shown is ISO 6m.

4. That's 3.9 stop beyond e.g., the A7s highest iso level of 410k. But the image quality shown by Sony for a tiny 400x300 pixel image is terrible. While the A7s is still ok at 410k.

Therefore, no conclusion that this chip would be more sensitive than other sensors can be drawn from matrerial provided. Just marketing non info.

And btw, at quantum efficiencies already as high as 65% and read noise as low as 0.4 e- (A7s) rest assured that no miracles are left in this field if you cannot break the laws of nature.

Direct link | Posted on Oct 21, 2014 at 13:21 UTC as 21st comment | 32 replies
In reply to:

falconeyes: Still largely useless tool. Ok for noise and corner performance. Nothing else.
E.g., uses F5.6 70mm eq. for RX100m3 and F4 50mm eq. fir LX100. Can't be compared. E.g., F5.6 is F15.4 eq. and deep into softness by diffraction territory.

As I said, it is ok for noise and corner performance comparisons. And you seem to agree. I further agree it is useful for comparing JPG engines. Although this again is much profile dependent, esp. when it comes to color rendition.

Problem is most people use your studio comparison tool for doing sharpness comparisons which you seem to agree, isn't its primary reason to exist.

Direct link | Posted on Oct 15, 2014 at 12:44 UTC

Still largely useless tool. Ok for noise and corner performance. Nothing else.
E.g., uses F5.6 70mm eq. for RX100m3 and F4 50mm eq. fir LX100. Can't be compared. E.g., F5.6 is F15.4 eq. and deep into softness by diffraction territory.

Direct link | Posted on Oct 15, 2014 at 10:41 UTC as 44th comment | 5 replies
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

Joe Ogiba: "Director Featured in Canon Ad Says He Used Sony, Tells Canon to Get ‘Its Facts Right’"
http://petapixel.com/2014/10/10/director-featured-canon-ad-says-used-sony-tells-canon-get-facts-right/

It looks like Canon opened a can of worms with this ad campaign.

@Joe, thanks for bringing this up again. I did twice further down, search for my comments. The real director is Fede Alvarez.

Canon can't get away with stealing Fede's life for following reasons:
- Canon abused 3D model Fede offers for download.
- The fictional movie does look like Fede's Panic Attack.
- Canon hired an actor looking like Fede (look close to see isn't him)
- Canon imprints "screen images simulated" which makes no sense with a fiction, pretenting its documentary
- Canon does NOT show a disclaimer at movie end that story and persons depicted are purely fictional
- Canon copies IPad style success story which are all real
- Eventually, since when can ads about a company be purely fictional? That's against all an ad is about and against all common sense.

Btw, The Falk thanked by Petapixel is me;)

Direct link | Posted on Oct 12, 2014 at 08:18 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

Catalin Stavaru: It seems that the Canon campaign had its desired effect. This article seems to have the largest number of comments in dpreview's history :)

That's true, it has really negatively impacted my sympathy for Canon. But so did Masaya Maeda when insisting Canon has or uses the best sensors available.
OTOH, there are things like dual pixel AF which may eventually shape the future of high end photography, once developed to its full potential. Canon wouldn't have needed this stunt.

Direct link | Posted on Oct 10, 2014 at 09:45 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)

I am actually emberassed that nobody here jumps on the real cover story hidden behind everybodies disappointment:

That Canon *FAKED* the indie film maker success story in their campaign, stealing the story and work of Fede Alvarez. Who actually used a Sony and already complained with Canon.

@DPR anybody?

Search for my comments further down here for details.

Direct link | Posted on Oct 9, 2014 at 13:46 UTC as 60th comment
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

falconeyes: BREAKING NEWS:

I think this update got lost further down in the comment replies: One of the 4 success stories, that of short movie "Panic Attack" by Fede Alvarez, was not shot on Canon but Sony!!!!

Now, Fede Alvarez complains to Canon on http://youtu.be/5_LFmQ6eH1I in the comments section.

Can it get worse? Sure, because At Canon We See Impossible ...

Seriously.
On youtube, it is easy enough to verify it is the same Fede Alvarez making the comment (youtube name fedalvar) who uploaded the multi million views movie Panic Attack. It's also the same robots Canon shows in the Ad which Fede shows and offers as 3D model for free download. So, Canon could obviously produce its ad video w/o ever contacting Fede. In other words, pure fiction.

Direct link | Posted on Oct 9, 2014 at 08:42 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

SDPharm: In the back room of Canon headquarters...

Wow, in two days we generated more than 1400 comments on our new marketing campaign on DPR alone. Great job, guys.

Sounds like the back room of Exxon headquarters ...

after the Valdez affair. Great job, captain.

Canon ImpossibleGate.

Direct link | Posted on Oct 9, 2014 at 02:57 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)

BREAKING NEWS:

I think this update got lost further down in the comment replies: One of the 4 success stories, that of short movie "Panic Attack" by Fede Alvarez, was not shot on Canon but Sony!!!!

Now, Fede Alvarez complains to Canon on http://youtu.be/5_LFmQ6eH1I in the comments section.

Can it get worse? Sure, because At Canon We See Impossible ...

Direct link | Posted on Oct 9, 2014 at 01:17 UTC as 78th comment | 4 replies
On Post-Photokina polls - Tell us what you think article (198 comments in total)
In reply to:

Average User: Maybe the question should be "What is the minimum sensor size you consider appropriate for the primary camera of an enthusiast?
Followed by what is the minimum sensor size you consider useable as a secondary device or for special situations for an enthusiast?
My answers are: APS-C for the first question, and "All of the above" for the second question.

@Richard Butler:

Since you ask, no, there are no primary and secondary images.

But there are images I cannot take with my primary camera (because I didn't bring it) and images I cannot take with my secondary camera (missing bokeh, too dark, too much action, too far away). And then there are images I cannot yet take at all. And then there are images where it doesn't matter at all. Therefore, the answer always is about a compromise.

So, in a world most if not all enthusiasts own two or more cameras, the compromise is a different one and the question needed be asked more specifically.

Esp. if one option reads "FF *or nothing*".

Direct link | Posted on Oct 8, 2014 at 14:23 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

biza43: I think that a message that aims to inspire and challenge people to boost their creativity in imaging, is lost amongst the techno nerds and equipment focused inhabitants of Dpreview...

Have people actually seen the work that is featured in the microsite? Quite inspiring, but that's me, I much prefer to see the work of other photographers and imagers, than discussing frustrations and blaming equipment for my failures...

I do not know what is going on at the executive level. Not with statements like the following (from the interview linked in the article):
Q: "So in your opinion your sensors are currently the best on the market?" A: "Yes"

Direct link | Posted on Oct 8, 2014 at 11:25 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

billorg: So what 3 NEW cameras are at the forefront of innovation right now - among all manufacturers?

NX1, LX100, A7s

Direct link | Posted on Oct 8, 2014 at 08:55 UTC
On 'See Impossible': Canon counts down to... something. article (1658 comments in total)
In reply to:

Donnie G: Is it possible that more DPR people have expressed a strong opinion about Canon's new marketing campaign today than have expressed any interest at all in a weeks worth of non-Canon product related Photokina news? Yeah Baby! This is how the big boys, (Apple, Canon, Google, H-P), generate buzz in the marketplace that gets people to constantly say their name over and over again while lesser players quietly wither and die.

@Donnie G,
like in "rather bad press than no press"?

Well, while true for a no name company, disaster press actually DAMAGES the value of a brand, even for Costco shoppers.

This is what has happened for Canon here: Damage. Average Joe may not have noticed the ad campaign, but the shop assistants consulting him probably did.

Like in "the last word of a sinking ship".

Direct link | Posted on Oct 8, 2014 at 08:50 UTC
Total: 330, showing: 41 – 60
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