If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#71
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
On Thu, 03 Jan 2019 18:53:29 -0500, nospam
wrote: In article , Eric Stevens wrote: think about what a stop means. Think about what a bit means. There is no reason why 1 bit = 1 stop, or vice versa. there is. If there is, you seem utterly unable to explain it. i did, as do numerous engineering text books. it's clear you aren't interested in learning anything. On the contrary, I am very interested in learning, then why do you argue with what people tell you, including snipping examples and explanations you claim to want to see? Just saying it again is neither teaching nor explaining. In any case I always mark my snips (unlike some I could mention). but you seem incapable of teaching. ad hominem. No more an ad hominem than saying that someone is incapable of swimming. stop blaming others for your own shortcomings and go learn something. Tell me where. Surely you can manage that? -- Regards, Eric Stevens |
#72
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
In article , Eric Stevens
wrote: If there is, you seem utterly unable to explain it. i did, as do numerous engineering text books. it's clear you aren't interested in learning anything. On the contrary, I am very interested in learning, then why do you argue with what people tell you, including snipping examples and explanations you claim to want to see? Just saying it again is neither teaching nor explaining. In any case I always mark my snips (unlike some I could mention). if you're referring to me, you'd be wrong. but you seem incapable of teaching. ad hominem. No more an ad hominem than saying that someone is incapable of swimming. false. stop blaming others for your own shortcomings and go learn something. Tell me where. Surely you can manage that? start with a class on signal theory, or perhaps a textbook, which i already mentioned. hopefully you will pay more attention there than you do here... |
#73
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
On Thu, 03 Jan 2019 23:53:24 -0500, nospam
wrote: In article , Eric Stevens wrote: If there is, you seem utterly unable to explain it. i did, as do numerous engineering text books. it's clear you aren't interested in learning anything. On the contrary, I am very interested in learning, then why do you argue with what people tell you, including snipping examples and explanations you claim to want to see? Just saying it again is neither teaching nor explaining. In any case I always mark my snips (unlike some I could mention). if you're referring to me, you'd be wrong. Haw! but you seem incapable of teaching. ad hominem. No more an ad hominem than saying that someone is incapable of swimming. false. You are overly sensitive. stop blaming others for your own shortcomings and go learn something. Tell me where. Surely you can manage that? start with a class on signal theory, or perhaps a textbook, which i already mentioned. A global search of the last six months of postings in this news group have failed to find any evidence that anyone has ever mentioned a textbook before you did in the message to which I am replying. hopefully you will pay more attention there than you do here... Hopefully I will find a real mention. -- Regards, Eric Stevens |
#74
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
On Thu, 03 Jan 2019 23:53:24 -0500, nospam
wrote: In article , Eric Stevens wrote: If there is, you seem utterly unable to explain it. i did, as do numerous engineering text books. it's clear you aren't interested in learning anything. On the contrary, I am very interested in learning, then why do you argue with what people tell you, including snipping examples and explanations you claim to want to see? Just saying it again is neither teaching nor explaining. In any case I always mark my snips (unlike some I could mention). if you're referring to me, you'd be wrong. but you seem incapable of teaching. ad hominem. No more an ad hominem than saying that someone is incapable of swimming. false. stop blaming others for your own shortcomings and go learn something. Tell me where. Surely you can manage that? start with a class on signal theory, or perhaps a textbook, which i already mentioned. hopefully you will pay more attention there than you do here... I suspect you are thinking about image compression. Am I right? -- Regards, Eric Stevens |
#75
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
In article , Eric Stevens
wrote: Tell me where. Surely you can manage that? start with a class on signal theory, or perhaps a textbook, which i already mentioned. A global search of the last six months of postings in this news group have failed to find any evidence that anyone has ever mentioned a textbook before you did in the message to which I am replying. a search of *this* thread, finds the following from *two* *days* *ago*: In article , nospam wrote: If there is, you seem utterly unable to explain it. i did, as do numerous engineering text books. it's clear you aren't interested in learning anything. you failed again. hopefully you will pay more attention there than you do here... Hopefully I will find a real mention. hopefully you will stop babbling, but the chances of that are very close to zero. |
#76
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
In article , Eric Stevens
wrote: stop blaming others for your own shortcomings and go learn something. Tell me where. Surely you can manage that? start with a class on signal theory, or perhaps a textbook, which i already mentioned. hopefully you will pay more attention there than you do here... I suspect you are thinking about image compression. Am I right? no. |
#77
|
|||
|
|||
Finally got to the point where no new camera holds my interest(waiting for specific offering)
On 2019-01-03 17:55, Eric Stevens wrote:
On Wed, 02 Jan 2019 19:19:36 -0500, nospam wrote: In article , Peter Irwin wrote: nope. it's *not* *possible* to resolve 37 stops with a 14 bit adc. How about an IRL wager to resolve this disagreement? I can offer Welch-proof terms. Nospam's statement as written is trivially true: x stops of resolution requires x bits. That is a fact of mathematics, yep but not a useful statement of what is needed for making images to be seen by humans. the issue was that dxo claimed that several cameras which have a 14 bit adc could produce nearly 15 stops of dynamic range. that's not possible. as i said before, an 14 bit adc limits the dynamic range to a theoretical maximum of 14 stops. You keep saying that but you never say why. Does he have to say "math"? IAC, 14 bits can't even give you a true 14 stops because of noise. More like 12.5, maybe 13 on a cold, cold, cold day (if the camera works). -- "2/3 of Donald Trump's wives were immigrants. Proof that we need immigrants to do jobs that most Americans wouldn't do." - unknown protester |
#78
|
|||
|
|||
Finally got to the point where no new camera holds my interest(waiting for specific offering)
On 2019-01-02 04:16, Eric Stevens wrote:
On Wed, 2 Jan 2019 07:48:13 +0000, RJH wrote: On 02/01/2019 01:38, nospam wrote: In article , Eric Stevens wrote: You are obviously wedded to 1 stop per bit. Why is that? math. Why for example can you not have 2 stops per bit, or pi stops per bit? As long as you scale the entire brightness range with the available 14 stops. because it doesn't work that way. think about what a stop means. FWIW, I don't follow the linearity - in fact I've often wondered why aperture, ISO and shutter speed aren't infinitely variable, especially with digital. This article takes me closer to understanding: https://expertphotography.com/understanding-fstops-stops-in-photography-exposure/ The author of that article is using 'stop' when he should be using 'exposure value'. But lets not get into that in this thread. It's confused enough already. :-) There is no difference at all between an EV and a stop of any of the three independent variables of ISO, exposure period and aperture. -- "2/3 of Donald Trump's wives were immigrants. Proof that we need immigrants to do jobs that most Americans wouldn't do." - unknown protester |
#79
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
In article , Alan Browne
wrote: as i said before, an 14 bit adc limits the dynamic range to a theoretical maximum of 14 stops. You keep saying that but you never say why. Does he have to say "math"? already did. IAC, 14 bits can't even give you a true 14 stops because of noise. More like 12.5, maybe 13 on a cold, cold, cold day (if the camera works). yep, which is why i said theoretical maximum. |
#80
|
|||
|
|||
Finally got to the point where no new camera holds my interest (waiting for specific offering)
Eric Stevens wrote:
You really should have linear encoding, but there is no reason why the encoded range should be anything in particular. If you have linear encoding you need twice as many numbers every time you add a stop (which doubles the range in linear terms). Doubling the numbers available in binary means using one more bit. Therefore in linear terms 1 bit = 1 stop. Peter. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Finally got to the point where no new camera holds my interest (waiting for specific offering) | Alfred Molon[_4_] | Digital Photography | 2 | December 24th 18 02:37 PM |
Please, tell me Zeiss's offering to the camera world won't be areskinned SONY!! | Neil[_9_] | Digital Photography | 1 | August 27th 18 01:00 PM |
Need a camera with specific features: | Gary Smiley | Digital Photography | 1 | May 22nd 06 02:31 AM |
Canon Offering $600+ Rebate on Digital Camera Equipment (3x Rebate Offers) | Mark | Digital Photography | 6 | November 4th 04 10:27 AM |