From Bits To Lens
It is my understanding that the corrections made based on using a coded M lens vs a non coded lens are applied ONLY to OOC jpegs. Is this correct?-'Sick cultures show a complex of symptoms such as you have named.but a dying culture invariable exhibits personal rudeness. Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot.'
This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength.Friday, it is too late to save this culture-this worldwide culture. Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile.' Heinlein in 'Friday'. It is my understanding that the corrections made based on using a coded M lens vs a non coded lens are applied ONLY to OOC jpegs. Is this correct?-'Sick cultures show a complex of symptoms such as you have named.but a dying culture invariable exhibits personal rudeness. Lack of consideration for others in minor matters.
A loss of politeness, of gentle manners is more significant than a riot.' This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength.Friday, it is too late to save this culture-this worldwide culture. Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile.' Heinlein in 'Friday'I guess you mean when used with an M camera.
I am not 100% sure but I think that apart from the jpeg the info is also recorded in the raw file and then used by the raw converted as well.Best D. Tony field wrote:Some corrections are made at the RAW level for coded lenses. For example, adjusting for corner fall off. I understand that colour cast corrections for coded lenses are done as well. I also suspect that rectilinear corrections are made.Yes: The lens code applies corrections directly to the raw data as well as to the JPEGs in the M9, and (I presume) with the M8 series, the M-E and M Monochrom, and M typ 240 series bodies.I know they do color shading and corner corrections. It's less obvious whether rectilinear corrections are also applied since I don't have any modern Leica lenses with coding to test against definitively.G.
From Bits To The Lens Book
Since acquiring the Leica, I originally thought that the corrections were applied also to the raw files, although I had no uncoded lens with which to test. I recently went back to re read the review (sorta following my own advice to RTFM) on this site and encountered this comment:' Know which lens is being used and apply some software correction - all new M series lenses now carry which allows the M8 to identify which lens is used and (optionally) apply a 'final stage' software based vignetting correction (for RAW images the lens used is simply recorded, no change is made).' Highlighting is mine.This implies to me that the correction is not applied until the raw converter, which of course would need to have the correct lens profile installed. Meaning, I suppose, that the only information used from the raw file is the lens identification and the actual file changes are not made until the conversion, and then only using the profile information on vignetting, color issues, and whatever, not something that has already been changed in the raw file.This review quote seems to be contrary that I had originally thought and I hesitate to accept it as definitive. As this review was done very early on, it occurred to me that it might be in error. I can't find the quote immediately, but I also read in a review that the reverse is true.I have the profiles for my lenses in ACR and I suppose I need to do some experimentation with and without. I had not previously observed any obvious changes when applying the profiles, but I suppose that since I have nothing wider than 28mm I could be missing something subtle.
(Or perhaps not so subtle, I'm a peretty basic sort of guy ). 'Sick cultures show a complex of symptoms such as you have named.but a dying culture invariable exhibits personal rudeness.
Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot.' This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength.Friday, it is too late to save this culture-this worldwide culture. Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile.' Heinlein in 'Friday'.
Coronawithlime wrote:Since acquiring the Leica, I originally thought that the corrections were applied also to the raw files, although I had no uncoded lens with which to test. I recently went back to re read the review (sorta following my own advice to RTFM) on this site and encountered this comment:' Know which lens is being used and apply some software correction - all new M series lenses now carry which allows the M8 to identify which lens is used and (optionally) apply a 'final stage' software based vignetting correction (for RAW images the lens used is simply recorded, no change is made).' Highlighting is mine.Unfortunately, that's incorrect. Leica M digital lens codes do apply adjustments to the raw files.I process my raw files in Lightroom. Changing lens code assignments for the Color Skopar 28mm lens recently, there were marked differences between how Lightroom rendered the raw file. I can also see it if I process the files in dcraw, which most assuredly imposes no correction functions on the raw conversion.DPReview is not infallible.G. 'Sick cultures show a complex of symptoms such as you have named.but a dying culture invariable exhibits personal rudeness.
Lack of consideration for others in minor matters. A loss of politeness, of gentle manners is more significant than a riot.' This symptom is especially serious in that an individual displaying it never thinks of it as a sign of ill health but as proof of his/her strength.Friday, it is too late to save this culture-this worldwide culture. Therefore we must now prepare the monasteries for the coming Dark Age. Electronic records are too fragile.' Heinlein in 'Friday'.