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#701
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On 10/5/2014 2:51 PM, nospam wrote:
In article , PeterN wrote: I gaae him some common uses. He typically uses "edge case' to give him wriggle room. wrong again. what i call an edge case is an edge case and what you're calling common can be done *without* lab more easily and with better quality results. in other words, you're blaming others for your own lack of knowledge and unwillingness to learn. Well then explain with facts and detail. Warning. I have Dan's book and will use it as a reference. -- PeterN |
#702
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On 2014.10.05, 14:42 , PeterN wrote:
We went through all this some many months ago. I demonstrated clearly that the amount of 'loss' was negligible in practical terms. I would use the terem "color change." anstead of loss. Any change is a quality loss. Whether that is colour difference, tone, brightness, sharpness ... whatever, it's a loss. -- Among Broad Outlines, conception is far more pleasurable than “carrying [the children] to fruition.” Sadly, “there’s a high infant mortality rate among Broad Outlines—they often fall prey to Nonstarters.” "Bestiary of Intelligence Writing" - CIA |
#703
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On 10/5/2014 3:57 PM, Eric Stevens wrote:
On Sun, 05 Oct 2014 14:57:51 -0400, nospam wrote: In article , PeterN wrote: However, LAB is great for color changes that maintain subtle tonality. e.g channel swapping. you must be kidding. Why? -- PeterNBecause I posted it, and he would rther argue. |
#704
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On 10/5/2014 5:20 PM, nospam wrote:
In article , Eric Stevens wrote: However, LAB is great for color changes that maintain subtle tonality. e.g channel swapping. you must be kidding. Why? channel swapping is hardly subtle, *especially* in lab. Who said channel swapping was subtle. Do learn to read. -- PeterN |
#705
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On Sun, 05 Oct 2014 17:20:44 -0400, nospam
wrote: In article , Eric Stevens wrote: However, LAB is great for color changes that maintain subtle tonality. e.g channel swapping. you must be kidding. Why? channel swapping is hardly subtle, *especially* in lab. You must be very clumsy. -- Regards, Eric Stevens |
#706
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Is RGB to Lab lossy? - was( Lenses and sharpening)
On 10/5/2014 6:57 PM, Alan Browne wrote:
On 2014.10.05, 14:42 , PeterN wrote: We went through all this some many months ago. I demonstrated clearly that the amount of 'loss' was negligible in practical terms. I would use the terem "color change." anstead of loss. Any change is a quality loss. Whether that is colour difference, tone, brightness, sharpness ... whatever, it's a loss. Then you are using a different definition of quality. Certainly you are not saying one cannot have a change for the better. -- PeterN |
#707
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Is RGB to Lab lossy? - was( Lenses and sharpening)
In article , PeterN
wrote: However, LAB is great for color changes that maintain subtle tonality. e.g channel swapping. you must be kidding. Why? channel swapping is hardly subtle, *especially* in lab. Who said channel swapping was subtle. you did. |
#708
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Is RGB to Lab lossy? - was( Lenses and sharpening)
In article , Eric Stevens
wrote: However, LAB is great for color changes that maintain subtle tonality. e.g channel swapping. you must be kidding. Why? channel swapping is hardly subtle, *especially* in lab. You must be very clumsy. nope. |
#709
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Is RGB to Lab lossy? - was( Lenses and sharpening)
In article , PeterN
wrote: I gaae him some common uses. He typically uses "edge case' to give him wriggle room. wrong again. what i call an edge case is an edge case and what you're calling common can be done *without* lab more easily and with better quality results. in other words, you're blaming others for your own lack of knowledge and unwillingness to learn. Well then explain with facts and detail. Warning. I have Dan's book and will use it as a reference. that's your problem. dan is wrong and reading his books has led you astray. if you read other books, you'll see that they consistently prove just how much of an idiot dan really is. i've mentioned two such books in this thread and other books in other threads. |
#710
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Is RGB to Lab lossy? - was( Lenses and sharpening)
In article , PeterN
wrote: You have never noticed the ease of a color change in LAB, compared to making a similar color change in RGB. YOu have never brought out color using LAB that could not easily be brought out in RGB. nonsense. you just don't know how to do it in rgb. Well let's see a FACTUAL comparison. read the books i've already mentioned. you won't, because you only want to argue. |
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