Re: Pentax K3-iii Monochrome
Hi Mark, In response to your thoughts, here are the results of using the Leica M10 Monochrom to image an Xrite ColorChecker. Leica M10 Monochrom - ColorChecker to Grayscale :: https://flic.kr/p/2oudh5u Leica M10 Monochrom - Swatch Comparison :: https://flic.kr/p/2oufwVz As with using B film, you control spectral response in your captures (and the relationship between different colors in grayscale) by using B filtering, not with image post-processing. An interesting point is that the need to use B filtering to control tonal relationships between colors is nicely facilitated by the higher sensitivity of the monochrome sensor. I can't say about the Pentax K3-III Monochrome, but between the Leica M10-R and M10 Monochrom, both nominally 40 Mpixel FF sensors from the same sensor family, the difference in acutance and grayscale dynamic range is immediately apparent despite the similarity in size and type of the two sensors. Enjoy! G — No matter where you go, there you are. > On Apr 13, 2023, at 2:24 PM, Mark Roberts wrote: > > Steve Cottrell wrote: > >> https://www.dpreview.com/news/2780405465/ricoh-announces-pentax-k-3-iii-monochrome-dslr > > Looks interesting. I'll show it to my Digital Photography I class > tomorrow (coincidentally, "Black & White" was the assignment for this > week). It'll be interesting to see what they make of it and if there's > any interest (I won't mention the price because that alone will kill > any interest from students). > > My thoughts tend in two directions: > > The disadvantage is being unable to really control spectral response. > Since they've actually done away with the RGB filters over the pixels > you're stuck with the spectral response you're given (other than by > using traditional colored B filters): There'll be no adjusting the > response curve in post the way you can with RGB images. > > The advantages are, well first of all you *will* be able to use > traditional colored B filters (the results when they're put over RGB > sensors are weird). You'll also get higher sensitivity (no filters > over the pixels) and lower noise (and no chroma noise at all!) > Theoretically, you should also get finer detail, though with over 25 > megapixels crammed into an APS-C area I'm not sure how evident that > will be. I'll wait for real-life tests but I imagine you'll need the > highest resolution lenses to see much difference. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax K3-iii Monochrome
Hi Mark, In response to your thoughts, here are the results of using the Leica M10 Monochrom to image an Xrite ColorChecker. Leica M10 Monochrom - ColorChecker to Grayscale :: https://flic.kr/p/2oudh5u Leica M10 Monochrom - Swatch Comparison :: https://flic.kr/p/2oufwVz As with using B film, you control spectral response in your captures (and the relationship between different colors in grayscale) by using B filtering, not with image post-processing. An interesting point is that the need to use B filtering to control tonal relationships between colors is nicely facilitated by the higher sensitivity of the monochrome sensor. I can't say about the Pentax K3-III Monochrome, but between the Leica M10-R and M10 Monochrom, both nominally 40 Mpixel FF sensors from the same sensor family, the difference in acutance and grayscale dynamic range is immediately apparent despite the similarity in size and type of the two sensors. Enjoy! G — No matter where you go, there you are. > On Apr 13, 2023, at 2:24 PM, Mark Roberts wrote: > > Steve Cottrell wrote: > >> https://www.dpreview.com/news/2780405465/ricoh-announces-pentax-k-3-iii-monochrome-dslr > > Looks interesting. I'll show it to my Digital Photography I class > tomorrow (coincidentally, "Black & White" was the assignment for this > week). It'll be interesting to see what they make of it and if there's > any interest (I won't mention the price because that alone will kill > any interest from students). > > My thoughts tend in two directions: > > The disadvantage is being unable to really control spectral response. > Since they've actually done away with the RGB filters over the pixels > you're stuck with the spectral response you're given (other than by > using traditional colored B filters): There'll be no adjusting the > response curve in post the way you can with RGB images. > > The advantages are, well first of all you *will* be able to use > traditional colored B filters (the results when they're put over RGB > sensors are weird). You'll also get higher sensitivity (no filters > over the pixels) and lower noise (and no chroma noise at all!) > Theoretically, you should also get finer detail, though with over 25 > megapixels crammed into an APS-C area I'm not sure how evident that > will be. I'll wait for real-life tests but I imagine you'll need the > highest resolution lenses to see much difference. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
